According to Au7o's analysis of 3,920+ owner reports, the 2018 Jeep Grand Cherokee has 38 documented known issues, with 7 rated critical. The most serious are 2011-2021 5.7L Persistent Tick or Misfire - Confirm Valvetrain Damage Before Parts, 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699) ($0-$0 repair), 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick ($600-$3,500 repair), 2014-2020 Grand Cherokee EcoDiesel High-Pressure Fuel Pump Recall (Z46 / 22V-406) ($0-$0 repair), 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage ($500-$4,000 repair), Recall 18V524000 (U87) — PCM Circuit-Board Voltage Regulator Can Fail, Causing a Stall and Cruise Control That Will Not Shut Off — Wiring Short Circuit Recall (18V332000). The most commonly reported issue is with 920 owner reports.
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.
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What are the most common Jeep Grand Cherokee problems?
According to Au7o's analysis of 3,920+ owner reports, the 2018 Jeep Grand Cherokee has 38 documented issues. The most frequently reported are: 2011-2021 5.7L Persistent Tick or Misfire - Confirm Valvetrain Damage Before Parts, 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699), 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick. Of these, 7 are rated critical and should be addressed promptly.
Is the Jeep Grand Cherokee reliable?
The 2018 Jeep Grand Cherokee has 38 known issues documented across 3,920+ owner reports. 7 issues are rated critical: 2011-2021 5.7L Persistent Tick or Misfire - Confirm Valvetrain Damage Before Parts and 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699) and 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick and 2014-2020 Grand Cherokee EcoDiesel High-Pressure Fuel Pump Recall (Z46 / 22V-406) and 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage and Recall 18V524000 (U87) — PCM Circuit-Board Voltage Regulator Can Fail, Causing a Stall and Cruise Control That Will Not Shut Off — Wiring Short Circuit Recall (18V332000). 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.
How much does it cost to fix common Jeep Grand Cherokee problems?
Repair costs for known Jeep Grand Cherokee issues range from $0 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2011-2021 Jeep Grand Cherokee 2011-2021 5.7L Persistent Tick or Misfire - Confirm Valvetrain Damage Before Parts?
A persistent tick and cylinder misfire on a 5.7L Grand Cherokee can be consistent with valvetrain damage, but those symptoms do not identify a failed MDS lifter or worn camshaft by themselves. Exhaust-manifold leaks, ignition or injector faults, oil-pressure problems, rocker/push… Severity: high.
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.
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On the 2011-2021 Jeep Grand Cherokee 5.7L HEMI V8 with MDS/VVT, a persistent tick and cylinder misfire on a 5.7L Grand Cherokee can be consistent with valvetrain damage, but those symptoms do not identify a failed MDS lifter or worn camshaft by themselves. Exhaust-manifold leaks, ignition or injector faults, oil-pressure problems, rocker/pushrod faults, compression loss, and other mechanical conditions can overlap. FCA has published a cam/lifter inspection note for certain 5.7L MDS police Charger, Durango, and Ram 1500 vehicles, but that document does not establish the prior card's blanket Grand Cherokee year, mileage, DTC, or part-set claims.
Persistent engine-speed tick that remains after warm-up
Cylinder-specific or random misfire
Rough running or reduced power
Abnormal rocker motion or confirmed cam-lobe/lifter-roller damage
Metal debris found during oil-filter inspection
How to Fix
Record the exact DTCs and freeze-frame data, verify oil level and mechanical oil pressure, and identify whether the sound is from the exhaust manifold or inside the valvetrain. Diagnose ignition and injector causes for the affected cylinder, then perform factory compression and cylinder-leakage testing as indicated. If the evidence remains mechanical, inspect rocker motion, pushrods, lifter rollers, and cam lobes using service information for the exact VIN and engine build. Only after lifter or cam damage is physically confirmed should a technician select the correct mix of deactivating and standard lifters, yokes, camshaft, gaskets, torque-to-yield fasteners, and any contamination-related work. Stop driving and obtain professional diagnosis if the oil-pressure warning appears, the malfunction lamp flashes, severe misfire develops, or metal is found in the oil/filter.
Owner tips & cautions
WarningDo not buy a camshaft or lifter kit from a tick, a generic misfire code, or the old card's part list. The correct repair depends on physical inspection and the VIN-specific MDS valvetrain configuration.
TipRule out the exhaust-manifold cold-tick condition first. FCA has a separate crack-inspection path and updated manifold kits for covered 2019-2022 5.7L vehicles.
On the 2014-2019 Jeep Grand Cherokee 3.0L EcoDiesel V6, certain 2014-2019 Jeep Grand Cherokee vehicles with the 3.0L EcoDiesel engine are included in safety recall W79 / NHTSA 20V-699. NHTSA lists 28,884 potentially involved Jeep vehicles. Thermal fatigue can cause the EGR cooler to crack internally over time, allowing pre-heated vaporized coolant into the EGR system; under some conditions the mixture can combust inside the intake manifold and lead to a vehicle fire. Recall inclusion is VIN-specific. The prior card overstated the Jeep population as 34,334, attached unsupported generic EGR codes, and offered OEM, aftermarket, manifold, and gasket purchases even though the recall repair is free and inspection-dependent.
Common Symptoms
Coolant level is consistently low
Malfunction indicator lamp may be illuminated
Evidence of intake-manifold damage when the FCA inspection criteria are met
How to Fix
Check the VIN for open recall W79 and schedule the free repair with an authorized Jeep dealer. FCA's procedure replaces the EGR cooler using campaign parts. If the malfunction indicator lamp is illuminated, the dealer checks for P0299 and P2D2F; when either is present, the intake manifold is inspected and leak-tested and is replaced only if perforation is confirmed. Monitor the coolant level as FCA advises and contact the dealer if it is consistently low. If there is smoke, a burning smell, visible fire, or rapid coolant loss, stop safely, shut the engine off, move occupants away, and seek emergency/towing assistance. Do not buy an EGR cooler, manifold, aftermarket cooler, or gasket bundle in place of the VIN-specific recall remedy.
Owner tips & cautions
WarningDo not substitute an aftermarket EGR cooler for an open safety recall. Confirm W79 by VIN and use the free dealer remedy.
TipThe intake manifold is not an automatic add-on. FCA calls for inspection and leak testing when P0299 or P2D2F is present, with replacement only if perforation is found.
WarningThe corrected Jeep population is 28,884 potentially involved vehicles; 34,334 was not the Jeep-only total in NHTSA's report.
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.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar right intake-camshaft service kit
OEMMopar 68661147AB
Complete FCA bulletin repair after right-bank intake high-lift lobe/rocker wear is confirmed Fitment/availability: 68661147AB supersedes 68661147AA and is the right-side kit named in TSB 09-011-25. Confirm VIN, ERC/ERG sales code, build/…
Complete FCA bulletin repair after left-bank intake high-lift lobe/rocker wear is confirmed Fitment/availability: 68661146AA is the left-side kit named in TSB 09-011-25. Confirm VIN, ERC/ERG sales code, build/mileage scope and left-bank …
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Owner tips & cautions
WarningDo not order a camshaft kit from a misfire code alone. FCA says the symptom may be related to cam/rocker wear, so the high-lift lobe and slider on the indicated bank must be inspected first.
TipConfirm right versus left bank before ordering. FCA provides two different complete kits, and each already includes the camshaft, rocker arms, sealer, and gaskets for that side.
WarningThe WL bulletin scope ends at the August 19, 2024 build cutoff even though model-year coverage extends through 2025. Verify the VIN/build record and ERC or ERG sales code.
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.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
WIX GEN-2 3.0L EcoDiesel engine-oil filter element
OEMWIX WL10060 / Mopar 68229402AA
Routine oil-filter replacement in the original GEN-2 housing on a confirmed 2014-2019 Grand Cherokee 3.0L EcoDiesel Fitment/availability: WIX WL10060 cross-references Mopar 68229402AA and the live listing names the 2014-2019 Grand Cherok…
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Owner tips & cautions
WarningDo not buy an oil cooler from the old card. The reviewed FCA bulletin documents a filter-generation mismatch risk, not the old casting-debris and universal cross-contamination claim.
WarningThe linked filter is for the original 2014-2019 GEN-2 3.0L application. Never substitute the newer GEN-3 cap-and-element design because the cartridges look similar.
On the 2012-2021 Jeep Grand Cherokee 3.6L Pentastar V6, oil found around the Pentastar oil filter adapter does not prove that the complete adapter or oil cooler has cracked. FCA's service guidance separates several repair paths: a cap O-ring that is cut, damaged, or installed in the wrong groove; five adapter bolts that are not at the specified torque; and a confirmed leak at the adapter-to-block O-rings and gaskets. FCA's 2021 guidance tells technicians to reseal a confirmed interface leak rather than replace the adapter on the covered non-2014 vehicles, while model-year 2014 is handled as an adapter-replacement exception. The previous card treated 2011-2020 vehicles alike, prescribed an aluminum assembly, implied oil/coolant cross-contamination, and listed P0128 and P26B7 without reviewed support.
Common Symptoms
Oil visible around the oil-filter cap or adapter
Oil collecting in the engine valley or running down the engine
A leak that reappears in dye tracing at the adapter-to-block interface
How to Fix
Clean the area and add approved oil dye so the source can be observed before parts are ordered. Inspect the oil-filter-cap O-ring for damage and confirm it is seated in the correct groove. Check the five oil-filter-adapter bolts against FCA's 12 N-m specification and document any under-torque condition. If dye confirms a leak at the adapter-to-block interface, follow the current VIN- and model-year-specific FCA service information: the cited guidance calls for O-ring/gasket kit 68191356A$ rather than a complete adapter on covered vehicles other than model year 2014, and calls for adapter replacement on model year 2014. Transfer sensors only when the applicable replacement procedure requires it. Verify the exact suffix and current part by VIN before ordering. Do not buy a housing, cooler, seal kit, or aluminum conversion until the leak source and installed housing are confirmed.
Owner tips & cautions
TipAsk the shop to show the dye-confirmed source: cap O-ring, adapter bolts, or the adapter-to-block interface. Those paths do not all require the same part.
WarningDo not authorize a complete housing from oil in the valley alone. FCA specifically directs seal-only repair for a confirmed interface leak on covered non-2014 vehicles.
WarningModel year 2014 is an exception in FCA's cited guidance. Confirm the VIN, model year, leak source, and current part suffix before ordering anything.
On the 2011-2022 Jeep Grand Cherokee, the electronic-throttle-control warning lamp and reduced-power or limp mode are protective responses, not a diagnosis that the throttle body has failed. Depending on the stored DTC and application, the factory path may lead to a stuck or contaminated throttle plate, throttle motor or position-sensor response, accelerator-pedal sensors, a five-volt supply fault, damaged wiring or terminals, or a PCM issue. The old card's thermostat shopping claim is not part of the cited ETC diagnostic path, and a throttle body should not be ordered from the warning lamp alone.
Common Symptoms
Electronic throttle control warning lamp
Reduced engine output, limited RPM, or limp mode
Poor or absent accelerator response
One or more throttle, pedal, voltage-supply, or actuator DTCs
How to Fix
Before clearing anything, record every PCM DTC, pending code, freeze-frame value, battery voltage, temperature, and the exact conditions under which reduced power occurred. Diagnose prerequisite five-volt-supply, throttle-position, accelerator-pedal, or other active faults in the order specified by the current factory procedure for that VIN and engine. For a P2111-style fault, inspect the throttle plate for binding or foreign material and run the scan-tool throttle-follower test, then test the motor circuits, connector terminals, and wiring as directed. For a pedal-correlation code such as P2138, follow the accelerator-pedal sensor and circuit procedure instead. Replace and relearn a throttle body only when the applicable test condemns it; do not buy a thermostat as an ETC rule-out part.
Owner tips & cautions
WarningAn ETC lamp does not prove the throttle body failed. Save the codes and freeze-frame data before clearing them or disconnecting the battery.
TipAsk the shop to name the exact DTC and the failed factory test step before approving any throttle-body, pedal, wiring, or PCM part.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar engine-oil filter for the original 2011-2013 3.6L adapter
OEMMopar 68079744AD
Routine oil-filter service on a confirmed original-design 2011-2013 Grand Cherokee 3.6L housing Fitment/availability: 68079744AD supersedes 68079744AC/AA/AB and is cataloged for the 2011-2013 Grand Cherokee 3.6L.
Genuine Mopar engine-oil filter for the changed original 2014 3.6L adapter
OEMMopar 68191349AA / 68191349AB / 68191349AC
Routine oil-filter service on a confirmed original-design 2014 Grand Cherokee 3.6L housing Fitment/availability: 68191349AA is the filter identified by FCA for the changed 2014 design and has later AB/AC supersessions. It is not intercha…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
WarningThe 2011-2013 and 2014 filters are not interchangeable. The two product links are intentionally separated by model year and original factory housing.
WarningAn aftermarket aluminum housing can change the required filter. Identify that housing and follow its own application instructions instead of ordering from the vehicle year alone.
TipCompare the new element and supplied O-ring with the parts removed before installation; use only the seal included with the correct filter.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar left-side engine mount isolator for the 3.6L V6 WK2 branch
OEMMopar 68252518AB
Replacement after inspection confirms the left V6 mount has leaked, separated or developed excessive movement Fitment/availability: 68252518AB replaces 68252518AA/68110950AA-AC/52124671AF and is described as the left-side all-V6 mount. U…
Genuine Mopar engine mount isolator for the 5.7L V8 WK2 branch
OEMMopar 68252522AA / 68252522AB
Replacement after inspection confirms the applicable 5.7L mount has failed Fitment/availability: 68252522AA is replaced by AB and the live OEM catalog lists 2016-2021 Grand Cherokee 5.7L applications. Confirm VIN, mount position and curr…
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.
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 owner 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.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar engine oil-pressure sensor for FCA P0520 service action
OEMMopar 05149062AA
Confirm VIN, ERB engine, MDH cutoff and P0520; it is not an oil-pan, rear-main-seal or oil-filter-adapter leak repair.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
WarningP0520 is a sensor-circuit code. Do not describe it as proof of an oil leak or actual low mechanical oil pressure without the required diagnosis.
TipConfirm the March 12, 2014 build cutoff and exact DTC before ordering. The FCA service action is narrower than the old 2011-2021 card.
WarningThe linked sensor is the exact 05149062AA named by FCA. The required intake seals are listed without retailer links until exact product pages and current VIN supersessions are verified.
On the 2018 Jeep Grand Cherokee, the 2018 Grand Cherokee is one of the vehicles named in NHTSA recall 18V524000. The defect sits inside the powertrain control module: a voltage regulator chip on the module's circuit board may fail. The failure shows up in one of two ways — the Grand Cherokee stalls while it is being driven, or it will not start. NHTSA filed the campaign under the front underhood electrical wiring component and states plainly that a stall raises crash risk. Chrysler tracks the campaign internally as number U87.
Common Symptoms
Stalling while driving
No-start condition
How to Fix
Dealers replace the powertrain control module at no charge to the owner. Notification of owners started October 2, 2018. Because this is a free safety recall with no mileage or time limit, a 2018 Grand Cherokee that never had the work done is still entitled to it — check the VIN at nhtsa.gov/recalls to see whether U87 remains open, then schedule the module replacement with a Jeep dealer. Chrysler customer service: 1-800-853-1403.
On the 2014-2018 Jeep Grand Cherokee, recall 18V332000 covers 2014-2018 Jeep Grand Cherokee models among a long list of FCA vehicles. The defect is in the cruise control system: a short circuit in the vehicle's wiring can leave the cruise control unable to be disengaged once it has been set. According to NHTSA, the driver may find that neither depressing the brake pedal nor manually turning the system off will cancel it, and the Grand Cherokee will either continue at its current speed or possibly accelerate. NHTSA lists the consequence as an increased risk of a crash. This is a wiring/software fault, not a mechanical throttle problem, and the remedy is a control-module reflash rather than a parts replacement.
Common Symptoms
Cruise control stays engaged after the brake pedal is pressed
Cruise control switch will not turn the system off
Vehicle holds speed or accelerates with cruise control active
How to Fix
Correction is free of charge at a Jeep dealer. The dealer inspects the software and flashes the engine or powertrain control module. Notification to owners began June 4, 2018. Look up your VIN at nhtsa.gov/recalls to see whether your Grand Cherokee is included and whether the flash has been completed; used-vehicle buyers should check even on a truck that has changed hands. Chrysler customer service can be reached at 1-800-853-1403. Do not use cruise control until the update is performed. If it will not disengage on the road, brake firmly and steadily, shift to neutral, and select park once stopped.
On the 2014-2018 Jeep Grand Cherokee, uconnect resets or a blank screen, intermittent accessories, a discharged battery, and communication faults may occur together, but they do not establish that the Body Control Module is defective. Radio software or hardware, a weak battery or charging problem, poor power or ground, damaged CAN wiring or terminals, another module that will not sleep, and a true internal module fault can overlap. FCA has a software bulletin for specific early 2014 WK vehicles with RA3/RA4 radios, including radio resets and radio-caused battery drain, but that bulletin is sales-code and build-date specific and does not justify replacing a BCM, Intelligent Battery Sensor, or battery on every 2014-2018 vehicle.
Uconnect radio resets, locks up, goes blank, or responds slowly
Intermittent accessory or warning-lamp behavior
Battery is discharged after the vehicle sits
One or more modules store lost-communication faults
How to Fix
Start with a complete vehicle scan and save active, stored, and environmental data before clearing anything. Load-test the battery, verify charging voltage, and repair low-voltage faults first. Inspect the relevant fuses, power feeds, grounds, connectors, and CAN wiring, then measure key-off draw only after the vehicle has completed its normal sleep period and isolate the circuit that remains awake. For radio resets, identify the exact radio sales code and vehicle build date and check the VIN for the applicable FCA software or radio procedure. For a lost-communication fault, determine whether the named module is actually offline, whether multiple modules logged against it, and whether its power, ground, and network circuits pass before condemning it. Replace and VIN-configure a BCM, radio, IBS, or battery only when the component-specific test proves it failed.
Owner tips & cautions
WarningU0140 means communication with the BCM was lost; it does not prove the BCM itself failed. Voltage, power, ground, wiring, network, and reporting-module faults must be separated first.
TipAsk the shop to show the sleep-current measurement, the circuit that stayed awake, and the network scan before authorizing an expensive programmed module.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Early-system touchscreen replacement after physical touch-layer failure is confirmed Fitment/availability: For specified 2014-2017 Grand Cherokee VP3/VP4 Uconnect 3C radios with visible DJ084NA-01A screen identification.
Later-system LCD/touch assembly after physical delamination or panel failure is confirmed Fitment/availability: For Uconnect 4/4C UAQ/UAS radios whose removed screen label matches LA084X01 SL01, SL02 or SL03. Confirm the label rather tha…
High Confidence820 owner 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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
DieHard Platinum AUX14 AGM auxiliary ESS battery
OEMDieHard AUX14-1
Replacement for a failed auxiliary battery in a verified AUX14-equipped dual-battery ESS configuration Fitment/availability: AUX14, 12 V, 14 Ah and 200 CCA AGM. Match the installed auxiliary battery dimensions, terminals, label and VIN; …
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Philips Xenon Standard D3S factory-HID headlight bulb
OEMPhilips 42403C1
Replacement for a confirmed failed or materially aged D3S bulb in a factory-HID headlamp Fitment/availability: Philips 42403C1 is D3S, 42 V, 35 W and 4300 K.
On the 2014-2020 Jeep Grand Cherokee 3.0L EcoDiesel V6 (sales codes EXF and EXN), certain 2014-2020 Jeep Grand Cherokee (WK) vehicles with the 3.0L diesel engine are included in safety recall Z46 / NHTSA 22V-406. The high-pressure fuel pump can fail prematurely and introduce internal debris into the fuel system, causing fuel starvation. FCA says occupants may notice a malfunction indicator lamp, a fuel leak, abnormal engine noise, or a change in drive quality; fuel starvation can cause an unexpected loss of motive power and increase crash risk. Recall inclusion is VIN-specific. The prior card incorrectly included 2021-2023 vehicles and treated an old pump number plus a retail injector set and filters as a universal repair.
Change in drive quality or a non-running condition
How to Fix
Check the VIN for open recall Z46 and schedule the free repair with an authorized Jeep dealer. FCA's procedure is condition-dependent: a vehicle delivered in good running condition receives the campaign HPFP and associated non-contaminated-system service, while a non-running vehicle is diagnosed for pump failure and, when contamination is confirmed, receives the pump, in-tank modules, filters, injectors, rails, high-pressure tubes, fuel-system cleaning, and other campaign items specified for that vehicle. If the vehicle stalls, loses power, leaks fuel, or will not restart, move it to a safe location, shut it off, and arrange a tow rather than continuing to run the engine. Do not buy a retail CP4 pump, injector set, or filter bundle before VIN eligibility and contamination status are established.
Owner tips & cautions
WarningRecall eligibility is VIN-specific. Do not assume every 2014-2020 EcoDiesel is included, and do not extend this card to 2021-2023 vehicles.
WarningDo not order the old 68211269AA pump or a universal injector/filter bundle as the recall fix. FCA's dealer kits and component scope change depending on whether pump failure and contamination are present.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar complete upper-and-lower intake-manifold gasket kit for the 3.6L branch
OEMMopar 68535427AA
Seal replacement after smoke testing confirms leakage at a compatible 3.6L intake-manifold joint Fitment/availability: Mopar 68535427AA is sold as a 12-piece kit containing six upper and six lower seals and is cataloged for the audited 2…
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.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar fuel tank filler tube for ERC/EZH bulletin branch
OEMMopar 68377769AE
The TSB's engine-code and year branch controls; verify VIN/current supersession.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
WarningDo not order by the symptom alone. FCA requires the other hard-to-fill diagnostics first, and the correct tube changes with engine sales code and model year.
TipHave the seller or installer verify the VIN, engine sales code, and current Mopar supersession before the order is placed.
On the 2011-2021 Jeep Grand Cherokee, quadra-Lift is a closed, electronically controlled air-suspension system, so a Service Air Suspension message, a low corner, or a denied height change does not identify one universal failed part. The factory diagnostic path covers electrical and communication faults, fuses and voltage, pinched or damaged lines, leaking springs, disconnected sensor linkages, water or blockage in the compressor intake, air-mass loss, valve/compressor faults, software, and the Air Suspension Control Module. The prior card also incorrectly treated SRT and Trackhawk as automatic Quadra-Lift applications; applicability should be established by sales code SER or the vehicle build sheet.
Common Symptoms
Service Air Suspension message
One corner or one axle sits low
Ride-height change is slow, denied, or inoperative
Quadra-Lift height indicators flash or normal leveling is disabled
How to Fix
Confirm the vehicle is equipped with Quadra-Lift sales code SER, record the exact ASCM DTCs and environmental data, and check VIN/build-date-specific FCA bulletins before ordering hardware. Follow the factory sequence: repair voltage or communication faults first; inspect fuses, air lines, springs, height-sensor linkages, compressor intake/filter, and visible plumbing; then use a capable scan tool to run the Air Mass and Air Ride Height routines and follow the DTC-specific tree. On 2011-2012 vehicles built before May 1, 2012, U0415-00 or C159E-15 with a Service Air Suspension message may be addressed by FCA TSB 08-034-12's ASCM software update. Replace only the component proven failed. A completely depleted system requires the specified refill equipment, scan-tool procedure, and purity-class-5 nitrogen; do not fill it with ordinary shop air or shotgun-replace springs, sensors, and the compressor.
Owner tips & cautions
WarningDo not replace a compressor because the vehicle sits low. A leaking spring or line, sensor/linkage fault, intake restriction, valve fault, low system air mass, or software condition can create overlapping symptoms and can overwork a replacement compressor.
TipAsk the shop to record the ASCM DTCs, air-mass result, ride-height routine result, and verified leak location. Those findings should select the part, not a generic model-level shopping list.
High ConfidenceVerified920 owner reportsLast reported by owners Feb 2024Reviewed Jul 2026
On the 2011-2021 Jeep Grand Cherokee, a WK2 front-end clunk over bumps, during braking, or while steering can come from more than the sway-bar links or lower control arms named in the old card. The source can vary with loading and may involve a stabilizer link or bushing, control-arm bushing, ball joint, tie-rod end, shock or upper mount, wheel bearing, loose fastener, brake hardware, or another nearby component. Standard and high-performance suspension packages also use different side-specific parts. Ordering four components from the noise alone risks replacing good parts while leaving a safety-relevant loose joint in service.
Common Symptoms
Clunk or knock from the front over bumps
Noise during braking, acceleration, or steering load changes
Possible looseness, uneven tire wear, or steering change if a joint or bushing is worn
How to Fix
Record when the noise occurs and reproduce it safely on a controlled road test. With the vehicle supported according to the factory procedure, inspect wheel and tire security, brake hardware, steering linkage, stabilizer links and bushings, control-arm bushings, upper and lower ball joints, shocks and mounts, wheel bearings, subframe attachment, and nearby shields or loose hardware. Check joints and bushings in the loaded and unloaded positions specified by the service manual, and use chassis ears or controlled isolation when visual play is not obvious. If steering looseness, wheel movement, instability, or a damaged joint is present, stop driving until repaired. Replace only the confirmed failed component using the VIN, side, suspension sales code, and current supersession; torque at the specified ride-height condition and perform an alignment when the repair procedure requires it.
Owner tips & cautions
WarningDo not assume a sway-bar link or control arm from the sound alone. Steering looseness, wheel movement, or a damaged ball joint requires immediate inspection before more driving.
TipAsk the shop to identify the exact failed joint or bushing, side, and suspension sales code and to show the measured play or isolated noise before parts are ordered.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar complete front hub and bearing assembly
OEMMopar 52124767AE
Confirm VIN/platform and the failed corner; not for a new-body WL.
On the 2018 Jeep Grand Cherokee 6.2L supercharged HEMI V8 (sales code ESD), fCA TSB 18-001-26 covers a 2018 WK Grand Cherokee equipped with the 6.2L supercharged ESD engine and 8HP95 DFS transmission when P0420 and/or P0430 is stored. A customer may also report reduced engine power associated with catalyst damage and restricted exhaust flow. The bulletin identifies PCM software as the cause addressed by its repair procedure. It does not apply to the 3.6L Pentastar population in the old card and does not name an upstream or downstream oxygen sensor as the repair.
Common Symptoms
Malfunction indicator lamp with P0420 and/or P0430
Possible reduced engine power if catalyst damage has restricted exhaust flow
How to Fix
Confirm the vehicle is a covered 2018 WK with engine sales code ESD and transmission sales code DFS, save the DTC and freeze-frame information, and check the VIN and current calibration level. Follow FCA TSB 18-001-26: maintain the specified battery voltage, reprogram the PCM with the latest software using wiTECH or equivalent, and clear DTCs set during programming. If P0420/P0430 returns, exhaust restriction or loss of power remains, or other DTCs are present, continue with the current factory catalyst, fuel-control, misfire, exhaust-leak, and sensor diagnostics for the exact vehicle. Do not buy oxygen sensors or catalytic converters from the code alone.
Owner tips & cautions
WarningDo not use this bulletin on a 3.6L Grand Cherokee. Its exact scope is the 2018 6.2L supercharged ESD/8HP95 DFS application.
TipAsk the shop to record the original calibration, completed flash, cleared DTCs, and post-flash result before any catalyst or sensor purchase is discussed.
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).
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar purge hose for the 3.6L ERB bulletin branch
OEMMopar 68189075AE
A repair after a split hose is confirmed on an in-window 2015 WK 3.6L ERB Fitment/availability: 68189075AE supersedes AC/AD and is cataloged for 2014-2015 Grand Cherokee 3.6L.
Genuine Mopar purge hose for the 5.7L EZH bulletin branch
OEMMopar 68189065AD
A repair after a split hose is confirmed on an in-window 2015 WK 5.7L EZH Fitment/availability: 68189065AD supersedes AB/AC and is cataloged for 2014-2015 Grand Cherokee 5.7L.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
WarningP0455/P0456 does not identify an ESIM, gas cap, canister, or hose by itself. Match the build window and inspect or smoke-test the system before buying a part.
TipUse the VIN and engine sales code to distinguish the 3.6L and 5.7L purge hoses before ordering.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar evaporative-system integrity module (ESIM) for the confirmed 2016-2018 branch
OEMMopar 68505622AA
Confirm the VIN, fuel-system configuration, connector and current part before purchase; it is not approved across the ful
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.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar rear drive-shaft assembly for the 230-mm DR1 branch
OEMMopar 52123627AC (replaces 52123627AA/AB)
Complete-shaft replacement after inspection confirms a non-serviceable joint, tube or balance/runout fault in the exact branch Fitment/availability: The live OEM page supersedes 52123627AA to 52123627AC. Confirm VIN, 3.6L/5.7L applicatio…
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar transfer-case gear motor 68071235AC
OEMMopar 68071235AC
Actuator replacement only after scan data and commanded testing confirm a motor or encoder failure Fitment/availability: Cataloged for 2011-2022 Grand Cherokee applications. Confirm VIN, transfer-case sales code and connector before purc…
Genuine Mopar transfer-case control module 4854747AD
OEMMopar 4854747AD
Control-module replacement only after circuit and network diagnosis condemns the module Fitment/availability: The live catalog limits this part number to specified 2012-2013 applications and requires VIN confirmation. Do not apply it to …
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.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Crown 5184498AI external water pump for early WK2 3.6L
OEMCrown 5184498AI
Early-branch pump replacement after a confirmed external water-pump failure Fitment/availability: The exact page identifies 5184498AI for 2011-2015 WK2 3.6L applications. Confirm VIN, build and current OE supersession; do not infer fit f…
Genuine Mopar 68311108AF external water pump for later WK2 3.6L
OEMMopar 68311108AF
Later-branch pump replacement after a confirmed external water-pump failure Fitment/availability: The live catalog covers 2016-2025 Grand Cherokee 3.6L applications. Confirm VIN, ESS equipment/build and current supersession before purcha…
High Confidence680 owner 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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar integrated thermostat-and-housing assembly for the WK2 3.6L
OEMMopar 5184651AJ (replaces 5184651AH/AI)
Thermostat-housing replacement after temperature-data diagnosis confirms a thermostat or housing fault Fitment/availability: 5184651AH is replaced by 5184651AJ and the live Jeep catalog covers the audited 2011-2021 WK2 3.6L branch. Confi…
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
DENSO A/C condenser for compatible 2005-2010 WK applications
OEMDENSO 477-0800
Condenser replacement after a technician confirms the condenser itself leaks on a matching 2005-2010 WK Fitment/availability: DENSO 477-0800 is catalog-confirmed at an audited 2008 endpoint and the live listing provides 2005-2010 Grand C…
DENSO A/C condenser for compatible 2011-2021 WK/WK2 applications
OEMDENSO 477-0810
Condenser replacement after a technician confirms the condenser itself leaks on a matching 2011-2021 WK/WK2 Fitment/availability: DENSO 477-0810 is catalog-confirmed at audited 2015, 2020 and 2021 endpoints and the live listing supplies …
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
WarningDo not buy a condenser because the A/C is warm or because a recharge leaked down. The exact leak location and any separate control or air-door fault must be proven first.
WarningAvoid stop-leak products. FCA warns they can contaminate the system and damage recovery, evacuation, and charging equipment.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Crown Automotive heater core for 2005-2010 WK
OEMCrown Automotive 5143101AA
Heater-core replacement after the core itself is confirmed leaking or irreversibly restricted on a 2005-2010 WK Fitment/availability: Crown 5143101AA is explicitly sold for 2005-2010 Grand Cherokee WK. Confirm VIN, main/front HVAC config…
Heater-core replacement after the core itself is confirmed leaking or irreversibly restricted on a 2011-2021 WK2 Fitment/availability: 68079484AA is cataloged for 2011-2022 WK/WK2 3.0L diesel, 3.6L, 5.7L, 6.2L and 6.4L and includes screw…
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Rear-left hose replacement after a confirmed crack, kink or failed connection on an early-WK2 panoramic roof Fitment/availability: 68069325AB replaces AA and is the rear driver-side branch for 2011-2013 Grand Cherokee; confirm GWJ panora…
Rear-right hose replacement after a confirmed crack, kink or failed connection on an early-WK2 panoramic roof Fitment/availability: 68069324AB replaces AA and is the rear passenger-side branch for 2011-2013 Grand Cherokee; confirm GWJ pa…
Front-right hose replacement after damage is confirmed in the 2014-2015 branch Fitment/availability: 68243620AA is the passenger-side front hose for cataloged 2014-2015 Grand Cherokee applications and replaces 68175016AB. Confirm roof op…
Rear-left hose replacement after damage is confirmed on the later-WK2 panoramic roof Fitment/availability: 68175021AA is the rear driver-side GWJ branch for cataloged 2014-2021 Grand Cherokee. Confirm panoramic roof code and VIN; GWA sin…
Rear-right hose replacement after damage is confirmed on the later-WK2 panoramic roof Fitment/availability: 68175020AA is the rear passenger-side GWJ branch for cataloged 2014-2021 Grand Cherokee. Confirm panoramic roof code and VIN; GWA…
Front-left hose replacement after damage is confirmed in the 2016-2021 branch Fitment/availability: 68251825AA supersedes to AB and is the driver-side front hose for cataloged 2016-2021 Grand Cherokee. Confirm roof option, side and VIN; …
Front-right hose replacement after damage is confirmed in the 2016-2021 branch Fitment/availability: 68251824AA is the passenger-side front hose for cataloged 2016-2021 Grand Cherokee. Confirm roof option, side and VIN; it is not the 201…
On the 2011-2021 Jeep Grand Cherokee, water found in a WK2 Grand Cherokee cargo well, under the cargo floor, or near a rear pillar is a symptom, not proof that one grommet, weatherstrip, lamp gasket, antenna seal, or roof seam has failed. The factory water-leak procedure warns that water can travel through body cavities and appear far from the true entry point. The old card's shopping list could therefore send an owner to four unrelated products before the leak location was established.
Common Symptoms
Standing water or dampness in the rear cargo area
Wet cargo carpet or insulation after rain or washing
Water track near a rear pillar, liftgate opening, or cargo trim
Musty odor or interior condensation
How to Fix
Dry the accessible area enough to see a new water track, protect affected electrical connectors and modules, and reproduce the conditions under which the leak occurs. Follow the factory water-leak procedure: visually inspect plugs, drains, alignment, seams, seals, and grommets; test one region at a time with an appropriate low-pressure stream or fan spray; remove trim only as needed for safe visual access; and trace the highest fresh water track to its actual entry point. Repair, reseat, or replace only the confirmed failed seal, seam, fastener, drain, weatherstrip, glass bond, lamp seal, or wiring pass-through using the current factory procedure and specified material. Dry wet insulation, inspect exposed terminals for corrosion, and repeat the water test before closing the trim. Do not smear generic RTV across several unconfirmed paths.
Owner tips & cautions
WarningThe puddle location may not be the entry location. Do not buy a grommet, weatherstrip, sealant, or lamp seal until a controlled water test identifies the source.
TipPhotograph the first fresh water track during the test and retest after the repair before reinstalling all wet trim and insulation.
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar 8 & 9 Speed ATF 68218925AB
OEMMopar 68218925AB
Confirm the transmission service information, required quantity and fill-temperature procedure; never substitute ATF+4 or use this as authorization for a flus
Integrated pan/filter replacement for the confirmed 845RE or 850RE branch during a proper service Fitment/availability: Crown catalogs 52854834AB for 2014-2021 WK2 845RE and 2017-2022 850RE applications. Confirm transmission code and VIN…
Integrated pan/filter replacement for the confirmed 8HP70/8HP75 branch during a proper service Fitment/availability: The Jeep catalog associates this pan/filter family with specified 3.0L diesel, 5.7L and 6.4L applications. Confirm VIN a…
High Confidence750 owner reportsLast reported by owners Feb 2024Reviewed Feb 2026
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.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mopar updated left exhaust-manifold kit
OEMMopar 68591586AA
Complete FCA bulletin repair after the left 5.7L manifold is visually confirmed cracked Fitment/availability: 68591586AA is the left WK/WD/WL kit named by TSB 09-019-23. Confirm VIN, EZH/EZC engine, 2019-2022 bulletin scope, side and sea…
Complete FCA bulletin repair after the right 5.7L manifold is visually confirmed cracked Fitment/availability: 68591591AA is the right WK/WD/WL kit named by TSB 09-019-23. Confirm VIN, EZH/EZC engine, 2019-2022 bulletin scope, side and c…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
WarningDo not order a manifold kit from the word 'tick' alone. FCA's procedure requires the cold-noise source and an actual manifold crack to be confirmed first.
TipUse every component in the updated kit. FCA specifically calls for the supplied gasket, new fasteners, heat shield, and tie bar, including the shorter 06510140AA fastener at the right-front position.
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.
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."
What is the 2014-2019 Jeep Grand Cherokee 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699)?
Certain 2014-2019 Jeep Grand Cherokee vehicles with the 3.0L EcoDiesel engine are included in safety recall W79 / NHTSA 20V-699. NHTSA lists 28,884 potentially involved Jeep vehicles. Thermal fatigue can cause the EGR cooler to crack internally over time, allowing pre-heated vapo… Repairs typically run $0-$0. 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 2014-2020 Jeep Grand Cherokee 2014-2020 Grand Cherokee EcoDiesel High-Pressure Fuel Pump Recall (Z46 / 22V-406)?
Certain 2014-2020 Jeep Grand Cherokee (WK) vehicles with the 3.0L diesel engine are included in safety recall Z46 / NHTSA 22V-406. The high-pressure fuel pump can fail prematurely and introduce internal debris into the fuel system, causing fuel starvation. FCA says occupants may… Repairs typically run $0-$0. 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 Jeep Grand Cherokee Recall 18V524000 (U87) — PCM Circuit-Board Voltage Regulator Can Fail, Causing a Stall?
The 2018 Grand Cherokee is one of the vehicles named in NHTSA recall 18V524000. The defect sits inside the powertrain control module: a voltage regulator chip on the module's circuit board may fail. The failure shows up in one of two ways — the Grand Cherokee stalls while it is b… Severity: high.
What is the 2014-2018 Jeep Grand Cherokee Cruise Control That Will Not Shut Off — Wiring Short Circuit Recall (18V332000)?
Recall 18V332000 covers 2014-2018 Jeep Grand Cherokee models among a long list of FCA vehicles. The defect is in the cruise control system: a short circuit in the vehicle's wiring can leave the cruise control unable to be disengaged once it has been set. According to NHTSA, the d… Severity: high.
What is the 2011-2021 Jeep Grand Cherokee 2011-2021 Quadra-Lift Warning or Uneven Ride Height - Diagnose Before Parts?
Quadra-Lift is a closed, electronically controlled air-suspension system, so a Service Air Suspension message, a low corner, or a denied height change does not identify one universal failed part. The factory diagnostic path covers electrical and communication faults, fuses and vo… Severity: medium.
What is the 2014-2021 Jeep Grand Cherokee 8-Speed Transmission Shifting Issues?
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. Repairs typically run $150-$2,500. Severity: medium.
What is the 2011-2021 Jeep Grand Cherokee Water Pump Failure (3.6L Pentastar)?
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. Repairs typically run $800-$1,800. Severity: medium.
What is the 2011-2021 Jeep Grand Cherokee P0171 — System Too Lean (Bank 1) from 3.6L Pentastar Intake Manifold Gasket / Vacuum Leak?
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-a… Repairs typically run $150-$1,000. Severity: medium.
What is the 2011-2021 Jeep Grand Cherokee 5.7L HEMI Exhaust Manifold Bolt/Stud Failure Causing Exhaust Tick and Leak?
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 met… Repairs typically run $300-$1,500. Severity: medium.
What is the 2012-2021 Jeep Grand Cherokee 2012-2021 Grand Cherokee 3.6L Oil Filter Adapter Leak - Identify the Source First?
Oil found around the Pentastar oil filter adapter does not prove that the complete adapter or oil cooler has cracked. FCA's service guidance separates several repair paths: a cap O-ring that is cut, damaged, or installed in the wrong groove; five adapter bolts that are not at the… Severity: medium.
What is the 2018 Jeep Grand Cherokee 2018 Trackhawk P0420/P0430 - Apply TSB 18-001-26 Before Buying Parts?
FCA TSB 18-001-26 covers a 2018 WK Grand Cherokee equipped with the 6.2L supercharged ESD engine and 8HP95 DFS transmission when P0420 and/or P0430 is stored. A customer may also report reduced engine power associated with catalyst damage and restricted exhaust flow. The bulletin… Severity: medium.
What is the 2011-2021 Jeep Grand Cherokee 2011-2021 WK2 Front-End Clunk - Isolate the Failed Joint, Link, Bushing, or Mount?
A WK2 front-end clunk over bumps, during braking, or while steering can come from more than the sway-bar links or lower control arms named in the old card. The source can vary with loading and may involve a stabilizer link or bushing, control-arm bushing, ball joint, tie-rod end,… Severity: medium.
What is the 2011-2022 Jeep Grand Cherokee ETC Warning or Limp Mode - Read the DTC Before Buying a Throttle Body?
The electronic-throttle-control warning lamp and reduced-power or limp mode are protective responses, not a diagnosis that the throttle body has failed. Depending on the stored DTC and application, the factory path may lead to a stuck or contaminated throttle plate, throttle moto… Severity: medium.
What is the 2011-2021 Jeep Grand Cherokee Front/Rear Differential Pinion Seal Leak and Gear Whine (WK2 4x4)?
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… Repairs typically run $150-$900. Severity: medium.
What is the 2011-2023 Jeep Grand Cherokee Panoramic (CommandView) Sunroof Spontaneous Shattering / Explosion While Driving?
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/in… Repairs typically run $800-$2,000. Severity: medium.
What is the 2011-2021 Jeep Grand Cherokee Rear Driveshaft CV Joint / Slip-Yoke Grease Migration Causing Highway-Speed Driveline Vibration (WK2)?
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… Repairs typically run $100-$1,200. Severity: medium.
What is the 2011-2023 Jeep Grand Cherokee 3.6L Pentastar Plastic Oil Filter Housing / Oil-Cooler Assembly Cracks Causing Oil and Coolant Leaks?
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… Repairs typically run $400-$900. Severity: medium.
