According to Au7o's analysis of 6,332+ owner reports, the 1994-2026 Jeep Grand Cherokee has 77 documented known issues, with 26 rated critical. The most serious are TIPM (Fuse Box) Failure ($800-$1,500 repair), 5.7L HEMI MDS Lifter Collapse and Camshaft Lobe Wear ("HEMI Tick") ($1,500-$7,000 repair), 3.0L EcoDiesel EGR Cooler Internal Crack Allowing Coolant Into Intake — Fire Risk (Recall 20V-699 / W79) ($0-$1,800 repair), Early 3.6L Pentastar Left Cylinder Head Valve Seat/Guide Wear Causing Misfires (Warranty Extension X56 / TSB 09-002-14) ($0-$2,500 repair), 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage ($500-$4,000 repair), 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick ($600-$3,500 repair), 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling. Across all issues, repair costs range from $20 to $12,000. at .
Chrysler (FCA US, LLC) is recalling certain 2021-2024 Jeep Wrangler and 2022-2024 Jeep Grand Cherokee vehicles. A hybrid control processor (HCP) software error may cause the defrosting and defogging system to be inoperative. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 103, "Windshield Defrosting and Defogging Systems."
Campaign #24V11100015/02/2024
EXTERIOR LIGHTING:HEADLIGHTS
Chrysler (FCA US, LLC) is recalling certain 2023-2024 Jeep Grand Cherokee and Jeep Grand Cherokee L vehicles. When the master headlight switch is set to the AUTO position, the driver may be unable to quickly activate the high beams. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Campaign #24V13000022/02/2024
STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM
Chrysler (FCA US, LLC) is recalling certain 2024 Jeep Grand Cherokee vehicles. An improperly machined steering knuckle may separate between the ball joint and knuckle, causing the wheel to fall outward and resulting in a loss of control.
Campaign #24V13100022/02/2024
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What are the most common Jeep Grand Cherokee problems?
According to Au7o's analysis of 6,332+ owner reports, the 1994-2026 Jeep Grand Cherokee has 77 documented issues. The most frequently reported are: TIPM (Fuse Box) Failure, 5.7L HEMI MDS Lifter Collapse and Camshaft Lobe Wear ("HEMI Tick"), 3.0L EcoDiesel EGR Cooler Internal Crack Allowing Coolant Into Intake — Fire Risk (Recall 20V-699 / W79). Of these, 26 are rated critical and should be addressed promptly.
Is the Jeep Grand Cherokee reliable?
The 1994-2026 Jeep Grand Cherokee has 77 known issues documented across 6,332+ owner reports. 26 issues are rated critical: TIPM (Fuse Box) Failure and 5.7L HEMI MDS Lifter Collapse and Camshaft Lobe Wear ("HEMI Tick") and 3.0L EcoDiesel EGR Cooler Internal Crack Allowing Coolant Into Intake — Fire Risk (Recall 20V-699 / W79) and Early 3.6L Pentastar Left Cylinder Head Valve Seat/Guide Wear Causing Misfires (Warranty Extension X56 / TSB 09-002-14) and 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage and 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick and 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling and Early 3.6L Pentastar Left Cylinder Head Failure — Overheated Valve Seat Causing Ticking, Misfire and Check Engine Light (Warranty Extension X56) and 4xe 2.0L Turbo Engine Sand-Casting Debris Causing Catastrophic Failure, Loss of Propulsion or Fire (Recall 25V766 / Campaign 78C) and Second-Row Seat Side Airbag Connector/Occupant Restraint Fault Warnings and Monostable Electronic Shifter Rollaway (Recall 16V-240) and Loss of Steering Control: Upper Control Arm Pinch Bolt & Intermediate Shaft (Recalls 23V-352, 24V-131) and Rear Coil Spring Separation/Collapse Causing Tire Contact and Loss of Stability and 4xe High-Voltage Battery Cell Separator Defect Causing Fire Risk While Parked or Driving (Recall 25V576 / Park-Outside Campaign) and Ignition Switch / Lock Cylinder Wear Causing Key Stuck and Unexpected Engine Shut-Off (Recall P41 / NHTSA 14V-438, 2005-2007 WK) and 3.0L EcoDiesel Bosch CP4 High-Pressure Fuel Pump Failure Sending Metal Debris Through Fuel System (Recall Z46) and Rear-Mounted Fuel Tank Rupture and Fire Risk in Rear Impacts (Recall 13V-252 / Campaign N45) and 4.0L Inline-6 Cylinder Head (Casting #0331) Cracks Between Cylinders #3 and #4 Causing Coolant Loss, Misfire and No Heat and Internal Radiator Transmission-Cooler Failure Cross-Contaminating ATF and Coolant ('Pink Milkshake') and Sudden Alternator Failure Causing Stall / Fire Risk (Recalls 14V-634, 17V-435) and 4xe High-Voltage Battery/Charging System Faults Triggering No-Start or Reduced Propulsion and 3.0L EcoDiesel DEF Tank/Heater/Pump Failure Triggering Limp Mode and No-Start Countdown and W5A580 (NAG1) 5-Speed Automatic Limp Mode and Harsh Shift from Conductor-Plate Speed Sensors and Fluid Contamination and Airbag Clockspring Failure Causing SRS Light, Inoperative Horn and Cruise/Steering-Wheel Controls and Front Differential / CV Axle Noise and Failure on Independent Front Suspension Models and Loss of Drive Power from Improperly Installed Intermediate Steering Shaft / Steering Coupling Hardware. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
Filter:
When Issues Typically Appear
Second-Row Seat Side Airbag Connector/Occupant Restraint Fault Warnings
0K-40K
Rear Coil Spring Separation/Collapse Causing Tire Contact and Loss of Stability
0K-30K
4xe High-Voltage Battery/Charging System Faults Triggering No-Start or Reduced Propulsion
0K-40K
Loss of Drive Power from Improperly Installed Intermediate Steering Shaft / Steering Coupling Hardware
0K-20K
Power Liftgate Opens or Closes Erratically / Fails to Latch
0K-50K
Front Brake Rotor Warping / Pulsation and Premature Brake Wear
20K-90K
Power Window Regulator Failure Causing Glass to Drop Into Door
50K-140K
Blend Door / HVAC Actuator Failure Causing No Heat, No A/C Control, or One-Side Temperature Mismatch
60K-150K
Exhaust Manifold Bolt Failure and Manifold Leak on 4.7L V8
70K-180K
Front Differential / CV Axle Noise and Failure on Independent Front Suspension Models
80K-180K
Water Pump Failure (3.6L Pentastar)
80K-120K
050K100K150K200K mi
On the 2011-2021 Jeep Grand Cherokee 5.7L HEMI V8, on the 5.7L HEMI, the Multi-Displacement System (MDS) cylinder-deactivation roller lifters can collapse or seize, which in turn wipes the corresponding camshaft lobe. This produces the persistent hot-idle 'HEMI tick.' Once a lifter fails it spreads metal debris through the engine; FCA's own guidance is to replace the cam and lifters if no debris is found, or replace the engine if debris reaches the VVT solenoid and cam.
Common Symptoms
Tapping or ticking noise at warm idle that may quiet under load
Misfire on a deactivated cylinder
Rough idle and reduced power
Check engine light with misfire/MDS codes
Metal flakes in the oil
How to Fix
Diagnose early with an oil analysis and cam/lifter inspection. Replace the failed MDS lifter(s), camshaft, and often all 16 lifters; many owners and shops also delete/disable MDS to prevent recurrence. If metallic debris is found in the VVT solenoid or oil, a long-block or full engine replacement is required. Use full-synthetic oil at correct viscosity and avoid extended drain intervals.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2014-2019 Jeep Grand Cherokee 3.0L EcoDiesel V6 (VM Motori A630), the EGR cooler on 3.0L EcoDiesel Grand Cherokees is susceptible to thermal fatigue and can crack internally over time. A cracked cooler introduces pre-heated, vaporized coolant into the EGR/intake system, where it can interact with hydrocarbons and air and ignite, producing combustion inside the intake manifold and, in worst cases, an engine-bay fire. FCA opened safety recall 20V-699 (dealer code W79) covering 34,334 model-year 2014-2019 Grand Cherokee EcoDiesel vehicles after identifying field reports and a confirmed intake-manifold fire. Owners typically first notice unexplained coolant loss and a heater that blows cold before any fire risk develops.
Common Symptoms
Unexplained loss of engine coolant with no visible external leak
Heater blows cold / poor cabin heat
White smoke from exhaust
Coolant/sweet smell or burning smell from engine bay
Check-engine light and EGR-related codes
How to Fix
Have the recall (NHTSA 20V-699 / FCA W79) performed: dealers replace the EGR cooler free of charge and inspect/replace the intake manifold as needed. If out of recall scope or repeat-failing, replace the EGR cooler with the updated Mopar unit (and many owners fit an upgraded/reinforced aftermarket cooler). Investigate any unexplained coolant loss or loss of cabin heat immediately on these engines rather than just topping off coolant.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2013 Jeep Grand Cherokee 3.6L Pentastar V6, early (2011-2013) 3.6L Pentastar engines have a defective left-bank cylinder head with excessive valve seat/guide wear, attributed to incompatible head materials. The wear causes leak-down and misfires concentrated on the left bank — cylinders 2, 4, and 6 — often with a ticking valvetrain noise. Chrysler never issued a safety recall but acknowledged the problem with TSB 09-002-14 and warranty extension X56, covering the left cylinder head for 10 years / 150,000 miles. Buyers are advised to confirm the left head is stamped 2062 (day 206 of 2012) or later, indicating the corrected casting.
Common Symptoms
Misfires on left bank (cylinders 2, 4, 6)
Ticking valvetrain noise
Rough idle and check-engine light
Loss of power / hesitation
Failed leak-down test on affected cylinders
How to Fix
Replace the affected (left) cylinder head with the updated revised-casting part, including new gaskets and hardware, per TSB 09-002-14. Verify warranty extension X56 coverage (10yr/150k) before paying out of pocket. Diagnose by pulling misfire codes on even-numbered (left-bank) cylinders and performing a leak-down/compression test; confirm the head casting date stamp on used/early engines.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2014-2020 Jeep Grand Cherokee 3.0L EcoDiesel V6 (VM Motori A630), the integrated engine oil cooler/oil-filter housing on the 3.0L EcoDiesel develops internal failures that let engine oil and coolant cross-contaminate — owners report 'milkshake' oil and oil in the coolant bottle. Casting debris left in the engine can become trapped in the cooler and, with vibration, wear holes through the cooler's thin metal. If the leak isn't caught early it leads to overheating, coolant in the oil destroying bearings, and in many documented cases catastrophic engine failure requiring a long block — repairs that have run owners well into five figures. Failures are widely reported starting around 100k-140k miles.
Common Symptoms
Milky/emulsified 'milkshake' engine oil
Oil found in the coolant reservoir or coolant in the oil
Unexplained coolant loss
Engine overheating
Low oil pressure or knocking after contamination
How to Fix
Replace the oil cooler/oil-filter housing assembly at the first sign of oil-coolant mixing; many EcoDiesel owners proactively fit an upgraded external oil cooler kit to eliminate the cross-contamination path. Flush the cooling and oil systems thoroughly after any contamination event, and inspect bearings/engine condition before returning to service. Address any coolant loss or emulsified oil immediately — continuing to drive risks a total-engine repair.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2018-2024 Jeep Grand Cherokee 3.6L Pentastar Upgrade V6 (eTorque), the updated/'Upgrade' 3.6L Pentastar V6 (used on later WK2 and the WL fifth-gen) suffers premature wear of the intake rocker-arm roller bearings and/or intake camshaft lobes, traced by TSB to a manufacturing issue. As the rocker bearing or cam lobe wears, the valve no longer opens fully, producing a distinct ticking noise and a misfire on the affected cylinder; if ignored the failing rocker can damage the camshaft. This is a separate failure from the early-2011-2013 left-head defect and from the 5.7 HEMI MDS lifter — it affects the V6 valvetrain across both generations.
Common Symptoms
Cylinder-specific misfire code
Ticking/tapping noise from the valvetrain
Rough idle, hesitation, check-engine light
Misfire that does not move when coil/plug is swapped
Reduced power
How to Fix
Diagnose a cylinder-specific misfire accompanied by a valvetrain tick with a scope/inspection of the intake rocker arms and camshaft lobes. Replace worn rocker arms and, where the cam lobe is scored, the camshaft, per the applicable Pentastar Upgrade TSB; address promptly to avoid camshaft and follow-on damage. Replace spark plug/coil first only to rule out the easy cause — a persistent misfire with a tick is valvetrain, not ignition.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 1999-2004 Jeep Grand Cherokee 4.7L V8 (PowerTech), the crankshaft position sensor (CKP) on the 4.7L (and 4.0L) Grand Cherokee commonly fails from heat-soak: it works when cold but its internal resistance rises when hot, so the PCM loses the crank signal and the engine won't restart until it cools 30-60 minutes, or it stalls randomly while driving. A cranks-but-no-start after a hot soak is the classic signature and a top WJ search.
Common Symptoms
Cranks but will not start when hot; restarts after cooling down
Random stalling while driving with immediate/eventual restart
Intermittent no-crank-signal
Tachometer drops to zero while stalling
How to Fix
Verify with a scan tool (loss of CKP signal / no RPM during crank) rather than parts-swapping. Replace with a quality sensor — Mopar crankshaft position sensor 56028666AB fits 1999-2004 4.7L (56028133-series is the CAMSHAFT sensor, do not confuse). Use OEM Mopar or premium NGK/NTK; cheap sensors frequently fail again. On some 4.7L applications the starter must be removed for access.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2013 Jeep Grand Cherokee 3.6L Pentastar V6, on early 3.6L Pentastar V6 engines, the LEFT cylinder head (cylinders 2-4-6) is prone to premature failure. Premature wear of the exhaust valve seats and guides (attributed to improper material/hardening) causes valve-seat recession, producing a tell-tale tick, misfires on the left bank and an illuminated check-engine light. Chrysler acknowledged the condition in TSB 09-002-14 and issued warranty extension X56 covering the left cylinder head for 10 years / 150,000 miles (per warranty bulletin D-14-12, June 2014); it was never a safety recall. A production fix (hardened valve guides/seats, revised left head casting, reman part RL141353AC / updated OEM casting) was phased in during summer 2012 (heads stamped 2062 = 206th day of 2012 or later are the fixed version), so the highest-risk population is 2011-2012 builds plus early-2012-build 2013 units. The dealer diagnostic per the TSB is a cylinder leak-down test, replacing the head at 25% or greater leakage. This is distinct from the documented water-pump, oil-pan-gasket and catalyst-code issues.
Common Symptoms
Engine ticking or tapping noise
Single or multiple-cylinder misfire, rough idle
Check engine light
Loss of power / hesitation
Failed compression or leak-down on a left-bank cylinder
How to Fix
Confirm the misfire is mechanical, not just a coil/plug, via compression or leak-down on the affected left-bank cylinder (TSB threshold: 25%+ leakage). The accepted repair is replacing the failed LEFT cylinder head with the revised casting (hardened valve guides/seats — reman RL141353AC or the updated OEM 'AD' casting), new head gasket and bolts, plus spark plugs and often coils. If the vehicle is within the X56 10-year/150,000-mile window, the dealer replaces the left head at no cost. Independents may rebuild/reseat a head, but the OE remedy is the redesigned head assembly.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2023-2025 Jeep Grand Cherokee 2.0L Turbo I4 PHEV (4xe), jeep recalled 36,840 Grand Cherokee 4xe units (plus 76,019 Wrangler 4xe) built with 2.0L turbo-four engines whose blocks were contaminated with sand during the casting process. A supplier failed to adequately clean engines after casting between June 2023 and March 2024, leaving abrasive debris inside. The debris can cause catastrophic internal engine failure resulting in a vehicle fire or an unexpected, unrecoverable loss of propulsion. As of October 2025 Stellantis was aware of 36 fires, 50 loss-of-propulsion field reports, 144 warranty claims, and 3 injuries linked to the defect. Drivers may hear engine knocking or see a warning light before failure.
Common Symptoms
engine knocking noise
check engine light
malfunction indicator light
sudden loss of power/propulsion
engine fire
How to Fix
If you hear a knocking noise from the engine or see a check-engine/malfunction light, stop driving and contact a dealer. The recall remedy (engine inspection/replacement as needed) was under development with interim notification letters mailed Dec 29, 2025; final-remedy letters follow when available. Check VIN status with the dealer or NHTSA. Repairs are free under recall.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 1999-2004 Jeep Grand Cherokee 4.0L I6 (PowerTech 242), the 4.0L cylinder head cast with number '0331' (used on 1999-2004 Grand Cherokees, and 2000-2001 Cherokee XJ) was redesigned with larger intake/exhaust ports but left the wall between the #3 and #4 valve springs too thin. Under thermal cycling the head cracks in that region, letting coolant weep internally. It is one of the most-searched WJ 4.0L failures. The revised 2002+ 'TUPY' Brazilian casting largely cured it, so a cracked 0331 is typically replaced with a TUPY-era or aftermarket head.
Common Symptoms
Unexplained coolant loss with no visible external leak
White exhaust smoke / sweet smell
Rough idle and misfire
No heat from vents / heater blows cold
Overheating or fluctuating temp gauge
Coolant in oil or combustion gas in coolant
How to Fix
Confirm the crack by pulling the valve cover and inspecting between the #3/#4 valve springs; check for unexplained coolant loss and combustion gases in coolant (block test). Repair = replace the cylinder head with a non-cracking casting (revised Mopar TUPY head, or a new aftermarket head from Clearwater/ATK/Enginetech) plus a new head gasket set and Torch-To-Yield head bolt set (Crown/Mopar head bolt set for 1993-2004 4.0L). A welded 0331 repair rarely holds. Because the exact original OEM 0331 replacement head PN is superseded/discontinued, no confident single OEM PN is given here; source the revised-casting or aftermarket head by application.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 1999-2009 Jeep Grand Cherokee, the 4.7L V8 used in Grand Cherokee models is widely reported to develop broken exhaust manifold bolts or warped manifold sealing surfaces, especially after repeated heat cycles. Owners typically notice a ticking noise on cold start that may quiet as the engine warms, sometimes mistaken for valvetrain noise. Left unrepaired, the leak can worsen and may contribute to exhaust odor or failed emissions inspection.
Common Symptoms
Ticking noise on cold start
Exhaust smell in engine bay
Soot near exhaust manifold
Noise decreases as engine warms
Possible emissions test failure
How to Fix
Confirm the leak with a cold-start inspection, listening near the manifold and checking for soot around the flange and broken fasteners. Repair usually involves extracting broken studs/bolts, resurfacing or replacing the manifold if warped, and installing new hardware and gaskets. Penetrating oil, heat, and careful extraction are often required because broken fasteners in the cylinder head are common.
Owner tips & cautions
TipOwners recommend replacing all manifold hardware on the affected side once one bolt breaks, rather than only the visibly failed fastener.
TipA smoke test or cold-start stethoscope check helps distinguish manifold leaks from injector or valvetrain noise.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2011-2020 Jeep Grand Cherokee 3.6L Pentastar V6, the 3.6L Pentastar's oil filter housing / oil cooler assembly sits in the valley between the cylinder heads and is originally made of plastic, which warps and cracks after repeated heat cycling. It commonly weeps oil and/or coolant, with leaking oil often misdiagnosed as a rear main seal leak because it drips down the back of the block. If oil and coolant cross-contaminate, it can damage both systems; severe oil loss risks starvation.
Common Symptoms
Oil pooling on top of the engine and dripping down the rear of the block
Coolant loss with no obvious external puddle
Burning oil smell after driving
Low oil and/or low coolant warnings
Oil and coolant mixing (milky residue) in severe cases
How to Fix
Replace the plastic oil cooler/filter housing assembly with an updated aluminum-housing unit and new gaskets/O-rings, then top off oil and coolant. Avoid over-tightening the oil filter cap (snug plus ~1/8 turn) since over-tightening is a frequent trigger. Inspect coolant for oil contamination and flush if mixed.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2023 Jeep Grand Cherokee, wK2 (and 5th-gen WL) Grand Cherokees use hydraulic fluid-filled engine mounts. The mounts commonly fail — the internal fluid leaks out (visible reddish-brown residue on the subframe) and the rubber degrades — producing a pronounced vibration felt through the steering wheel, seat, and floor at idle in gear, plus a clunk on acceleration or gear engagement. It is especially prevalent on the 3.6L Pentastar left/front mount, and forums note 2021-2022 units failing repeatedly; a service bulletin exists for the mounts. It is frequently confused with driveline vibration, so both should be checked together.
Common Symptoms
Heavy vibration at idle, worse in Drive/Reverse at a stop
Clunk/thump on acceleration or shifting into gear
Reddish-brown fluid residue on the subframe under the engine
Vibration through steering wheel and floor
Engine 'settling' movement felt in cabin
Repeat failures on newer model years
How to Fix
Inspect the engine mounts for fluid weepage and separated rubber; wet/leaking hydraulic mounts should be replaced (replace in pairs on higher-mileage trucks and inspect the transmission mount at the same time). Use OEM Mopar hydraulic mounts rather than solid rubber aftermarket units, which reintroduce vibration. Re-verify idle smoothness in gear after replacement and confirm the driveshaft/mounts aren't jointly contributing.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2017 Jeep Grand Cherokee 3.6L Pentastar V6, many 3.6L Pentastar Grand Cherokees burn oil between changes — owners report being a quart low in as little as ~500-4,000 miles — without obvious external leaks or smoke. A primary contributor is the PCV system: the integrated PCV valve gums up and stops metering crankcase flow correctly, so oil droplets are pulled into the intake and burned, which also worsens the Pentastar's intake-side carbon and can aggravate the valvetrain tick. The PCV valve on this engine is widely advised to be serviced around every ~30k miles rather than left until 100k.
Common Symptoms
Low oil level between changes with no visible leak
Needing to add a quart well before the next oil change
Light blue smoke under load/cold start
Oil residue in intake/throttle body
Occasional misfire or rough idle from fouling
How to Fix
Replace the PCV valve with the updated Mopar design (note the revised valve and matching hose) and verify the PCV hose/orientation; check oil-consumption with a documented consumption test if it persists. Some owners add an oil catch-can to keep oil out of the intake and clean the intake/valves of carbon. Rule out worn rings only after PCV service and a consumption test, since the PCV path is the most common cause.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2023 Jeep Grand Cherokee 3.6L Pentastar V6, the 3.6L Pentastar's oil filter housing is an integrated plastic oil-cooler assembly that mounts in the valley under the intake manifold. The plastic warps and becomes brittle from repeated heat cycling — expanding and contracting at a different rate than the aluminum engine — so the gaskets can no longer seal, and the housing can crack (even from over-tightening the oil filter cap). Because the assembly also routes engine coolant through its integrated oil cooler, failures produce oil leaks, coolant loss, and in worse cases oil-and-coolant intermixing. Owners typically first notice oil pooling in the valley/rear of the engine and/or unexplained low coolant. This is one of the most common Pentastar shop repairs; Chrysler discontinued the plastic assembly but never issued a recall. It is a different failure and location from the oil-pan-gasket/oil-pressure-sensor leak, and affects a wide 2011-2023 Pentastar population across WK2 and WL Grand Cherokees.
Common Symptoms
Oil pooling at rear/valley/passenger side of engine
Burning oil smell from engine bay
Unexplained low coolant / coolant loss
Oil and coolant intermixing (milky oil or oily coolant) in severe cases
Visible oil residue around the oil filter cap/housing
How to Fix
Replace the failed oil filter housing/oil-cooler assembly. The durable accepted fix is an upgraded all-aluminum housing (e.g., Dorman 926-959, earlier 926-876) rather than the failure-prone plastic OE part, with new housing/cooler gaskets and O-rings and fresh oil/coolant. If oil-coolant intermixing occurred, flush the cooling system and change oil. Because the housing sits under the intake manifold, replacement includes intake removal, so shops often do the intake gasket, spark plugs, and a coolant flush at the same time. Housing-only labor+part runs roughly $400-$900, rising with the added items.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2022 Jeep Grand Cherokee, the amber lightning-bolt-in-parentheses 'Electronic Throttle Control' (ETC) warning is one of the most frequently reported faults on Pentastar-era Grand Cherokees. A contaminated or worn electronic throttle body, a failing throttle position sensor, or a corroded throttle-body connector causes the PCM to drop the engine into a reduced-power 'limp' state, with sudden loss of acceleration, surging, rough idle, or stalling. Owners frequently report the light clearing temporarily after a restart, then returning. Some cases are actually triggered by an out-of-range oil-temperature sensor or a stuck thermostat rather than the throttle body itself, so diagnosis before parts replacement is important.
Common Symptoms
Electronic Throttle Control warning light (lightning bolt in parentheses)
Sudden loss of power / reduced-power limp mode
Rough or surging idle
Hesitation or sluggish acceleration
Occasional stall or hard start
Light clears after restart then returns
How to Fix
Scan for codes and inspect/clean the throttle body and connector first; a throttle-relearn (idle-relearn) is required after cleaning or replacement. If the throttle position sensor or motor reads out of range, replace the electronic throttle body (Mopar) and perform the relearn. Check for applicable PCM software updates. Rule out the oil-temperature sensor and thermostat, which can mimic ETC faults. Cleaning resolves many early cases; persistent faults need throttle-body replacement.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
Community reported
750 owners
On the 2011-2021 Jeep Grand Cherokee, hEMI-equipped Grand Cherokees can develop the characteristic MDS lifter tick. This ticking noise is most noticeable at idle and during light throttle. While often not immediately harmful, it indicates lifter wear from the MDS cylinder deactivation system.
Common Symptoms
Ticking noise at idle
Tick follows engine RPM
Noise from top of engine
Tick more pronounced when warm
Noise comes and goes
How to Fix
Use quality synthetic oil meeting Chrysler MS-6395 spec. Consider MDS delete kit for permanent solution. Some owners have replaced lifters and camshaft under extended warranty. Regular oil changes help minimize tick progression.
Owner tips & cautions
TipRegular oil changes help minimize tick progression.
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
High Confidence750 reportsLast reported by owners Feb 2024Reviewed Feb 2026
On the 2011-2021 Jeep Grand Cherokee 3.6L Pentastar V6, the 3.6L Pentastar uses a two-piece (upper and lower) oil pan, and the upper oil-pan gasket commonly seeps oil down the back of the engine in a pattern that mimics a rear main seal leak. Separately, the engine oil-pressure sensor located in the valley beneath the intake manifold is a frequent leak point. Owners (and even shops) repeatedly misdiagnose these as rear main seal failures, with some reporting multiple needless rear-seal jobs before the upper oil pan gasket or pressure sensor is found to be the true source.
Common Symptoms
Oil drips/spots under the vehicle
Oil film down the rear/back of the engine
Burning-oil smell from drips on exhaust
Oil-pressure warning if the pressure sensor leaks/fails
Low oil level between changes
How to Fix
Clean the area and use UV dye to pinpoint the source before disassembly. For an upper oil-pan gasket leak, replace the upper pan gasket (significant labor). For an oil-pressure sensor leak, replace the sensor under the intake manifold. Rule out the oil cooler/filter housing (a separate known leak) so the correct part is fixed the first time.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 1994-2004 Jeep Grand Cherokee 4.0L I6 (PowerTech 242), the 4.0L inline-six routes oil through an aluminum oil-filter adapter housing bolted to the block; its O-rings harden and leak with age, dripping oil down the rear/side of the block. Because the oil migrates rearward, it is very commonly misdiagnosed as a rear main seal or oil-pan leak. One of the most frequent 4.0L oil-leak searches for ZJ/WJ owners.
Common Symptoms
Oil leak/drip on the passenger side and rear of the block
Oil smell and spots under the vehicle
Oil on the oil filter and adapter area
Gradual oil-level drop with no smoke
How to Fix
Replace the oil-filter adapter O-ring kit — Crown Automotive / Mopar 4720363 (a 3-O-ring kit, adapter retained by a T60 Torx bolt). Clean the mating surface first. A popular permanent alternative deletes the adapter housing and runs a shorter PH3614-style filter directly. Confirm the source with the housing area cleaned and dye if needed before condemning the rear main.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
Community reported
1,892 owners
On the 2011-2017 Jeep Grand Cherokee, the Totally Integrated Power Module (TIPM) can fail, causing various electrical issues including fuel pump relay problems (no start), random horn honking, and erratic behavior of lights and accessories.
For fuel pump relay failure: Install an external bypass relay kit ($30-50 DIY) to power fuel pump directly. For complete fix: Replace TIPM unit with remanufactured unit ($400-600) or new OEM ($800-1,200). Some electrical shops can repair/rebuild existing TIPM for $200-400.
Owner tips & cautions
WarningThis is a high-severity issue - ignoring it can lead to costly repairs or safety concerns. Address it promptly.
TipConsider OEM parts for critical components like sensors and electrical parts - aftermarket can be unreliable
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
High ConfidenceVerified1,892 reportsLast reported by owners Jan 2024Reviewed Feb 2026
On the 2022-2026 Jeep Grand Cherokee 2.0L Turbo I4 PHEV (4xe), stellantis recalled an estimated 320,065 Jeep 4xe plug-in hybrids — covering 2022-2026 Grand Cherokee 4xe (and 2020-2025 Wrangler 4xe) — because the high-voltage lithium-ion battery pack may contain cells with internal separator damage. Combined with other internal chemical/thermal interactions, the damaged separator can cause the pack to short-circuit and ignite. Because the fire can occur whether the vehicle is parked, charging, or being driven, owners were advised not to recharge and to park outdoors away from structures and other vehicles until repaired. This is the most serious documented defect on the 5th-gen (WL) 4xe and is separate from the software loss-of-propulsion campaigns.
Common Symptoms
smoke or fire from underbody/battery while parked or charging
burning smell
high-voltage battery warning
vehicle catches fire while driving
How to Fix
Do not charge the vehicle and park it outside, away from buildings and other vehicles, until the recall remedy is performed. Take the vehicle to a Jeep dealer for the recall (battery pack diagnosis/replacement of affected cells/modules) at no charge. Owners can check VIN status at the NHTSA recall site or Mopar's owner site, or call FCA US customer service.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2005-2007 Jeep Grand Cherokee, on 2005-2007 (WK) Grand Cherokees, wear inside the ignition switch/lock cylinder can allow the key to be jarred out of the RUN position — by a knee, a heavy key ring, or a rough road — which shuts off the engine and can disable power steering, power brake assist, and the airbags while driving. Owners also report the key sticking, being hard to turn, or not returning the fob to a working state. FCA issued Safety Recall P41 (NHTSA campaign 14V-438) covering the affected Grand Cherokees; the remedy replaces the ignition switch and lock cylinder assembly. This is a genuine safety defect (unintended stall / loss of assist) rather than a mere inconvenience.
Common Symptoms
Engine unexpectedly shuts off while driving
Key can rotate out of RUN with a bump or heavy key ring
Key sticks or is hard to turn in the ignition
Loss of power steering / brake assist after stall
Warning lights or accessories cutting out
Difficulty restarting after the key backs out
How to Fix
Verify the VIN against Safety Recall P41 / NHTSA 14V-438 at a Jeep dealer — the ignition switch and lock cylinder replacement is performed free of charge under the recall. Out of warranty or for non-recalled sticking-key complaints, replace the ignition switch/lock cylinder assembly and inspect the wiring/connector. Interim mitigation: remove heavy items from the key ring so nothing loads the key downward until the repair is done.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2014 Jeep Grand Cherokee, grand Cherokees with electro-hydraulic power steering subject the alternator to cyclical electrical loads that cause thermal failure of the internal diodes. The alternator can fail suddenly, stalling the vehicle without warning and, in some cases, short-circuiting and causing an under-hood fire. Multiple NHTSA campaigns cover the 160/180/220-amp units.
Common Symptoms
Sudden engine stall while driving
Battery / charging warning light
Dimming or flickering lights and dash warnings
No-start or repeated dead battery
Burning electrical smell from under the hood
How to Fix
Have the applicable recall performed (NHTSA 14V-634 for 160-amp 3.6L units, and 17V-435 for EHPS-equipped 5.7L/3.6L vehicles): dealers inspect and replace the alternator free of charge. Out of warranty, replace the alternator with an updated unit; budget roughly $400-$700 including labor.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2022-2025 Jeep Grand Cherokee 2.0L turbo plug-in hybrid, grand Cherokee 4xe models have generated substantial owner complaints for hybrid system warnings, charging faults, propulsion loss, and no-start conditions tied to the high-voltage battery pack, battery coolant heater, or related control logic. Several recalls and service actions have addressed fire risk, battery pack concerns, and software behavior in 4xe vehicles. Owners commonly describe a check engine light with 'service charging system' or 'service hybrid electric vehicle system' messages, sometimes leaving the vehicle unable to charge or drive normally.
Common Symptoms
service hybrid electric vehicle system message
service charging system message
vehicle will not charge
reduced power or limp mode
check engine light on
no-start condition
How to Fix
Diagnose with a scan tool capable of reading hybrid control modules, then inspect for active recalls, battery pack faults, coolant heater issues, and software updates. Repairs range from module reprogramming and battery coolant heater replacement to high-voltage battery pack replacement depending on the fault path. Because of the high-voltage system and fire-related campaigns, dealer-level diagnosis is strongly recommended.
Owner tips & cautions
TipBefore troubleshooting, check VIN-specific open recalls and software campaigns; many 4xe complaints are tied to updates or battery-related safety actions.
TipOwners recommend documenting charge level, ambient temperature, and whether Level 1 or Level 2 charging was used when faults occur, since intermittent charging issues can be pattern-dependent.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
Community reported
520 owners
On the 2011-2020 Jeep Grand Cherokee, the alternator can fail prematurely, causing charging system issues. Symptoms include the battery warning light, dim lights, and eventually a no-start condition. The alternator works hard to support the Grand Cherokee's many electrical systems.
Common Symptoms
Battery warning light on
Dim headlights and interior lights
Electrical accessories not working properly
Dead battery
Whining noise from engine bay
How to Fix
Replace alternator with OEM or quality aftermarket unit. Test battery condition as it may be damaged from undercharging. Check for excessive parasitic draw that could be overworking alternator. Higher-output alternator available for vehicles with added accessories.
Owner tips & cautions
TipConsider OEM parts for critical components like sensors and electrical parts - aftermarket can be unreliable
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
TipSearch Jeep Grand Cherokee forums and owner groups for real-world experiences and DIY guides
TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
High Confidence520 reportsLast reported by owners Feb 2024Reviewed Feb 2026
On the 2021-2023 Jeep Grand Cherokee, chrysler recalled 2022-2023 Grand Cherokee, 2021-2023 Grand Cherokee L (plus 2022-2024 Wagoneer/Grand Wagoneer) because the Central Vision Park Assist Module (CVPAM) software can prevent the rearview image from displaying when the vehicle is shifted into reverse — a non-compliance with FMVSS 111 'Rear Visibility' that raises backover-crash risk. A separate small recall covered a handful of units with an improperly connected coaxial camera cable. Owners of 5th-gen WL vehicles continue to report blank/black backup-camera screens and frozen displays tied to radio/module software, with additional camera-related recalls issued through 2024.
Common Symptoms
black or blank screen when shifting to reverse
no backup camera image
frozen rearview camera display
park-assist/camera fault
How to Fix
Have the dealer perform the recall software update to the Central Vision Park Assist Module (and verify the camera coaxial cable connection if applicable) at no charge. If the camera screen is black or frozen, a Uconnect/radio software update or module reset is often the fix. Check VIN recall status via NHTSA before assuming an out-of-warranty repair.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2022-2026 Jeep Grand Cherokee, owners of 2022-2026 Grand Cherokee and Grand Cherokee L (WL) report severe parasitic battery drain: control modules (infotainment/radio, keyless entry, body modules) fail to enter sleep mode after the vehicle is shut off, rapidly draining the 12V battery. Some report a completely dead battery after the vehicle sits just 7-10 days, with repeated jump-starts and premature battery replacements early in the vehicle's life. The condition can disable safety and convenience features and has prompted a class-action investigation. Chrysler has acknowledged related concerns through TSBs addressing excessive module wake cycles and radio/infotainment-related drain.
Common Symptoms
dead battery after sitting a few days
no-start / clicking
repeated jump-starts
warning messages on restart
premature battery replacement
How to Fix
Have the dealer perform an ignition-off-draw (IOD) parasitic draw test to isolate the offending module, and apply the latest software/TSB updates (e.g., bulletins addressing radio/infotainment module wake cycles). Updating control-module software often reduces the drain. A battery test/replacement may be needed if the original was repeatedly deep-cycled. A battery maintainer helps if the vehicle sits for extended periods.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2014-2018 Jeep Grand Cherokee, beyond the well-known Uconnect screen delamination, WK2 Grand Cherokees suffer a cluster of electrical gremlins traced to the Body Control Module (BCM), loose grounds, and the power-distribution center: the Uconnect head unit randomly reboots or goes black, accessories misbehave, lost-communication codes set, and a parasitic drain can leave the battery dead. Random Uconnect reboots frequently coincide with battery/charging problems, and an internally failing BCM is a documented root cause for these symptoms. A dealer software update fixes some cases, but module/ground/wiring repair is needed for others.
Common Symptoms
Uconnect screen randomly reboots or goes black
Intermittent dead/erratic accessories
Dead battery / slow crank from parasitic drain
Warning lights flicker or appear randomly
Lost-communication (U-code) faults
How to Fix
Start with the latest Uconnect/BCM software update and a thorough check of the main grounds and the power-distribution center connections. Test for parasitic draw and lost-communication codes (e.g., U0140 lost comms with BCM); if the BCM tests faulty internally, replace and reprogram it. A negative-terminal reset can clear transient glitches but will not fix a failed module or bad ground.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 1999-2004 Jeep Grand Cherokee, the WJ PCM (engine computer) can develop internal faults — often heat/temperature-related micro-cracks or solder failures — that cause intermittent stalling, hard-to-diagnose no-starts and driveability problems that come and go with ambient temperature. A well-known WJ case: a 2000 4.7L stalled only when outside air exceeded ~60F; a rebuilt/replaced PCM cured it after many other parts were replaced in vain.
Common Symptoms
Intermittent stalling, often correlated with heat/warm weather
Crank but no-start that comes and goes
Multiple unrelated sensor codes
Driveability that improves when cold
Repairs of individual sensors don't resolve it
How to Fix
Diagnose by elimination after CKP, fuel pump, and grounds are ruled out. Options: send the PCM for bench repair (specialists like Circuit Board Medics), or install a remanufactured PCM programmed to the vehicle's VIN and SKIM/immobilizer. Any replacement PCM must be VIN-programmed to run. Inspect PCM connectors/pins for corrosion first.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 1999-2004 Jeep Grand Cherokee, the WJ-generation Grand Cherokee instrument cluster is a well-known weak point. Owners report gauges that suddenly stop working, read erratically, or dim so far they're unreadable even with the dash brightness turned all the way up. Causes range from loose/corroded cluster connectors and cold-solder joints to electroluminescent backlight aging and Body Control Module (TIPM) interaction. The condition is often intermittent at first (a firm tap on the dash or an odometer-reset press temporarily restores the gauges) before becoming permanent.
Common Symptoms
Speedometer/tach/gauges suddenly quit or read erratically
Gauge and odometer backlight too dim to read
Intermittent operation restored by tapping dash or pressing odometer reset
Multiple gauges failing together
How to Fix
Remove the cluster and reseat/clean the connectors with contact cleaner; resecure loose plugs. Repair cold-solder joints on the cluster circuit board or replace the cluster (2002-2004 electroluminescent clusters can be retrofitted into 1999-2001 cars). Verify BCM/grounds if multiple unrelated gauges drop together. Re-check connector retention after reinstall.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
Community reported
820 owners
On the 2014-2021 Jeep Grand Cherokee, the Uconnect touchscreen display can develop issues including delamination (bubbling/peeling of the touchscreen layers), unresponsive touch areas, and complete screen failure. Heat exposure accelerates these issues.
Common Symptoms
Bubbling or peeling on touchscreen
Touch not registering in certain areas
Screen going black
Ghost touches (phantom inputs)
Display flickering
How to Fix
Screen replacement required for physical damage or delamination. Software issues may be resolved with updates. Some owners have had screens replaced under extended warranty. Third-party screen replacements available at lower cost than dealer.
Owner tips & cautions
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
TipSearch Jeep Grand Cherokee forums and owner groups for real-world experiences and DIY guides
TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
High Confidence820 reportsLast reported by owners Feb 2024Reviewed Feb 2026
On the 2014-2021 Jeep Grand Cherokee, stop-Start-equipped WK2 Grand Cherokees use a small secondary (auxiliary) AGM battery in addition to the main battery to power electronics during the engine auto-restart. This auxiliary battery (and sometimes the main AGM) fails relatively early, producing 'Stop/Start not available - battery charging' or 'Stop/Start Not Ready' messages and disabling the auto start-stop feature. Installing a non-AGM wet-cell battery causes premature failure because it cannot handle the cycling load. The Intelligent Battery Sensor (IBS) can also need a relearn after any battery replacement, during which ESS is temporarily inhibited.
Common Symptoms
'Stop/Start not available - battery charging' message
'Stop/Start Not Ready' / feature disabled
Intermittent ESS operation that quits after a few stops
Possible slow crank or electrical glitches
How to Fix
Test both the main and auxiliary batteries; replace the failed unit with the correct AGM specification (the auxiliary is a small dedicated battery, often near the air-box/fender). After replacement allow the IBS relearn to complete (several drive cycles). Never substitute a standard flooded battery. Verify charging-system output if messages persist.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2021 Jeep Grand Cherokee, grand Cherokees equipped with factory HID/xenon projector headlights are commonly reported for dim or color-shifted low beams as the bulbs age, single-side bulb or ballast failures, and internal lens condensation. Per Chrysler service guidance, some condensation inside vented HID housings is considered normal and should clear as the bulbs heat up; however, persistent moisture from a failed lens-to-housing seal can corrode reflective surfaces and shorten bulb life. Older assemblies also haze/yellow, further reducing output.
Common Symptoms
Dim or yellowed low-beam output
One headlight out or flickering (bulb/ballast)
Fog/condensation inside the headlight lens
High beam not activating on one side
Hazed/yellowed lens reducing brightness
How to Fix
For dim/aged output replace the HID bulbs (and ballast if a bulb fails to strike); match bulbs in pairs for even color. For mechanical high/low projector faults inspect the projector shutter solenoid. If condensation does not clear after running the lights, replace the headlight assembly due to a failed seal. Restore hazed lenses or replace assemblies as needed.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2022-2024 Jeep Grand Cherokee, owners of WL-generation Grand Cherokee models have reported persistent airbag warning lights and restraint system messages tied to seat wiring/connectors, especially around second-row or seat-mounted side airbag circuits. FCA also issued safety actions/TSB guidance on certain restraint-related faults in this generation. The practical problem is that the SRS may be disabled or operate improperly until the connector, harness, or module issue is corrected.
Common Symptoms
airbag warning light on
service airbag system message
restraint system warning chime
intermittent warning after moving seats
warning returns after clearing codes
How to Fix
Scan the Occupant Restraint Controller for stored codes, then inspect under-seat connectors, terminal tension, harness routing, and any signs of pin drag or intermittent contact. Repairs typically involve connector replacement, terminal repair, harness retention updates, or module/software updates depending on the exact fault. Clearing the light without fixing the root cause usually results in repeat warnings.
Owner tips & cautions
TipOwners often suggest documenting exactly when the warning appears, especially after seat movement or folding the second row, to help isolate an intermittent connector issue.
TipAvoid probing SRS connectors with generic test lights; use proper scan diagnostics and battery disconnect procedures before any seat harness inspection.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2014-2015 Jeep Grand Cherokee, the 2014-2015 Grand Cherokee uses a ZF monostable electronic 'E-shift' gear selector that always returns to a center position regardless of selected gear, giving poor tactile/visual feedback. NHTSA tied it to over 300 rollaway incidents and 117 crashes after drivers believed they had shifted into Park but had not. FCA recalled 811,586 vehicles (including 2012-2014 Charger/300 with the same shifter) and added Auto Park software.
Common Symptoms
Vehicle rolls away after the driver believes it is in Park
Difficulty telling which gear is selected from the shifter position
Shifter returns to center after each gear change
Engine left running after exit because shift to Park was not registered
How to Fix
Have the recall (NHTSA 16V-240) performed: dealers install software that automatically applies Park when the driver's door opens with the engine running and the seatbelt unbuckled. The shifter was redesigned to a conventional pattern from MY2016. Until the fix, always confirm the 'P' indicator and set the parking brake before exiting.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 1994-2004 Jeep Grand Cherokee, for the ZJ (1993-1998) and WJ (1999-2004) Grand Cherokee, Chrysler mounted the plastic fuel tank behind the rear axle with little rear-structure protection. NHTSA and the Center for Auto Safety documented that these vehicles were far more likely to suffer a fatal post-crash fire in rear impacts. Recall 13V-252 (issued June 19, 2013) covered ~1.56 million 1993-2004 Grand Cherokee and 2002-2007 Liberty vehicles. This is one of the most-searched safety topics for older Grand Cherokees.
Common Symptoms
Fuel tank located behind the rear axle with minimal shielding
Elevated fire risk in rear-end collisions
Recall remedy (rear reinforcement hitch) not yet installed
How to Fix
Recall remedy (Campaign N45, free at Jeep dealers) installs a factory Mopar trailer-hitch/rear-structure reinforcement that shields the tank in low-to-moderate rear impacts. Owners should verify the recall was completed via VIN at NHTSA/the dealer; if not, have the hitch installed. Note critics consider the fix only a partial mitigation — the tank position is unchanged.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 1999-2010 Jeep Grand Cherokee, the steering-column clockspring (a coiled ribbon cable that maintains electrical contact to the rotating steering wheel) is a common Grand Cherokee failure. As the ribbon cable fatigues and breaks from repeated steering motion, it simultaneously knocks out the driver's airbag circuit, the horn, and the steering-wheel-mounted controls (cruise control, audio/phone buttons). The illuminated airbag/SRS warning light combined with a dead horn and non-working cruise control is the classic symptom set. It is a safety concern because the driver's airbag will not deploy in a crash while the circuit is open.
Common Symptoms
Airbag/SRS warning light on
Horn does not work
Cruise control inoperative
Steering-wheel audio/phone buttons dead
Intermittent operation that worsens with steering
How to Fix
Scan SRS codes to confirm the clockspring (open driver-airbag circuit) rather than the airbag module or sensor. Replace the clockspring assembly with the steering wheel centered/locked, then clear the SRS codes. Confirm horn, cruise, and wheel controls return and the airbag light goes out. Use the correct clockspring for vehicles with/without steering-wheel controls.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2022-2023 Jeep Grand Cherokee, a documented recall affected certain 2022-2023 Grand Cherokee and Grand Cherokee L vehicles because steering column intermediate shaft hardware may not have been properly secured. Owners and regulators flagged the possibility of steering separation or loss of steering control, sometimes preceded by looseness, clunks, or abnormal steering feel. Even when symptoms are subtle, this is a serious defect because it directly affects directional control.
Common Symptoms
steering wheel play
clunk when turning
loose or vague steering feel
steering wheel off-center
abnormal steering feedback
How to Fix
Inspect the intermediate shaft connection, pinch bolt torque, and steering column coupling per FCA recall procedure. Dealers replace or correctly secure the shaft hardware and verify steering operation afterward. Any steering play, clunk, or off-center wheel should be checked immediately and the vehicle should not be used until repaired.
Owner tips & cautions
TipOwners commonly recommend checking for any steering clunk or free play during a test drive after recall completion rather than assuming the repair was done correctly.
TipIf the wheel is no longer centered after repair, request a steering angle calibration and alignment check.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2023-2024 Jeep Grand Cherokee, fCA US recalled 121,398 model-year 2023-2024 Grand Cherokee (78,157 units) and Grand Cherokee L (43,241 units) vehicles because the second-row head restraints contain an internal locking mechanism with an interference condition. When the seatback is folded down, the mechanism can stick, leaving the headrest folded forward and unable to lock in the upright position. A head restraint that doesn't lock falls below the federally required minimum height (about 29.5 in) and increases the risk of occupant injury (whiplash/head injury) in a crash, violating FMVSS 202a.
Common Symptoms
second-row headrest will not lock upright
headrest stuck folded forward after folding seat
head restraint sits below required height
How to Fix
Take the vehicle to a Jeep dealer; they will inspect and, if necessary, replace both second-row head restraints at no charge. Verify whether the second-row headrests fully lock upright after folding the seats; if one stays folded forward, the part needs replacement. Check VIN recall status via NHTSA or Mopar owner site.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2014-2023 Jeep Grand Cherokee 3.0L EcoDiesel V6 (VM Motori A630), the Bosch CP4.2 high-pressure fuel pump on 3.0L EcoDiesel Grand Cherokees can fail catastrophically and grind metal debris into the fuel rails, lines, and injectors. Because the contamination spreads before symptoms appear, a single pump failure often ruins most of the high-pressure fuel system, and the engine can stall without the ability to restart — a stranding/crash risk. Stellantis issued recall FCA Z46 covering certain EcoDiesel Grand Cherokee (and Ram 1500) vehicles, replacing the pump and contaminated components. Repairs done out-of-warranty commonly run $3,000-$6,000 because the entire fuel system must be cleaned or replaced.
Sudden loss of power or stalling, sometimes no-restart
Hard starting or long crank
Check-engine light with low fuel-rail pressure
Metal glitter found in fuel filter/system
Rough running before failure
How to Fix
Verify and complete the open recall (FCA Z46) at a dealer; the fix replaces the defective HPFP and any debris-contaminated components. If P0087 / fuel-pressure faults or sudden stalling occur, stop driving and have the high-pressure fuel system inspected for metal contamination — running the engine spreads debris further. Some owners proactively fit a fuel-system disaster-prevention/lift-pump kit to reduce CP4 failure risk.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2021 Jeep Grand Cherokee 3.6L Pentastar V6, on the WK2 Jeep Grand Cherokee with the 3.6L Pentastar V6, P0171 (and frequently P0174 alongside it) is most commonly triggered by unmetered air entering the engine through a deteriorated intake manifold gasket or a cracked/warped plastic intake manifold. The Pentastar's rubber-and-plastic gaskets become brittle from years of heat cycling and crack, letting in extra air so the upstream O2 sensors report a persistent lean condition. A closely related contributor is the notorious oil filter housing/oil cooler adapter in the engine valley (under the intake manifold) cracking, which is usually addressed at the same time since the intake has to come off. Some early cases are resolved with a PCM software update before parts are replaced.
Common Symptoms
Check engine light on
Rough or shaky idle
Hissing/whistling sound from engine bay
Slight loss of power or hesitation
Occasional stalling at idle
How to Fix
Smoke-test the intake to confirm the vacuum leak, then replace the intake manifold gasket set (and the plastic intake manifold itself if cracked/warped). Because access requires removing the intake, shops commonly replace the leak-prone oil filter housing at the same time. Check for any available PCM software update first, and verify fuel trims return to normal after the repair.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 1999-2004 Jeep Grand Cherokee, the combined in-tank fuel pump / level-sender module on the WJ Grand Cherokee wears out with age: the pump loses pressure (needs ~49-58 psi) causing crank-no-start or hot stalling, while the integrated sending-unit float/resistor card fails causing erratic or stuck fuel-gauge readings. Both a no-start and a jumpy fuel gauge are heavily searched WJ complaints and often the same module.
Fuel-pressure test before replacing. Replace the complete in-tank fuel pump module assembly (Mopar module by application, or quality aftermarket Airtex/Spectra/Delphi for 1999-2004 WJ) rather than just the pump. If the gauge stays erratic after replacement, check the tank-to-cluster wiring/grounds and the instrument cluster gauge circuit. Avoid bending the float arm on install.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, the WK2 uses a saddle-style fuel tank with two fuel-level senders (one per lobe). The sender floats/rheostats stick or wear, and the PCM flags a sender that no longer tracks fuel consumption, setting P2068 (or related P0461/P0463) and a 'Service Fuel Level Sensor' message. Symptoms include a gauge stuck on Full or Empty, wildly bouncing readings, and an inaccurate Distance-to-Empty. It usually doesn't affect running but can strand an owner who trusts a stuck-full gauge, and it commonly requires dropping the tank to access the sender/module.
Common Symptoms
Fuel gauge stuck on Full or Empty
Gauge reading bounces or drops erratically
'Service Fuel Level Sensor' warning message
Inaccurate Distance-to-Empty / range readout
P2068 or related fuel-level codes
Gauge slow to rise after fill-up
How to Fix
Scan for P2068/P0461/P0463 and confirm which sender is faulty. Inspect the sender for a stuck float and check connector/wiring; some intermittent stuck floats free up, but a failed sender requires replacement of the affected fuel-level sensor/sender module (often the in-tank pump/sender assembly), which typically means lowering the fuel tank. Recalibrate/verify gauge sweep after repair.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, wK2 Grand Cherokees use a capless (Easy Fuel) filler neck with a spring-loaded flapper door and an internal one-way check valve. Over time the flapper mechanism sticks or fails to seal, and the check valve at the tank inlet can hang up, causing the fuel pump nozzle to click off repeatedly and refuse to fill the tank — the classic 'won't take gas' complaint, often worse with modern ORVR pump nozzles. FCA revised the filler-neck part number multiple times, indicating a recognized design weakness. Beyond the fueling nuisance, a poorly sealing filler can contribute to EVAP (P0455/P0456) complaints.
Common Symptoms
Fuel pump nozzle clicks off after a few seconds
Tank very slow to fill or won't accept fuel
Fuel splashback at the filler
Broken or stuck flapper door in the filler
Occasional EVAP check-engine light (P0455/P0456)
Must trickle-fill to top off the tank
How to Fix
Inspect the capless filler neck flapper and internal check valve; clean debris and verify the flapper closes/seals. If it sticks or the nozzle keeps clicking off, replace the capless fuel filler neck with the latest revised part. As a temporary field workaround owners report inserting the nozzle more slowly (or gently holding the flapper open) — but the durable fix is filler-neck replacement. Rule out a plugged EVAP/vent restriction if fill problems persist after replacement.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2005-2010 Jeep Grand Cherokee, wK Grand Cherokees with independent front suspension commonly generate owner complaints about front-end whining, grinding, clunking on turns, or vibration traced to worn front differential bearings, axle shaft joints, or CV boots. The issue is more common on higher-mileage 4WD vehicles and those used off-road or with neglected fluid service. If ignored, bearing wear can progress to significant drivetrain noise or axle damage.
Common Symptoms
Whining from front drivetrain
Grinding or growling at speed
Clicking on turns
Vibration under acceleration
Grease leaking from torn CV boot
How to Fix
Road test to isolate noise under load, coast, and turning, then inspect CV boots, axle play, and front differential fluid condition for metal debris. Repairs may involve replacing one or both CV axles, rebuilding the front differential with bearings/seals, or replacing the differential assembly if gear damage is present. After repair, verify correct fluid specification and inspect front driveshaft and wheel bearings to avoid misdiagnosis.
Owner tips & cautions
TipOwners recommend checking CV boots and differential fluid at every brake or tire service because early boot tears often prevent more expensive differential damage.
TipUse chassis ears or a mechanic's stethoscope during diagnosis to separate wheel-bearing noise from differential bearing noise.
Medium Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2011-2021 Jeep Grand Cherokee, grand Cherokee 4x4 differentials (and the transfer case) are a known spot for pinion-seal leaks — owners find gear oil weeping where the driveshaft meets the diff, leaving puddles and, if ignored, running the diff low on lube. A low/contaminated differential then produces a speed-related whine or howl (rising on acceleration or deceleration depending on which gear/bearing is loaded). RepairPal documents many pinion-seal/transfer-case leak cases on the platform. A caution: careless seal replacement (over-torquing the pinion nut and crushing the collapsible spacer) destroys pinion-bearing preload, so the repair must be done correctly.
Common Symptoms
Gear-oil puddle/residue at the driveshaft-to-differential joint
Speed-dependent whine or howl from front or rear axle
Whine changes on acceleration vs deceleration
Low differential fluid level
Metal glitter on the diff fill plug (advanced wear)
Transfer-case output seal also weeping
How to Fix
Inspect the front and rear diff pinion flanges and transfer-case output for gear-oil weepage; confirm fluid level. Replace the leaking pinion seal, marking pinion-nut position/turns to preserve preload (or setting new preload with a fresh crush sleeve) to avoid bearing damage. If gear whine is already present from prior low-lube running, evaluate the ring/pinion and bearings and refill with the correct spec gear oil. Address any transfer-case seal leaks at the same time.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, grand Cherokees with the two-speed Quadra-Trac II / Quadra-Drive II transfer cases throw a 'Service 4WD System' message when the transfer-case shift actuator motor (or the transfer-case control module) fails, leaving the vehicle unable to engage Low range or Neutral and sometimes producing a grinding noise. Owners and shops report it is difficult to diagnose: replacing the actuator motor does not always fix it, and some vehicles ultimately need a transfer case. Codes such as C140F are associated with the actuator failure. It is a high-demand complaint because the warning is alarming and the off-road/low-range function is lost.
Common Symptoms
'Service 4WD System' warning message
Cannot engage 4-Low or Neutral
Grinding or clicking noise from the transfer case
4WD inoperative
C140F / transfer-case actuator fault codes
How to Fix
Scan for transfer-case actuator/control codes (e.g., C140F) before parts replacement. The shift motor is accessible after removing the belly skid guards (four bolts and a connector) and is the first replacement; if the fault persists, test the transfer case control module and wiring, and inspect the actuator's internal encoder ring/case for damage before condemning the whole transfer case. Verify any applicable recall coverage tied to the fault code.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 1999-2004 Jeep Grand Cherokee, the WJ's on-demand NV247 (Quadra-Trac II) and full-time NV242 (Selec-Trac) transfer cases suffer fluid leaks from the case split-line, rear output slip-yoke seal and a plugged vent, plus a pressure/heat issue: many 1999 units were filled with the WRONG fluid from the factory. Low/incorrect fluid leads to the NV247's progressive coupling binding, chatter on turns and eventual internal wear.
Common Symptoms
Fluid leak at the rear output seal or case seam
Low transfer-case fluid
Bind, chatter or hop on tight turns (NV247)
Whine/growl from the transfer case
Fluid pushed out of the vent when hot
How to Fix
Keep the transfer case topped and use the correct fluid — the NV247 requires Mopar/NV247 ATF (equivalent to Mobil 424 hydraulic-tractor fluid), NOT ordinary gear oil. Fix leaks by replacing the rear output/slip-yoke seal and resealing the case halves, and clear/replace the plastic vent cap so pressure can't push fluid past the seals. Verify factory fill on early 1999 units.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, wK2 Grand Cherokees commonly develop a speed-dependent driveline vibration or shudder felt through the floor/seat, typically appearing around 45-75 mph and often worse under light acceleration or on deceleration. The rear driveshaft uses CV-style joints and a splined slip section; grease can migrate out of the slip joint and collect in the rubber accordion boot, the CV joints wear or bind, and the center support/CV angles fall out of spec, all producing the vibration. Motor and transmission mounts (which also fail on these trucks) can amplify or mimic the symptom, complicating diagnosis. Heavier V8/SRT/Trackhawk models with more torque tend to surface it sooner.
Common Symptoms
Vibration or shudder felt in floor/seat at 45-75 mph
Worse under light throttle or when decelerating
Droning/humming that rises with road speed
Grease slung inside the driveshaft boot area
Clunk on takeoff if joints are worn
Vibration reduced after mount replacement (partial cause)
How to Fix
Diagnose by roadtest and by inspecting the rear propshaft: clean redistributed grease out of the slip-joint boot and re-grease the slip yoke, check CV joints for play/binding, and verify driveshaft/pinion angles and center bearing condition. Rebalance or replace the rear driveshaft assembly if joints are worn. Confirm engine and transmission mounts are not collapsed (a frequent contributor). Replacing a worn rear driveshaft or reconditioning the slip joint typically resolves it.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2022-2024 Jeep Grand Cherokee, multiple 2022-2024 Grand Cherokee and Grand Cherokee L vehicles were recalled for rear coil springs that may not have been installed correctly, allowing the spring to detach from its upper mount. Owners reported a loud bang from the rear, sudden sagging ride height, and in some cases tire contact with the wheel well. This is a real safety issue because it can affect handling and can damage the tire, increasing crash risk.
Common Symptoms
loud bang from rear suspension
rear of vehicle sitting low on one side
clunking over bumps
tire rubbing noise from rear wheel well
unstable handling
How to Fix
Inspect rear ride height, spring seating, upper isolators, and any signs of spring displacement or tire rub. Vehicles covered by the recall receive inspection and replacement of the rear coil spring assemblies as needed, along with related hardware if damaged. If symptoms appear before recall service, the vehicle should not be driven until the rear suspension is checked.
Owner tips & cautions
TipIf the rear suddenly drops or you hear a bang, inspect for spring displacement and tire rub immediately; many owners recommend towing rather than driving to the dealer.
TipAfter recall repair, ask the dealer for an alignment check if the vehicle was driven while sagging or rubbing.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
Community reported
920 owners
On the 2011-2021 Jeep Grand Cherokee, the Quadra-Lift air suspension system can fail, causing the vehicle to sit low or unevenly. Air springs can leak, the compressor can fail, or height sensors can malfunction. Repairs can be expensive due to the complexity of the system.
Common Symptoms
Vehicle sitting low on one or more corners
Suspension service warning
Compressor running constantly
Vehicle won't raise or lower
Uneven ride height
Air hissing sound
How to Fix
Diagnose which component has failed - air springs, compressor, or sensors. Replace leaking air springs with OEM or quality aftermarket. Check for error codes with scan tool. Some owners convert to traditional coil springs to eliminate recurring issues.
Owner tips & cautions
TipConsider OEM parts for critical components like sensors and electrical parts - aftermarket can be unreliable
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
TipSearch Jeep Grand Cherokee forums and owner groups for real-world experiences and DIY guides
TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
High Confidence920 reportsLast reported by owners Feb 2024Reviewed Feb 2026
On the 2011-2021 Jeep Grand Cherokee, front wheel hub/bearing assemblies are a recurring wear failure on the WK2 Grand Cherokee, producing a humming, whining, or growling noise that rises with road speed (commonly noticeable from about 35-50 mph) and often changes pitch when the vehicle is loaded or steered left/right. The integrated hub/bearing units wear relatively early, and owners frequently report needing replacement on one or both front corners. Left unaddressed the bearing can develop play and eventually trigger ABS/traction warnings or, in severe cases, lead to hub damage.
Common Symptoms
Humming/whining/growling that increases with speed
Noise changes pitch when turning left or right
Vibration felt through floor/steering at highway speed
Possible ABS or traction-control light if bearing develops play
How to Fix
Confirm the failing corner by listening for the speed-dependent hum and checking for bearing play; the noise typically worsens when turning toward the good side. Replace the affected front hub/bearing assembly (sold as a complete unit). Replacing in pairs is common when both have similar mileage. Verify ABS sensor function after replacement.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2021 Jeep Grand Cherokee, the WK2 Grand Cherokee independent front suspension develops a clunk/knock over bumps as the rearmost front lower control arm bushing splits and the front sway-bar end-link pins wear out. The sway-bar link pins are a very common and loud offender; worn lower-control-arm bushings and ball joints add to it, and the front subframe bushings can creak as weight shifts at low speed. It is one of the most-searched WK2 noise complaints because it is common, gets progressively louder, and is often misdiagnosed.
Common Symptoms
Clunk or knock from the front over bumps
Banging noise on rough roads or driveway transitions
Creak/squeak at low speed when weight shifts
Loose/vague steering feel
Noise eases on smooth pavement
How to Fix
Diagnose in order: first replace the front sway-bar end links (cheapest, most common cause of the bang/clunk), then inspect lower/upper ball joints and the lower control arm rearward bushing, replacing the bushing or complete control arm if the rubber is split. Address subframe bushing creak separately if present. Many owners do the links and bushings as a DIY job.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2014-2016 Jeep Grand Cherokee 3.0L EcoDiesel V6, the diesel-exhaust-fluid (DEF/reductant) system on the 3.0L EcoDiesel Grand Cherokee is a frequent failure point. The integrated DEF tank assembly bundles the pump, heater, and level/temperature/pressure sensors into one unit; when any single internal component fails (commonly the pump pressure or the tank heater), it sets emissions codes. Because Mopar does not sell the internal components separately, a single failure requires replacing the entire tank assembly. Critically, an unresolved DEF fault escalates to a speed-limited limp mode and ultimately a no-start once the dashboard mileage countdown expires, stranding the vehicle.
Common Symptoms
'Service DEF system / X miles to no start' warning and countdown
Speed-limited limp mode
No-start once countdown expires
Check-engine light with reductant/DEF codes
How to Fix
Diagnose the specific DEF code; for an internal pump/heater/sensor failure replace the complete Mopar DEF tank assembly, refill with fresh DEF, and run the doser-pump prime/override procedure with a capable scan tool to avoid re-setting a pressure code. Address before the mileage countdown reaches zero to avoid a no-start. Verify DEF quality and clear the countdown.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2019 Jeep Grand Cherokee 3.6L Pentastar V6, pentastar Grand Cherokees commonly set P0420 (Bank 1) and/or P0430 (Bank 2) catalyst-efficiency check-engine codes. While these can indicate a degraded catalytic converter, on many 2014-2019 vehicles the codes are triggered by an overly sensitive PCM calibration (addressed by software reflash TSBs such as 18-001-26) or by a lazy downstream oxygen sensor or exhaust leak rather than a truly failed converter. Upstream causes such as engine misfires or oil consumption (PCV-related) can also degrade the catalyst over time. Because OEM converters are expensive, accurate diagnosis is essential.
Common Symptoms
Check-engine light with P0420 and/or P0430
Failed emissions/readiness test
Mild fuel-economy drop
Often no drivability symptoms
How to Fix
Do not replace the converter first. Check for and apply the PCM software update (TSB-driven recalibration), inspect for exhaust leaks, and test/replace the downstream (post-cat) oxygen sensor. Repair any underlying misfire or oil-consumption issue. Only replace the catalytic converter after confirming low conversion efficiency with the software current and O2 sensors good.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2005-2021 Jeep Grand Cherokee, the Jeep Grand Cherokee uses a Natural Vacuum Leak Detection (NVLD) approach for its EVAP system, implemented through the Evaporative System Integrity Module (ESIM) — commonly called the leak detection pump. The ESIM is a standalone unit (typically mounted on the charcoal canister near the rear driver-side wheel well) that seals the fresh-air vent and uses natural temperature-induced pressure changes to verify the fuel-vapor system holds vacuum. The internal seal/diaphragm and check mechanism in the ESIM are a well-documented common failure point on Chrysler/Jeep platforms. When the unit fails, the PCM cannot complete its EVAP self-test and falsely reports an EVAP leak, illuminating the check engine light even though no actual leak exists. Because the same codes are thrown by a loose or worn gas cap, the failure is frequently misdiagnosed: owners (and even shops) replace the gas cap first, the light returns, and the actual ESIM/leak-detection-pump fault is missed. A simple field test is to remove the ESIM and shake it — a rattle indicates the internal valve has come loose and the unit needs replacement. Note that the EVAP purge-valve hose on top of the engine also becomes brittle and cracks (covered by Jeep TSBs #25-002-15 REV-B and #18-035-20), producing the same codes, so the hose should be inspected before condemning the ESIM. This is an emissions-only fault: it does not harm the engine or transmission but will fail a state emissions/smog test.
Common Symptoms
Check engine light on (often intermittent, may clear and return)
OBD-II scan shows P0456 (small EVAP leak), P0455 (large EVAP leak), or P0457 (loose fuel cap / large leak)
"Check Fuel Cap" / gas cap warning message
Fuel/gasoline odor near the vehicle in some cases
Failed state emissions or smog test
Light returns shortly after a gas cap replacement (sign of misdiagnosis)
Occasional slightly extended cranking
ESIM rattles when removed and shaken (failed internal valve)
How to Fix
Diagnose before replacing parts. (1) Inspect/re-tighten or replace the gas cap and confirm it clicks and seals — rule out the cheapest cause first. (2) Visually inspect the thin plastic EVAP purge-valve hose on top of the engine for cracks/splits (especially at connection points) per TSB #25-002-15 REV-B; replace if brittle/cracked — this alone fixes many cases. (3) Locate the ESIM/leak detection pump (on the charcoal canister near the rear driver-side wheel well); remove and shake it — if it rattles, the internal valve has failed and the module must be replaced. Replacement is a straightforward DIY: a new ESIM (OEM, or aftermarket such as Dorman 310-219) installs in place of the old one. After replacement, clear the codes and complete a few drive/fill cycles to confirm the EVAP monitor passes and the light stays off. If codes persist after ESIM and hose service, smoke-test the EVAP system to find a remaining leak (canister, lines, or fuel-tank-side seals).
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2021 Jeep Grand Cherokee, p0442 (small EVAP leak, roughly a 0.020–0.040 inch pinhole) is very common on the WK2 Grand Cherokee. The two dominant causes are a degraded gas cap rubber seal and, specific to this platform, a failed Evaporative System Integrity Module (ESIM) mounted in the rear driver-side wheel well. The ESIM is a well-documented WK2 failure point and often fails before other EVAP components; it is known to pass a smoke test yet still set the code because its internal switch fails to report the correct state to the PCM. A vapor canister purge valve stuck slightly open is a secondary cause. There are typically no drivability symptoms beyond the check engine light, and the code can be intermittent (may clear after a few good drive cycles once the cap is tightened).
Common Symptoms
Check engine light on
Intermittent fuel/vapor smell (rare)
No noticeable drivability change
Occasional gas cap warning
How to Fix
Start with a new OEM Mopar gas cap and confirm it clicks/seals; clear the code and drive several cycles. If it returns, replace the ESIM in the rear driver-side wheel well (accessed behind the fender liner, on the charcoal canister). If still present, smoke-test the EVAP system to find hose/purge-valve/canister leaks.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 1999-2004 Jeep Grand Cherokee, on the WJ the automatic-transmission fluid cooler is integrated inside the radiator end tank. As the radiator ages the internal cooler barrier fails, allowing engine coolant and ATF to intermix under pressure. The result is a pink/tan 'strawberry milkshake' in both the transmission and cooling system. Coolant (ethylene glycol) in the transmission destroys clutch material and can ruin the 42RE/45RFE if not caught quickly.
Common Symptoms
Pink/tan milkshake-colored transmission fluid
Overfilled transmission (rising fluid level)
Discolored or contaminated engine coolant
Harsh shifting, slipping, or limp mode
Coolant loss without external leak
How to Fix
Stop driving once contamination is found. Replace the radiator (OEM Mopar radiator by application, or aftermarket CSF/Spectra/Koyorad for 1999-2004 WJ) and thoroughly flush the cooling system. Flush/replace ATF and the transmission filter multiple times; badly contaminated transmissions need a rebuild. Many owners add an external auxiliary trans cooler and bypass the in-radiator cooler to prevent recurrence.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
Community reported
680 owners
On the 2011-2021 Jeep Grand Cherokee 3.6L Pentastar V6, the water pump on the 3.6L Pentastar V6 can fail, causing coolant leaks and overheating. The pump is internal and driven by the timing chain, making replacement labor-intensive. Failure often occurs between 80,000-120,000 miles.
Common Symptoms
Coolant leak
Overheating engine
Low coolant warning
White residue on engine
Sweet coolant smell
How to Fix
Replace water pump when symptoms appear or preventatively during timing chain service. Replace thermostat at same time. Consider replacing timing chain tensioners and guides if high mileage. Ensure proper cooling system bleeding after repair.
Owner tips & cautions
TipReplace water pump when symptoms appear or preventatively during timing chain service.
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
TipSearch Jeep Grand Cherokee forums and owner groups for real-world experiences and DIY guides
TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
High Confidence680 reportsLast reported by owners Feb 2024Reviewed Feb 2026
On the 2011-2021 Jeep Grand Cherokee 3.6L Pentastar V6, the integrated plastic-housing thermostat on the 3.6L Pentastar commonly fails stuck open or opens too early, so the engine never fully reaches operating temperature. The ECM sets P0128 (coolant temp below thermostat regulating temperature), and the driver gets weak cabin heat, sluggish warm-up, lower fuel economy, and increased oil contamination. It is one of the most frequently searched check-engine complaints on these engines and is an inexpensive, DIY-friendly fix.
Common Symptoms
P0128 check-engine code
Weak or slow-to-warm cabin heat
Temperature gauge slow to rise or reads low
Reduced fuel economy
Engine takes long time to warm up in cold weather
How to Fix
Replace the thermostat (integrated into the Mopar thermostat housing, e.g. 5184651AH-family for 3.6L) using an OEM-grade unit, then properly bleed all air from the cooling system via the bleeder. Verify the coolant temperature sensor and confirm correct coolant level before condemning the thermostat. Clear P0128 and confirm the engine reaches full temp over a few drive cycles.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2005-2013 Jeep Grand Cherokee, the Mercedes-derived W5A580 (NAG1) 5-speed automatic used in WK and early WK2 Grand Cherokees is mechanically strong but suffers well-documented electronic and fluid-related failures. Faulty conductor-plate speed sensors and shift-pressure solenoids drop the transmission into limp mode (stuck in a single gear). Contaminated or degraded fluid (including water intrusion past the dipstick/fill-tube seal) causes torque-converter-clutch shudder, harsh or delayed shifts, and a knock on coasting downshifts. The 13-pin connector adapter can also leak, wicking fluid into the harness by capillary action.
Common Symptoms
Transmission stuck in one gear (limp mode)
Harsh, delayed, or banging shifts
Shudder/buzz during light acceleration (TCC)
Knock when coasting/downshifting
Transmission warning or P0700-family codes
Fluid leak at electrical connector
How to Fix
Scan for transmission codes; for limp mode inspect/replace the conductor plate (with integrated speed sensors) and any failed shift solenoid, and replace the 13-pin connector adapter/seal if leaking. Perform a full fluid-and-filter service with the correct ATF (MB 236.x / Mopar spec). Address water intrusion at the fill tube. Severe internal damage from prolonged shudder may require a rebuild.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
Community reported
750 owners
On the 2014-2021 Jeep Grand Cherokee, the ZF 8HP 8-speed automatic transmission can exhibit harsh shifts, hesitation, or erratic behavior. Some owners report the transmission hunting between gears or feeling like it's in the wrong gear for the driving conditions.
Common Symptoms
Harsh or jerky shifts
Transmission hunting between gears
Delayed engagement from Park
Rough downshifts
Feels sluggish to respond
How to Fix
Update transmission software to latest calibration. Perform fluid change with ZF-approved ATF. Adaptive learning reset may improve shift quality. If issues persist, valve body inspection or replacement may be needed.
Owner tips & cautions
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
TipSearch Jeep Grand Cherokee forums and owner groups for real-world experiences and DIY guides
TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
High Confidence750 reportsLast reported by owners Feb 2024Reviewed Feb 2026
On the 1999-2010 Jeep Grand Cherokee, the 45RFE (and later 545RFE) automatic behind the 4.7L/HEMI/3.7L Grand Cherokee is prone to overheating (especially towing or in stop-and-go heat), torque-converter clutch (TCC) shudder from valve-body/pump bore wear, and delayed or harsh 3-4 / 4-5 shifts from broken check-balls and worn valve-body separator-plate circuits. A control fault can force limp-in (stuck in a single gear).
Common Symptoms
Shudder/vibration under light throttle at highway speed (TCC)
Harsh or delayed 3-4 and 4-5 upshifts
Overheating in traffic or while towing
Limp mode stuck in one gear
Slipping under load
How to Fix
Service first: fresh ATF+4 and a new filter, and address overheating with an added external transmission cooler. Shudder/harsh-shift fixes include a valve-body rebuild/upgraded check-ball kit and TCC accumulator/limit-valve repair (Sonnax bore-repair parts are the common cure). Verify solenoid pack / TRS if limp mode. Severe cases need a rebuild. Keep fluid below ~240F.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2021-2024 Jeep Grand Cherokee, on the new WL-generation Grand Cherokee and Grand Cherokee L, two assembly defects can cause loss of steering control. Upper control arm (UCA) pinch bolts damaged during assembly can break and let the UCA separate from the steering knuckle, dropping the wheel outboard. Separately, an incorrectly assembled steering column intermediate shaft can disconnect from the U-joint. Combined recalls cover well over 400,000 vehicles.
Common Symptoms
Increased free play or looseness in the steering
Clunking or unusual noise when turning
Wandering or imprecise steering
Sudden loss of steering control
Wheel/knuckle separation in severe cases
How to Fix
Have the open recalls performed: NHTSA 23V-352 replaces the steering column intermediate shaft / U-joint assembly, and 24V-131 (with related campaigns) inspects and replaces the upper control arm pinch bolts free of charge. Address any steering play or clunking immediately rather than waiting.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2000-2004 Jeep Grand Cherokee, wJ Grand Cherokees are well known for failing power window regulators, often due to broken plastic guides, cable failures, or regulator track issues. Owners frequently report a loud pop followed by the window dropping into the door or becoming crooked and inoperative. Failures are common on multiple doors over the life of the vehicle.
Common Symptoms
Window falls into door
Crunching or popping noise in door
Window moves crooked
Window motor runs but glass does not move
Intermittent window operation
How to Fix
Remove the door panel and inspect the regulator assembly, cable, and glass mounts. The standard repair is replacement of the complete regulator, often with an updated aftermarket metal-reinforced unit; inspect the switch and motor only if the regulator mechanism is intact. Replacing vapor barrier adhesive and checking door drains helps prevent moisture-related repeat issues.
Owner tips & cautions
TipOwners strongly prefer metal-backed or upgraded aftermarket regulators over early plastic-heavy designs.
TipHave spare door-panel clips on hand before disassembly because the originals often break during removal.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2022-2025 Jeep Grand Cherokee, owners have reported the hands-free/power liftgate on the WL Grand Cherokee opening unexpectedly, reversing while closing, beeping without completing the cycle, or failing to latch. Reports point to latch alignment issues, pinch-sensor calibration problems, weak struts, or software/body control faults. While not usually catastrophic, it is a recurring nuisance and can create injury risk or battery drain if the gate remains ajar.
Common Symptoms
liftgate beeps but does not close
liftgate reverses while closing
rear hatch says open when shut
hands-free liftgate works intermittently
battery drain from hatch not fully latched
How to Fix
Check for stored body/liftgate module faults, verify latch alignment and striker position, inspect pinch sensors and wiring in the hinge area, and test strut force. Dealers often address this with software updates, latch adjustment, sensor replacement, or liftgate module relearn procedures. If the gate bounces back or will not latch, avoid forcing it repeatedly because that can damage the cinch motor.
Owner tips & cautions
TipClean the latch and striker area and verify no cargo mat or weatherstrip interference before assuming a module failure.
TipOwners recommend performing the power liftgate height/memory relearn after battery replacement or low-voltage events.
Medium Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 1994-2004 Jeep Grand Cherokee, zJ (1993-1998) and especially WJ (1999-2004) Grand Cherokees in salt/rust-belt climates are notorious for corrosion of the rocker panels, rear quarter/wheel-arch lips, floor pans and rear cargo area. Because these are unibody structures, the rot is both cosmetic and structural, and it is a very common reason high-mileage examples fail inspection or get retired.
Common Symptoms
Bubbling paint and rust-through on rockers and rear wheel-arch lips
Perforated floor pans / water in cabin
Flaking rust in the rear cargo/spare-tire area
Structural weakness at jack points
How to Fix
Cut out corroded metal and weld in replacement panels: aftermarket rockers (Key Parts 0484-101 driver / 0484-102 passenger for 99-04 WJ) and rear wheel arches (Key Parts 0484-147), plus floor-pan sections as needed (Mill Supply / Classic 2 Current). Requires welding — professional bodywork recommended. Undercoat afterward and keep the rocker/pinchweld drain holes clear to slow recurrence.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, on WK2 Grand Cherokees the sunroof/panoramic roof drain tubes kink, slip off, or clog with debris and slime at the lower reducer fittings. When the drains back up, water overflows the roof track and runs down the A-pillars into the headliner and floor, soaking carpet and risking mold and electrical module corrosion. The lower hose hidden near the driver kick panel is a frequent partial-clog point.
Common Symptoms
Water dripping from the headliner or A-pillars after rain or a car wash
Wet front or rear floor carpet
Musty / mildew smell inside the cabin
Water pooling in footwells
Fogged windows or intermittent electrical faults from moisture
How to Fix
Clear the front and rear drain tubes with low-pressure compressed air or a flexible line (avoid high pressure, which can pop the tube off the roof). Re-seat or replace cracked/disconnected tubes; some require partial headliner removal. Dry the carpet/underlayment fully to prevent mold and protect floor electronics.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2021-2023 Jeep Grand Cherokee, on 5th-gen WL Grand Cherokee and Grand Cherokee L with the dual-pane panoramic sunroof, water can leak into the headliner and A-pillar areas. Chrysler issued TSB 23-102-23 for 2021-2023 units built on or before Feb 6, 2023, identifying the wind deflector assembly as a cause: it can trap the sunroof panel and create a poor seal. Clogged front/rear sunroof drain channels are a second common cause, allowing water to seep into the headliner and pillars and potentially reach electrical components. A related TSB (23-035-21) addresses sunroof rattle from loose mounting fasteners on early 2021 builds.
Common Symptoms
water dripping from headliner or A-pillar
wet headliner/carpet after rain or car wash
musty smell
sunroof rattle on rough roads
How to Fix
Per TSB 23-102-23, have the dealer replace the wind deflector assembly with the updated part. Independently, clear the front and rear sunroof drain tubes of debris to restore drainage. For sunroof rattle on early builds, TSB 23-035-21 replaces the sunroof mounting fasteners. Address leaks promptly to avoid wet headliner, mold, and corrosion of nearby electrical connectors.
High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2011-2021 Jeep Grand Cherokee, wK2 Grand Cherokee owners frequently report water pooling in the rear cargo well, spare-tire compartment, or under the cargo floor after rain or a car wash. The leak is typically traced to the wiring grommet/pass-through boot at the top of the liftgate (behind the spoiler/CHMSL), a poorly seated tail-lamp gasket, or the roof antenna base and roof-rail seams, where water runs down the D-pillar and collects in the cargo area. Because the water tracks along interior channels, the entry point is often far from where it puddles, making it a difficult DIY diagnosis. Left unaddressed it soaks carpet/insulation, causes musty odor, mold, and can migrate to nearby electrical modules (the rear-mounted body/park-brake electronics), leading to secondary electrical faults.
Common Symptoms
Standing water in rear cargo well or spare-tire area after rain or car wash
Musty/mildew smell inside the vehicle
Damp or soaked cargo carpet and insulation
Water dripping from headliner near the liftgate or D-pillar
Fogged rear glass or interior condensation
Occasional rear electrical gremlins after wet weather
How to Fix
Perform a systematic water test from bottom up. Reseat and reseal the liftgate wiring grommet/boot behind the spoiler (a common revised-part/RTV fix), inspect and re-torque tail-lamp mounting nuts and replace the foam tail-lamp gaskets, and reseal the roof antenna base and any roof-rack/rail bolt holes with black butyl or silicone. Verify liftgate weatherstrip seating. Dry out and, if soaked, replace cargo insulation to stop odor/mold. Because water can reach rear electronics, confirm no corrosion at the park-brake actuator and rear harness connectors while inside.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2005-2021 Jeep Grand Cherokee, because the A/C condenser sits at the very front of the Grand Cherokee behind the grille, it is highly exposed to rocks and road debris, which puncture the thin tubes and cause refrigerant loss. Condenser leaks are one of the leading causes of an A/C that blows lukewarm or no cold air; as refrigerant escapes, the system's pressure sensor will eventually disable the compressor to protect it. Owners commonly chase recharges that don't hold before the leaking condenser is identified.
Common Symptoms
A/C blows warm or only slightly cool air
Cooling that works briefly then fades (slow leak)
Compressor not engaging due to low-pressure lockout
Refrigerant recharge that doesn't last
Visible oily residue/dye at the condenser
How to Fix
Perform a dye or electronic leak test to confirm the condenser as the leak point. A leaking condenser cannot be repaired and must be replaced, followed by an evacuation, vacuum, and recharge with the correct refrigerant/oil. Replace the receiver/drier as part of the job. Address any debris damage to prevent recurrence.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2005-2021 Jeep Grand Cherokee, grand Cherokees develop heater-core problems from two directions: internal clogging (residual casting sand/scale restricting the fine tubes, producing weak or no heat) and leaks at the core or its plastic firewall inlet/outlet elbows (producing a sweet coolant smell, a greasy fog film on the inside of the windshield, and a damp passenger-side floor). A leaking core also slowly loses coolant and can lead to overheating. The repair is labor-intensive because the dash must be removed to reach the core buried in the HVAC housing, so misdiagnosis is costly.
Common Symptoms
Sweet/syrupy coolant smell inside the cabin
Greasy fog film on inside of windshield
Damp or wet front passenger floor carpet
Little or no heat from the vents
Unexplained slow coolant loss
Windows fog and won't clear with defrost
How to Fix
Confirm the diagnosis: sweet smell + foggy windshield + wet passenger carpet = leaking core; cold-only output with good coolant flow points to a clogged core (attempt a back-flush first). Pressure-test the cooling system and inspect the plastic heater pipes/elbows at the firewall, which can be replaced separately if that's the leak point. If the core itself leaks or is clogged, replace the heater core (dash-out labor). Refill and bleed the cooling system afterward and verify heat and no coolant loss.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 1994-2004 Jeep Grand Cherokee, the HVAC blower-motor resistor on ZJ (1993-1998) and WJ (1999-2004) Grand Cherokees commonly burns out, leaving the fan working only on the highest setting (which bypasses the resistor). A worn blower motor drawing excess amperage cooks the resistor, and the connector often overheats. Very common, cheap, high-search fix.
Common Symptoms
Blower only runs on the highest (or a single) speed
No airflow on low/medium settings
Intermittent fan operation
Burnt smell or melted resistor connector
How to Fix
Replace the blower motor resistor located under the passenger-side dash — Mopar 5012699AA (RU-358) fits 1999-2004 WJ with ATC; use the matching resistor for manual A/C (Crown 4720278 for 93-99 ZJ/WJ manual). If a new resistor fails quickly, also replace the aging blower motor and the burnt resistor connector/pigtail to stop repeat failures.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, a failing front wheel speed (ABS) sensor commonly lights up the ABS, ESP/BAS, and traction-control warnings together on the Grand Cherokee, often the right-front sensor. Because the stability and ABS systems share wheel-speed data, one bad sensor disables anti-lock braking, electronic stability program, hill-start assist, and traction control until repaired, and can also throw a 'Service 4WD' message. Packed snow/ice/mud or a damaged tone ring can mimic the failure. It is a frequently reported and frequently searched complaint because of how many warning lights it sets at once.
Common Symptoms
ABS, ESP/BAS and traction-control lights on together
Anti-lock braking and stability control disabled
Speedometer drop-out or erratic reading
'Service 4WD' message in some cases
Lights may clear after cleaning debris from the sensor
How to Fix
Scan for the wheel-speed-sensor code to identify the affected corner, then clean the sensor/tone-ring area first (debris can trigger it) before replacing. Replace the failed wheel speed sensor (commonly the right front) and inspect the wiring/tone ring; clear the codes and verify all stability/ABS lights extinguish on a road test. Confirm correct sensor air-gap and seating on reinstall.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2000-2010 Jeep Grand Cherokee, repeated owner complaints describe front brake pulsation, steering wheel shake under braking, and rotors that develop thickness variation or hot spots well before expected service life. This issue is especially well known on WJ models, though WK owners also report premature rotor wear. The problem is often worsened by heavy vehicle weight, marginal rotor capacity, seized slide pins, or uneven lug torque after service.
Common Symptoms
Brake pedal pulsation
Steering wheel shakes when braking
Premature front pad wear
Burning smell after braking
Vehicle pulls during braking
How to Fix
Inspect rotor runout, thickness variation, pad wear pattern, caliper slide movement, and hub face cleanliness. The lasting repair is usually quality rotors and pads, proper hub cleaning, lubricated slide pins, and torqueing wheels to spec; if calipers are sticking, replace or rebuild them. Simply machining thin rotors often leads to quick recurrence.
Owner tips & cautions
TipOwners commonly recommend premium coated rotors and ceramic or severe-duty pads instead of economy parts, plus replacing hardware and lubricating slide pins every brake job.
TipUse a torque wrench on lug nuts and clean rust from the hub face to prevent rotor runout after installation.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2011-2021 Jeep Grand Cherokee 5.7L HEMI V8, on 5.7L HEMI-equipped Grand Cherokees, the steel bolts/studs that hold the cast-iron exhaust manifolds to the cylinder heads repeatedly heat-cycle and snap, most commonly at the rear of each manifold. The broken hardware opens a small gap that lets exhaust escape, producing a metallic 'tick' or 'tap' that is loudest on a cold start and quiets as the engine warms and the metal expands to temporarily reseal the leak. This is a well-known HEMI-wide failure (shared with Durango and Ram 1500) and is distinct from the MDS lifter 'HEMI tick.' Left unrepaired it worsens, can fail an emissions/exhaust inspection, and the broken stud ends can seize in the head and require drilling/extraction.
Common Symptoms
Metallic ticking or tapping noise loudest on cold start
Tick quiets or disappears as engine warms up
Exhaust/ticking noise from the engine bay under acceleration
Soot or black leak marks at the manifold-to-cylinder-head joint
Slight exhaust smell at idle
How to Fix
Replace the failed manifold bolts/studs with the updated Mopar double-ended stud hardware and new exhaust manifold gaskets; many shops convert all fasteners to studs/nuts so the manifold can be torqued evenly. Use new hardware on every bolt location — heat-fatigued originals will fail again. Confirm the diagnosis by listening for a cold-start tick that fades when warm and inspecting for soot/leak tracks at the manifold-to-head flange. If a stud has broken flush, it must be drilled and extracted; in severe cases a warped manifold is resurfaced or replaced.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026
On the 2000-2010 Jeep Grand Cherokee, a very common Grand Cherokee problem across both WJ and WK generations is failure of the HVAC blend doors or their actuators. Owners report loss of temperature control, air stuck on hot or cold, clicking behind the dash, or dual-zone systems blowing different temperatures side to side. On WJ models, the plastic blend doors themselves commonly crack or detach; on WK models, actuator motors and door linkages are frequent failure points.
Common Symptoms
No heat from vents
A/C stuck on hot or cold
Driver and passenger vents different temperatures
Clicking or knocking behind dash
Airflow mode changes incorrectly
How to Fix
Diagnose by commanding temperature changes and listening for actuator movement or clicking, then verify door travel with a scan tool or manual inspection where possible. Repair ranges from replacing an actuator to installing updated blend-door repair kits; on some vehicles, full HVAC box access requires major dash disassembly, though aftermarket repair kits can reduce labor on WJ models. If poor heat is also present, confirm the heater core is not restricted before replacing doors.
Owner tips & cautions
TipOn WJ models, many owners use aftermarket metal or reinforced blend-door repair kits to avoid repeat failure and reduce dash removal labor.
TipBefore replacing parts, run the HVAC calibration/self-test procedure and verify coolant flow through the heater core so a clogged core is not mistaken for a door problem.
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2011-2023 Jeep Grand Cherokee, owners of panoramic-sunroof-equipped Grand Cherokees (WK2 and 5th-gen WL) report the glass panel spontaneously shattering or 'exploding' with a loud pop while driving on clear days, with no impact. NHTSA complaints and forum reports describe the tempered panel bursting outward/inward, sometimes at low mileage. Suspected causes include factory pre-stress in the tempered glass, ceramic-frit edge stress, thermal cycling, and frame/mechanism stress on the panel. Beyond the repair cost, flying glass and startle-factor while driving make it a safety concern; owners frequently struggle to get warranty coverage and pay out of pocket.
Common Symptoms
Loud pop/bang followed by shattered sunroof glass
Spider-cracked or collapsed panoramic panel with no impact
Glass falling into cabin (often caught by sunshade)
Occurs at speed on clear days
Wind noise/water entry after the panel breaks
Sudden startle event while driving
How to Fix
There is no preventive repair — the panel must be replaced with new tempered glass (dealer or auto-glass shop), and owners should verify the sunroof frame/track and drains are correct so the replacement isn't re-stressed. Document the event and file an NHTSA complaint (helps trigger any future investigation/coverage) and check comprehensive insurance, which often covers glass with low/no deductible. Retain any FCA/Stellantis goodwill-assistance option for low-mileage vehicles.
Medium ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jul 2026
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Chrysler (FCA US, LLC) is recalling certain 2022-2023 Jeep Grand Cherokee and 2023-2024 Jeep Grand Cherokee L vehicles. An improperly connected coaxial cable may prevent the rearview camera image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Campaign #24V28900025/04/2024
AIR BAGS:FRONTAL
Chrysler (FCA US, LLC) is recalling certain 2024 Jeep Grand Cherokee vehicles. The front bumper may be missing energy absorbing foam, which can cause the front air bags not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
How much does it cost to fix common Jeep Grand Cherokee problems?
Repair costs for known Jeep Grand Cherokee issues range from $0 to $12,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, TIPM (Fuse Box) Failure, typically costs $800-$1,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year Jeep Grand Cherokee is the most reliable?
Reliability varies across model years of the Jeep Grand Cherokee. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 1994-2026 Jeep Grand Cherokee with 77 documented issues documented across 6,332+ owner reports.
What is the 2011-2017 Jeep Grand Cherokee TIPM (Fuse Box) Failure?
The Totally Integrated Power Module (TIPM) can fail, causing various electrical issues including fuel pump relay problems (no start), random horn honking, and erratic behavior of lights and accessories. Repairs typically run $800-$1,500. Severity: high.
What is the 2011-2021 Jeep Grand Cherokee 5.7L HEMI MDS Lifter Collapse and Camshaft Lobe Wear ("HEMI Tick")?
On the 5.7L HEMI, the Multi-Displacement System (MDS) cylinder-deactivation roller lifters can collapse or seize, which in turn wipes the corresponding camshaft lobe. This produces the persistent hot-idle 'HEMI tick.' Once a lifter fails it spreads metal debris through the engine… Repairs typically run $1,500-$7,000. Severity: high.
What is the 2014-2019 Jeep Grand Cherokee 3.0L EcoDiesel EGR Cooler Internal Crack Allowing Coolant Into Intake — Fire Risk (Recall 20V-699 / W79)?
The EGR cooler on 3.0L EcoDiesel Grand Cherokees is susceptible to thermal fatigue and can crack internally over time. A cracked cooler introduces pre-heated, vaporized coolant into the EGR/intake system, where it can interact with hydrocarbons and air and ignite, producing combu… Repairs typically run $0-$1,800. Severity: high.
What is the 2011-2013 Jeep Grand Cherokee Early 3.6L Pentastar Left Cylinder Head Valve Seat/Guide Wear Causing Misfires (Warranty Extension X56 / TSB 09-002-14)?
Early (2011-2013) 3.6L Pentastar engines have a defective left-bank cylinder head with excessive valve seat/guide wear, attributed to incompatible head materials. The wear causes leak-down and misfires concentrated on the left bank — cylinders 2, 4, and 6 — often with a ticking v… Repairs typically run $0-$2,500. Severity: high.
What is the 2014-2020 Jeep Grand Cherokee 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage?
The integrated engine oil cooler/oil-filter housing on the 3.0L EcoDiesel develops internal failures that let engine oil and coolant cross-contaminate — owners report 'milkshake' oil and oil in the coolant bottle. Casting debris left in the engine can become trapped in the cooler… Repairs typically run $500-$4,000. Severity: high.
What is the 2018-2024 Jeep Grand Cherokee 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick?
The updated/'Upgrade' 3.6L Pentastar V6 (used on later WK2 and the WL fifth-gen) suffers premature wear of the intake rocker-arm roller bearings and/or intake camshaft lobes, traced by TSB to a manufacturing issue. As the rocker bearing or cam lobe wears, the valve no longer open… Repairs typically run $600-$3,500. Severity: high.
What is the 1999-2004 Jeep Grand Cherokee 4.7L V8 Crankshaft Position Sensor Failure Causing Hot-Restart No-Start and Random Stalling?
The crankshaft position sensor (CKP) on the 4.7L (and 4.0L) Grand Cherokee commonly fails from heat-soak: it works when cold but its internal resistance rises when hot, so the PCM loses the crank signal and the engine won't restart until it cools 30-60 minutes, or it stalls rando… Repairs typically run $80-$350. Severity: high.
What is the 2011-2013 Jeep Grand Cherokee Early 3.6L Pentastar Left Cylinder Head Failure — Overheated Valve Seat Causing Ticking, Misfire and Check Engine Light (Warranty Extension X56)?
On early 3.6L Pentastar V6 engines, the LEFT cylinder head (cylinders 2-4-6) is prone to premature failure. Premature wear of the exhaust valve seats and guides (attributed to improper material/hardening) causes valve-seat recession, producing a tell-tale tick, misfires on the le… Repairs typically run $0-$4,000. Severity: high.
What is the 2023-2025 Jeep Grand Cherokee 4xe 2.0L Turbo Engine Sand-Casting Debris Causing Catastrophic Failure, Loss of Propulsion or Fire (Recall 25V766 / Campaign 78C)?
Jeep recalled 36,840 Grand Cherokee 4xe units (plus 76,019 Wrangler 4xe) built with 2.0L turbo-four engines whose blocks were contaminated with sand during the casting process. A supplier failed to adequately clean engines after casting between June 2023 and March 2024, leaving a… Repairs typically run $0-$0. Severity: high.
What is the 2022-2024 Jeep Grand Cherokee Second-Row Seat Side Airbag Connector/Occupant Restraint Fault Warnings?
Owners of WL-generation Grand Cherokee models have reported persistent airbag warning lights and restraint system messages tied to seat wiring/connectors, especially around second-row or seat-mounted side airbag circuits. FCA also issued safety actions/TSB guidance on certain res… Repairs typically run $150-$1,200. Severity: high.
What is the 2014-2015 Jeep Grand Cherokee Monostable Electronic Shifter Rollaway (Recall 16V-240)?
The 2014-2015 Grand Cherokee uses a ZF monostable electronic 'E-shift' gear selector that always returns to a center position regardless of selected gear, giving poor tactile/visual feedback. NHTSA tied it to over 300 rollaway incidents and 117 crashes after drivers believed they… Repairs typically run $0-$0. Severity: high.
What is the 2021-2024 Jeep Grand Cherokee Loss of Steering Control: Upper Control Arm Pinch Bolt & Intermediate Shaft (Recalls 23V-352, 24V-131)?
On the new WL-generation Grand Cherokee and Grand Cherokee L, two assembly defects can cause loss of steering control. Upper control arm (UCA) pinch bolts damaged during assembly can break and let the UCA separate from the steering knuckle, dropping the wheel outboard. Separately… Repairs typically run $0-$0. Severity: high.
What is the 2022-2024 Jeep Grand Cherokee Rear Coil Spring Separation/Collapse Causing Tire Contact and Loss of Stability?
Multiple 2022-2024 Grand Cherokee and Grand Cherokee L vehicles were recalled for rear coil springs that may not have been installed correctly, allowing the spring to detach from its upper mount. Owners reported a loud bang from the rear, sudden sagging ride height, and in some c… Repairs typically run $400-$1,800. Severity: high.
What is the 2022-2026 Jeep Grand Cherokee 4xe High-Voltage Battery Cell Separator Defect Causing Fire Risk While Parked or Driving (Recall 25V576 / Park-Outside Campaign)?
Stellantis recalled an estimated 320,065 Jeep 4xe plug-in hybrids — covering 2022-2026 Grand Cherokee 4xe (and 2020-2025 Wrangler 4xe) — because the high-voltage lithium-ion battery pack may contain cells with internal separator damage. Combined with other internal chemical/therm… Repairs typically run $0-$0. Severity: high.
What is the 2005-2007 Jeep Grand Cherokee Ignition Switch / Lock Cylinder Wear Causing Key Stuck and Unexpected Engine Shut-Off (Recall P41 / NHTSA 14V-438, 2005-2007 WK)?
On 2005-2007 (WK) Grand Cherokees, wear inside the ignition switch/lock cylinder can allow the key to be jarred out of the RUN position — by a knee, a heavy key ring, or a rough road — which shuts off the engine and can disable power steering, power brake assist, and the airbags… Repairs typically run $0-$400. Severity: high.
What is the 2014-2023 Jeep Grand Cherokee 3.0L EcoDiesel Bosch CP4 High-Pressure Fuel Pump Failure Sending Metal Debris Through Fuel System (Recall Z46)?
The Bosch CP4.2 high-pressure fuel pump on 3.0L EcoDiesel Grand Cherokees can fail catastrophically and grind metal debris into the fuel rails, lines, and injectors. Because the contamination spreads before symptoms appear, a single pump failure often ruins most of the high-press… Repairs typically run $0-$6,000. Severity: high.
What is the 1994-2004 Jeep Grand Cherokee Rear-Mounted Fuel Tank Rupture and Fire Risk in Rear Impacts (Recall 13V-252 / Campaign N45)?
For the ZJ (1993-1998) and WJ (1999-2004) Grand Cherokee, Chrysler mounted the plastic fuel tank behind the rear axle with little rear-structure protection. NHTSA and the Center for Auto Safety documented that these vehicles were far more likely to suffer a fatal post-crash fire… Repairs typically run $0-$0. Severity: high.
What is the 1999-2004 Jeep Grand Cherokee 4.0L Inline-6 Cylinder Head (Casting #0331) Cracks Between Cylinders #3 and #4 Causing Coolant Loss, Misfire and No Heat?
The 4.0L cylinder head cast with number '0331' (used on 1999-2004 Grand Cherokees, and 2000-2001 Cherokee XJ) was redesigned with larger intake/exhaust ports but left the wall between the #3 and #4 valve springs too thin. Under thermal cycling the head cracks in that region, lett… Repairs typically run $1,200-$2,800. Severity: high.
What is the 1999-2004 Jeep Grand Cherokee Internal Radiator Transmission-Cooler Failure Cross-Contaminating ATF and Coolant ('Pink Milkshake')?
On the WJ the automatic-transmission fluid cooler is integrated inside the radiator end tank. As the radiator ages the internal cooler barrier fails, allowing engine coolant and ATF to intermix under pressure. The result is a pink/tan 'strawberry milkshake' in both the transmissi… Repairs typically run $400-$1,800. Severity: high.
What is the 2011-2014 Jeep Grand Cherokee Sudden Alternator Failure Causing Stall / Fire Risk (Recalls 14V-634, 17V-435)?
Grand Cherokees with electro-hydraulic power steering subject the alternator to cyclical electrical loads that cause thermal failure of the internal diodes. The alternator can fail suddenly, stalling the vehicle without warning and, in some cases, short-circuiting and causing an… Repairs typically run $0-$700. Severity: high.
