According to Au7o's analysis of 3,560+ owner reports, the 2000-2025 GMC Yukon has 21 documented known issues, with 10 rated critical. The most serious are AFM/DOD Lifter Collapse and Valvetrain Failure ($3,500-$8,000 repair), 8L90 8-Speed Torque Converter Shudder ($150-$4,500 repair), 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion, Corroded 7-Way Connector and Poor Trailer Ground Disable Trailer Braking ($20-$350 repair), ABS Turns Itself On at Low Speed — Salt-Belt Recall 05V379 (2000-2002 Yukon), GM Recall 19V645000: EBCM Reprogram for Declining Vacuum Brake Assist, Heated Washer Fluid System Overheats Ground Wire (Recall 08V441), Heated Washer Fluid System Can Catch Fire (Recall 10V240000), 10L80 10-Speed Transmission Harsh Shifting, Shudder and Rear-Wheel Lock-Up and .
SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING: LAMP
General Motors, LLC (GM) is recalling certain 2023 Chevrolet Silverado 1500, GMC Sierra 1500, 2023-2024 Chevrolet Tahoe, Suburban, GMC Yukon, Yukon XL, Cadillac Escalade, and Escalade ESV vehicles. The electronic brake control module software may fail to display a warning light when a loss of brake fluid occurs. As such, these vehicles fail to comply with the requirements of Federal Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."
Campaign #24V67400012/09/2024
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine. The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
Campaign #25V27400024/04/2025
FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
General Motors, LLC (GM) is recalling certain 2021 Cadillac Escalade, 2021, 2023-2024 Chevrolet Tahoe, and 2022 and 2024 GMC Yukon vehicles equipped with a 6-cylinder diesel engine. The original fuel tank may have been replaced with an incorrect fuel tank, which can allow fuel to leak in a rollover crash.
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According to Au7o's analysis of 3,560+ owner reports, the 2000-2025 GMC Yukon has 21 documented issues. The most frequently reported are: AFM/DOD Lifter Collapse and Valvetrain Failure, 8L90 8-Speed Torque Converter Shudder, 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion. Of these, 10 are rated critical and should be addressed promptly.
Is the GMC Yukon reliable?
The 2000-2025 GMC Yukon has 21 known issues documented across 3,560+ owner reports. 10 issues are rated critical: AFM/DOD Lifter Collapse and Valvetrain Failure and 8L90 8-Speed Torque Converter Shudder and 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion and Corroded 7-Way Connector and Poor Trailer Ground Disable Trailer Braking and ABS Turns Itself On at Low Speed — Salt-Belt Recall 05V379 (2000-2002 Yukon) and GM Recall 19V645000: EBCM Reprogram for Declining Vacuum Brake Assist and Heated Washer Fluid System Overheats Ground Wire (Recall 08V441) and Heated Washer Fluid System Can Catch Fire (Recall 10V240000) and 10L80 10-Speed Transmission Harsh Shifting, Shudder and Rear-Wheel Lock-Up and Brake Vacuum Pump Failure Causing Hard Brake Pedal. 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 GMC Yukon problems?
Repair costs for known GMC Yukon issues range from $20 to $8,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, AFM/DOD Lifter Collapse and Valvetrain Failure, typically costs $3,500-$8,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year GMC Yukon is the most reliable?
Reliability varies across model years of the GMC Yukon. 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 2000-2025 GMC Yukon with 21 documented issues documented across 3,560+ owner reports.
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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The Yukon's Integrated Trailer Brake Control system (RPO JL1) is considerably more sensitive to connection quality than the aftermarket brake controllers it replaced. Rather than simply switching current to the trailer when the pedal is pressed, the Trailer Brake Power Control Module (K133) sends a continuous low-level test pulse down trailer brake output circuit 47 — pin 2, the blue wire on the 7-way. The Chassis Control Module (K38), Chassis Control Module Auxiliary (K38A) or Brake System Control Module (K160), depending on model year, reads the response of that pulse to determine whether a trailer is attached, what kind of brakes it has, and whether the circuit is healthy. Because the module is effectively monitoring circuit integrity continuously, ordinary trailer-grade wiring faults that an older controller would have tolerated now register as hard faults. GM's PIT5509-series bulletins spell out the exact mapping between what the driver sees and what the circuit is doing: a 'Check Trailer Wiring' message with no DTC means an open and/or high resistance occurred in circuit 47 during that ignition cycle; a 'Check Trailer Wiring' message with DTC C1114 and no Service Trailer Brake message means a short to ground on circuit 47; and a 'Service Trailer Brake System' message with C1114 means a short to power on circuit 47 or a poor trailer ground. That last combination is the one Yukon owners hit most, and it is usually caused on the trailer side rather than the vehicle side. The usual culprits are a poor or loose connection at the 7-way, a corroded or water-intruded connector on either the Yukon's hitch receiver or the trailer plug, a trailer ground wire bolted to a painted or rusted frame rail instead of bare metal, chafed brake wiring rubbing through against an axle or frame crossmember, or excessive harness length that lets the plug work loose while driving. Salt-belt vehicles and trailers that get dunked at boat ramps are heavily overrepresented. Because a marginal ground can hold up under light braking and fail under load, the fault often shows up mid-trip on a grade, exactly when the trailer brakes matter most. GM is blunt about where the problem usually lies: it notes that most trailers with these wiring issues do not have high standards for wiring, connections, splices and routing compared with automotive practice, which is precisely why a module that continuously monitors circuit integrity trips on them.
'Service Trailer Brake System' message on the Driver Information Center with a trailer connected
'Check Trailer Wiring' message that comes and goes over bumps
Trailer brakes cut out under heavy braking or on a grade
No trailer braking effect regardless of gain setting
Message appears only with one trailer and not with others
Green corrosion or water inside the 7-way connector at the hitch
How to Fix
Work the diagnosis from the cheapest end, because parts-swapping the Yukon's module fixes almost none of these. Step one is to isolate truck from trailer: disconnect the trailer, clear the code, and drive. If C1114 does not return, the Yukon is fine and every dollar you spend on it is wasted. Better still, build the tester GM describes in PIT5509 — a Pollak heavy-duty 7-way RV plug (part 12-706) with 2, 4, 6 or 8 trailer brake magnets (Dexter Axle K71-104-00 or equivalent) wired in parallel between the ground and brake-controller-output (circuit 47) terminals using 12-gauge wire. Wire the magnets in parallel, never in series. GM also offers a trailer simulator tool, P/N EL-52641, that does the same job. Plug it into the Yukon and drive; if the DIC reads 'Trailer Connected,' a scan tool shows the expected 'Trailer Brake Type,' and no C1114 sets, the vehicle's system is proven good and the focus belongs on the trailer wiring or 7-way connector. From there the repair is on the trailer. Pull both 7-way connectors apart and inspect every cavity for green corrosion, bent or spread pins, and water sitting in the shell; clean with contact cleaner and a small brass brush, reseat any spread female terminals, and pack the housing with dielectric grease before reassembly. GM specifically recommends a Pollak HD RV trailer connector, and for 2014-2018 model years notes an updated truck-side connector with a stronger door/cover spring, GM part number 23404450, if the trailer connector is not being retained securely. Next, chase the trailer's ground wire to its termination point, remove it, grind the mounting surface to bright bare metal, add a star washer, torque it down and seal the joint — a poor trailer ground is the documented cause of the 'Service Trailer Brake System' variant of this fault. Then follow the brake wire along the trailer frame looking for chafe points, crushed sections at frame pass-throughs, and butt splices taped rather than sealed, and secure any excessive harness length so the plug cannot bounce loose. A scan tool that reads the CCM/BSCM 'Trailer Brake Control Output Circuit' parameter will report Okay, Short to Ground, Short to Power or Unknown, which narrows the hunt considerably. Expect $20-$60 in parts for a DIY connector-and-ground repair, or $120-$300 at a shop for diagnosis plus a trailer harness repair. Only if the tester itself sets C1114 with the trailer disconnected should you investigate the Yukon's own trailer brake power control module and its wiring. Note that GM states trailer issues are not covered under warranty. Do not tow until this is resolved; when C1114 is latched the trailer brakes can be genuinely disabled.
GMC Yukons from 2000 through 2002 are part of NHTSA recall 05V379000, which addresses unwanted antilock brake system activation. Corrosion is the driving factor: GM stated the condition is more likely in environmentally corrosive areas and limited the recall launch to twenty salt-belt states plus the District of Columbia (Connecticut, Delaware, Illinois, Indiana, Iowa, Maryland, Massachusetts, Maine, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin). For a Yukon driver the practical danger is at low speed — the ABS intervening when it shouldn't lengthens stopping distances during low-speed brake applications, which NHTSA notes could result in a crash. The recall covers a mix of GM pickups and SUVs; 1,353,718 vehicles were affected campaign-wide, not on the Yukon alone. Owner notification began September 22, 2005.
Common Symptoms
Antilock brakes cycling or activating when they are not needed
Increased stopping distance when braking at low speed
How to Fix
Dealers perform the fix at no cost. The procedure: remove the wheel speed sensor, thoroughly clean the sensor's mounting surface on the bearing, apply rust inhibitor to the cleaned surface, grease it, reinstall the sensor, then verify the peak-to-peak output voltage so the wheel speed signal reads within specification. If you have a 2000-2002 Yukon, check the VIN at nhtsa.gov/recalls to see if this campaign is still outstanding. GMC's recall line for this campaign is 1-866-996-9463.
GMC Yukons from 2015 through 2018 fall under NHTSA recall 19V645000. The defect: the amount of vacuum created by the vacuum pump may decrease over time. Less vacuum reaching the brake booster means less brake assist, so the Yukon's pedal grows stiff and the truck's stopping distance stretches out - NHTSA flags this as raising the risk of a crash. Worth distinguishing from an outright vacuum pump failure: this recall is about assist that tapers off as pump output declines, and GM's approved correction is a control-module calibration rather than a pump replacement. The 3,456,719-vehicle figure attached to this campaign is the total across every GM model included in it.
Take the Yukon to a GMC dealer, who will reprogram the Electronic Brake Control Module free of charge - a calibration update, no parts required. Owner notification started October 8, 2019 under GM number N192268490. Verify your VIN at nhtsa.gov/recalls before assuming it was already done, especially on a used Yukon, and call GMC customer service at 1-800-462-8782 or your dealer to set an appointment.
NHTSA campaign 19V645 covers certain 2015-2018 GMC Yukon vehicles. Vacuum-pump output can decrease over time, reducing brake assist, increasing pedal effort and extending stopping distance.
GMC Yukons from the 2007 and 2008 model years that left the factory with the heated wiper washer fluid option are part of GM's 08V441000 recall. A short circuit on the washer fluid heater's printed circuit board can overheat the control-circuit ground wire. GM's stated consequence is that this may cause other electrical features to malfunction, create an odor, or cause smoke, increasing the risk of a fire. Note that Yukons without the heated washer fluid option are not included. The 857,735 units cited apply to the entire multi-brand campaign.
Common Symptoms
Other electrical features malfunctioning
Odor from the vehicle
Smoke
How to Fix
GMC dealers perform the fix at no cost: they install a wire harness with an in-line fuse on the affected circuit. The recall opened on September 12, 2008. On a truck this age, don't assume a previous owner completed it — check the VIN at nhtsa.gov/recalls, and if it is still open, book it with any GMC dealer (GMC customer assistance: 1-866-996-9436).
GMC Yukons from 2007-2009 that were built with the heated washer fluid system (HWFS) are named in NHTSA recall 10V240000. The failure is in the heated washer module itself: a printed circuit board electrical short. GM had already run a 2008 recall that added a fuse to the control circuit harness to blunt the consequences of that short, but new reports of thermal incidents came in on modules that had received the fuse, so the module is now removed outright. NHTSA's stated consequence is that the heated washer module may ignite and cause a fire. The option was not fitted to every Yukon, so verify by VIN rather than by trim.
Common Symptoms
Smoke or burning smell from the underhood area
Fire at the heated washer fluid module
How to Fix
The correction costs the owner nothing. Your GMC dealer permanently disables and removes the heated washer fluid module from the truck and provides an updated owner manual page, inserted into the manual, documenting that the feature has been permanently disabled and removed. The recall opened June 11, 2010. A Yukon that received only the earlier 2008 fuse repair is still eligible for this one. Run the VIN at nhtsa.gov/recalls, or contact GMC at 1-866-996-9463, to confirm the remedy was performed.
The power retractable running boards available on 2015+ Yukon and Yukon XL are a common failure point. The electric motors and gearboxes corrode and seize, especially in salt-belt states. Boards get stuck in the out position (creating a road-clearance hazard and trip risk) or refuse to extend. The wiring harness connections at the running board motors corrode. GM has released multiple updated motor designs, but corrosion in the mechanical linkage pins also causes binding. Repair cost is $800-2,000 per side if both motors fail.
Boards extend but don't fully retract under the truck
How to Fix
Motor replacement (GM 84085689 updated motor). Lubricate pivot points and linkage pins with marine-grade grease annually. Dielectric grease on harness connectors. Some owners disable the system and lock boards in a fixed position to avoid ongoing failures.
High Confidence490 owner reportsLast reported by owners Feb 2026Reviewed Feb 2026
The gauge cluster on 2003-2006 Yukons uses small stepper motors (the factory Switec/Juken X25.168-series) that wear out or jam. The speedometer, tachometer, fuel, or temperature needles twitch, flutter, stick, read wildly inaccurate, or peg at zero or maximum. A stuck or wrong speedometer is a safety and driveability concern and is one of the single most common electrical complaints on the GMT800 platform.
Speedometer or tach needle sticks, jumps, or reads wrong
Needles flutter or bounce erratically
Gauge pegged at zero or maximum
Fuel/temp gauge inaccurate
Needle stuck after key-off
How to Fix
Rebuild the cluster by replacing the failed stepper motors with updated X27.168 motors (a solder/DIY kit runs roughly $30-$60 plus new bulbs), or send the cluster to a specialist repair service (typically $120-$300 with a lifetime warranty). Full cluster replacement is possible but requires reprogramming the odometer/VIN, so a stepper-motor rebuild is the preferred, cheaper fix. Replacing all six motors at once is recommended since they fail in sequence.
The 8-inch MyLink/IntelliLink infotainment touchscreen (RPO IO5/IO6) develops ghost touches where it presses buttons by itself, dead zones that stop responding, and delamination/bubbling where the digitizer separates from the LCD. Because so many K2XX Yukons share this radio, it is one of the most common infotainment failures on the platform, disabling climate, backup-camera overlays, and audio controls that are routed through the screen.
Loss of climate/audio/camera controls routed through the screen
How to Fix
The permanent fix is replacing the failing capacitive touchscreen/digitizer (common service part reference DJ080PA-01A for the 8-inch unit) or sending the HMI/radio control panel to a specialist for a screen/digitizer rebuild - typically far cheaper than a new GM radio. A software update from the dealer can clear intermittent freezes but does not fix a delaminated or ghost-touching panel. Confirm whether the unit is IO5 (no nav) or IO6 (nav) so the correct replacement is used.
The GMC Yukon 5.3L (L83, LC9, LMG) and 6.2L (L94, L86) V8 engines use Active Fuel Management (AFM) cylinder deactivation. The special collapsible AFM lifters on cylinders 1, 4, 6, and 7 fail prematurely, causing misfires, engine ticking, rough idle, and potential catastrophic damage. This is the single most reported mechanical failure on GMT900 (2007-2014) and K2XX (2015-2020) Yukon models. GM issued TSB 18-NA-077 acknowledging the issue. Yukon models used as daily drivers with lots of highway cruising (where AFM activates most) are most susceptible. The VLOM (Valve Lifter Oil Manifold) must also be replaced as it controls oil flow to AFM lifters.
Metal debris in oil (confirmed on drain plug inspection)
Vibration between 30-55 mph during V4 deactivation mode
How to Fix
Replace all 16 lifters, VLOM (GM 12639516), and inspect camshaft lobes. AFM delete kit (Texas Speed or BTR) permanently eliminates the system. Range Technology AFM Disabler RA003B prevents AFM activation as a preventive measure. Change oil every 5,000 miles with Dexos1 Gen 2 full synthetic to protect lifters.
High Confidence1,480 owner reportsLast reported by owners Feb 2026Reviewed Feb 2026
NHTSA campaign 25V274 covers certain 2021-2024 GMC Yukon vehicles with the 6.2L gasoline V8. Manufacturing defects in connecting-rod or crankshaft components can damage the engine and cause engine failure.
Check the VIN with GMC or NHTSA. Dealers inspect and repair or replace the engine as needed. Vehicles that pass receive the specified higher-viscosity oil, oil-fill cap, oil filter and owner-manual update.
The Active Fuel Management (AFM) 5.3L V8 burns oil at an abnormal rate, frequently a quart every 1,500-2,500 miles. The AFM pressure-relief valve in the valley sprays oil onto the cylinder walls when cylinders deactivate; combined with low-tension/coking piston rings and an oil-drawing PCV design, oil is drawn into the combustion chamber and burned. This is distinct from AFM lifter collapse - here the engine consumes oil, fouls plugs, and can run low enough to trigger misfires and low-oil warnings. A class-action settlement covered the LC9 5.3L piston-ring defect.
GM's oil-consumption TSB fix installs updated pistons and rings and an AFM oil-deflector/shield in the valley. Common owner remedies: replace the PCV/updated valve covers, keep the oil topped up, and install an AFM/DOD delete or a catch can to stop the oil spray before ring damage occurs. If rings are already coked, a piston/ring job (or short block) is required. Verify oil-consumption class-action eligibility for affected VINs.
The 8L90 8-speed automatic transmission in 2015-2020 Yukon and Yukon XL suffers from widespread torque converter lock-up clutch shudder at light throttle between 25-50 mph. The clutch friction material degrades and contaminates the transmission fluid, causing the shudder to worsen over time. GM extended warranty coverage to 6 years/100,000 miles under Customer Satisfaction Program 18302. The fluid fix (Mobil 1 Synthetic LV ATF HP, GM 19417577) resolves early-stage cases; advanced cases require torque converter replacement. This is the same issue affecting all K2XX platform full-size GM SUVs and trucks.
Rear wheels may lock if the transmission control valve fails
How to Fix
Check the VIN and engine with GMC or NHTSA. Dealers install new transmission-control-module software; GM provides special coverage for transmissions the software identifies as containing a defective valve.
The mechanical (belt-driven) water pump develops internal bearing and seal wear with age and mileage, then leaks coolant from the weep hole at the front-center of the engine. Left unaddressed the pump can drip DEXCOOL onto the ground, run the cooling system low, and cause overheating. It is a common wear item on the Gen IV/V small-block V8s used across the GMT900 and K2XX Yukon and typically shows up beyond ~90,000-120,000 miles.
Coolant puddle/drip at the front-center of the engine
Coolant seeping from the pump weep hole
Low coolant level / frequent top-offs
Overheating or rising temperature gauge
Whining or grinding from a failing pump bearing
How to Fix
Replace the water pump (ACDelco Professional water pump for the applicable V8) with a new gasket, and refill with GM DEXCOOL. Because the serpentine belt, thermostat, and hoses are already accessed during the job, it is recommended to replace the thermostat and inspect the belt at the same time. Catch the weep-hole leak early to avoid an overheating event and possible head-gasket damage.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Engine Water Pump
Cross-refWPGM-609V
Fitment confirmed against the ShowMeTheParts catalog for this vehicle's year and engine.
A worn or leaking factory thermostat that stays open (plus a failing engine coolant temperature sensor) prevents the engine from reaching normal operating temperature. The ECM interprets the low/erratic reading as a sensor fault and enters a protective fail-safe mode: the electric cooling fans run at full speed continuously, the temperature gauge may drop to zero or read erratically, the A/C compressor may be disabled, and fuel economy suffers. It is a common and well-documented complaint across 2015-2019 5.3L/6.2L trucks and SUVs.
Diagnose whether the thermostat is stuck open or the ECT sensor has drifted. The usual repair is replacing the integrated thermostat housing and the engine coolant temperature sensor (GM Genuine ECT sensor 12608814) together with fresh DEXCOOL. Clearing the codes and confirming the engine reaches ~210F resolves the fans-on-full and disabled-A/C behavior. Address it promptly because the fail-safe also cuts A/C and hurts mileage.
Yukon and Yukon XL models equipped with Autoride (RPO Z55) or electronic suspension feature rear air springs and a compressor that commonly fail between 80,000-130,000 miles. The air spring bags crack from age and temperature cycling, causing the rear of the vehicle to sag overnight. The compressor burns out from running continuously to compensate for air spring leaks. Replacing OEM components and having them fail again is common — many owners convert to passive coil springs. Same system as Chevy Tahoe/Suburban and Escalade.
Rear of vehicle sagging overnight or after sitting
Compressor running continuously
SERVICE RIDE CONTROL or AIR SUSPENSION message
Bouncy or harsh ride quality
One corner lower than others
Compressor fails to raise vehicle
How to Fix
Replace air springs and compressor (Arnott P-2793 compressor). Or install Arnott C-2835 / Strutmasters conversion kit to permanently eliminate air suspension with coil springs plus electronic bypass module. Conversion kits cost $400-700 and eliminate future air suspension failures.
High Confidence720 owner reportsLast reported by owners Feb 2026Reviewed Feb 2026
On Autotrac electronic-shift 4WD Yukons the transfer-case encoder motor and its position sensor/selector switch fail, so the module can no longer confirm the range. The dash 4WD buttons flash, the truck won't shift between 2HI/4HI/4LO or gets stuck in one range, the Service 4WD light comes on, and codes such as C038D 'Range Actuator Position Not Learned' are stored. Worn encoder-motor contacts and corroded connector pins are typical causes.
Grinding/clicking from the transfer case during shift
Neutral indicator won't confirm
How to Fix
Diagnose whether the fault is the encoder motor, the position sensor/selector, or the transfer case control module. Common repairs: replace the transfer-case encoder/shift motor and the two/four-wheel-drive actuator position sensor (GM Genuine 84377721 / 84368196), and repin/repair the corroded connector. After replacement the actuator position must be relearned with a scan tool. Cleaning the dash 4WD switch contacts fixes some no-shift complaints.
The one-piece molded dash pad splits and cracks, most often along the seam above the passenger airbag and over the instrument cluster. Owners attribute it to GM's switch from a multi-piece to a one-piece design with insufficient relief points and over-tightened mounting bolts, combined with heat/UV aging. Beyond the cosmetic damage there is a safety concern that a cracked seam can affect passenger-airbag deployment. A multi-state class action was filed in 2018 (E.D. Michigan); NHTSA declined a formal recall.
The permanent fix is replacing the upper dash pad/instrument-panel trim pad (dealer quotes commonly around $1,500-$1,800 installed). Budget alternatives include a molded ABS dash cap/overlay bonded over the cracked pad or a carpeted dash cover. Parking in shade and using a windshield sunshade slows further cracking. There is no factory recall, so repair is owner-paid unless covered by an extended warranty.
The small electric blend-door actuators that control temperature and air-flow direction strip their internal plastic gears, producing a repetitive tapping/clicking noise from behind the radio or glovebox and causing the HVAC to blow the wrong temperature (e.g., stuck cold on the passenger side) or fail to change modes. It is one of the most common comfort complaints on the GMT900 Yukon and often affects more than one of the several actuators over the vehicle's life.
Repetitive clicking/tapping behind the dash or glovebox
One side blows hot while the other blows cold
Air won't switch between vents/floor/defrost
Temperature setting doesn't change actual output
How to Fix
Replace the failed actuator with a GM Original Equipment ACDelco unit - the passenger temperature actuator is ACDelco 15-72971 (GM 89018365 / 52402588; aftermarket cross Dorman 604-106). Before buying parts, pull the HVAC fuse for ~60 seconds to force a recalibration in case the fault is only a stuck cal. After replacement, reconnect the battery and let the system self-calibrate. OEM/ACDelco parts are strongly recommended because cheap aftermarket actuators have a high early-failure rate on this platform.
A hallmark GMT800 complaint: a clunk or knock felt in the steering wheel and column when turning at low speed or driving over small bumps and rough pavement. The intermediate steering shaft (I-shaft) splines wear and lose lubrication, so the shaft binds and then releases with an audible/tactile pop. It is a comfort/annoyance issue rather than a loss-of-control safety defect, but it is extremely common and frequently returns after temporary fixes.
Temporary fix: lubricate the I-shaft with the GM Steering Column Intermediate Shaft Lubrication Kit (P/N 26098419). Permanent fix: replace the intermediate steering shaft with the updated non-serviceable unit (P/N 19153614) - note the newer design cannot and should not be greased. Confirm the clunk is the I-shaft (not the steering gear or a worn U-joint) before replacing.
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights are on. 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 #22V90300008/12/2022
SUSPENSION:REAR
General Motors, LLC (GM) is recalling certain 2023 Cadillac Escalade, Escalade ESV, Chevrolet Suburban, Chevrolet Tahoe, GMC Yukon, and Yukon XL vehicles. The rear suspension outer control arm bolts may not have been properly heat-treated, which can cause the bolts to break.
What is the 2007-2020 GMC Yukon AFM/DOD Lifter Collapse and Valvetrain Failure?
The GMC Yukon 5.3L (L83, LC9, LMG) and 6.2L (L94, L86) V8 engines use Active Fuel Management (AFM) cylinder deactivation. The special collapsible AFM lifters on cylinders 1, 4, 6, and 7 fail prematurely, causing misfires, engine ticking, rough idle, and potential catastrophic dam… Repairs typically run $3,500-$8,000. Severity: high.
What is the 2015-2020 GMC Yukon 8L90 8-Speed Torque Converter Shudder?
The 8L90 8-speed automatic transmission in 2015-2020 Yukon and Yukon XL suffers from widespread torque converter lock-up clutch shudder at light throttle between 25-50 mph. The clutch friction material degrades and contaminates the transmission fluid, causing the shudder to worse… Repairs typically run $150-$4,500. Severity: high.
What is the 2021-2024 GMC Yukon 6.2L L87 V8 Rod Bearing Failure and Loss of Propulsion?
NHTSA campaign 25V274 covers certain 2021-2024 GMC Yukon vehicles with the 6.2L gasoline V8. Manufacturing defects in connecting-rod or crankshaft components can damage the engine and cause engine failure. Severity: high.
What is the 2015-2024 GMC Yukon Corroded 7-Way Connector and Poor Trailer Ground Disable Trailer Braking?
The Yukon's Integrated Trailer Brake Control system (RPO JL1) is considerably more sensitive to connection quality than the aftermarket brake controllers it replaced. Rather than simply switching current to the trailer when the pedal is pressed, the Trailer Brake Power Control Mo… Repairs typically run $20-$350. Severity: high.
What is the 2000-2002 GMC Yukon ABS Turns Itself On at Low Speed — Salt-Belt Recall 05V379 (2000-2002 Yukon)?
GMC Yukons from 2000 through 2002 are part of NHTSA recall 05V379000, which addresses unwanted antilock brake system activation. Corrosion is the driving factor: GM stated the condition is more likely in environmentally corrosive areas and limited the recall launch to twenty salt… Severity: high.
What is the 2015-2018 GMC Yukon GM Recall 19V645000: EBCM Reprogram for Declining Vacuum Brake Assist?
GMC Yukons from 2015 through 2018 fall under NHTSA recall 19V645000. The defect: the amount of vacuum created by the vacuum pump may decrease over time. Less vacuum reaching the brake booster means less brake assist, so the Yukon's pedal grows stiff and the truck's stopping dista… Severity: high.
What is the 2007-2008 GMC Yukon Heated Washer Fluid System Overheats Ground Wire (Recall 08V441)?
GMC Yukons from the 2007 and 2008 model years that left the factory with the heated wiper washer fluid option are part of GM's 08V441000 recall. A short circuit on the washer fluid heater's printed circuit board can overheat the control-circuit ground wire. GM's stated consequenc… Severity: high.
What is the 2007-2009 GMC Yukon Heated Washer Fluid System Can Catch Fire (Recall 10V240000)?
GMC Yukons from 2007-2009 that were built with the heated washer fluid system (HWFS) are named in NHTSA recall 10V240000. The failure is in the heated washer module itself: a printed circuit board electrical short. GM had already run a 2008 recall that added a fuse to the control… Severity: high.
What is the 2021-2023 GMC Yukon 10L80 10-Speed Transmission Harsh Shifting, Shudder and Rear-Wheel Lock-Up?
NHTSA campaign 24V797 covers certain 2021 diesel GMC Yukon vehicles. A transmission control valve can fail and cause the rear wheels to lock. Severity: high.
What is the 2015-2018 GMC Yukon Brake Vacuum Pump Failure Causing Hard Brake Pedal?
NHTSA campaign 19V645 covers certain 2015-2018 GMC Yukon vehicles. Vacuum-pump output can decrease over time, reducing brake assist, increasing pedal effort and extending stopping distance. Severity: high.
What is the 2007-2020 GMC Yukon Autoride Air Suspension Compressor and Air Bag Failure?
Yukon and Yukon XL models equipped with Autoride (RPO Z55) or electronic suspension feature rear air springs and a compressor that commonly fail between 80,000-130,000 miles. The air spring bags crack from age and temperature cycling, causing the rear of the vehicle to sag overni… Repairs typically run $600-$3,200. Severity: medium.
What is the 2015-2025 GMC Yukon Power Running Board Motor Failure and Corrosion?
The power retractable running boards available on 2015+ Yukon and Yukon XL are a common failure point. The electric motors and gearboxes corrode and seize, especially in salt-belt states. Boards get stuck in the out position (creating a road-clearance hazard and trip risk) or ref… Repairs typically run $400-$2,500. Severity: medium.
What is the 2007-2020 GMC Yukon Water Pump Weep-Hole Leak and Coolant Loss?
The mechanical (belt-driven) water pump develops internal bearing and seal wear with age and mileage, then leaks coolant from the weep hole at the front-center of the engine. Left unaddressed the pump can drip DEXCOOL onto the ground, run the cooling system low, and cause overhea… Repairs typically run $400-$1,423. Severity: medium.
What is the 2007-2014 GMC Yukon 5.3L V8 Excessive Oil Consumption (AFM Oil Spray / Piston Rings)?
The Active Fuel Management (AFM) 5.3L V8 burns oil at an abnormal rate, frequently a quart every 1,500-2,500 miles. The AFM pressure-relief valve in the valley sprays oil onto the cylinder walls when cylinders deactivate; combined with low-tension/coking piston rings and an oil-d… Repairs typically run $1,500-$6,000. Severity: medium.
What is the 2007-2020 GMC Yukon Automatic 4WD Transfer Case Position Sensor / Encoder Motor Failure?
On Autotrac electronic-shift 4WD Yukons the transfer-case encoder motor and its position sensor/selector switch fail, so the module can no longer confirm the range. The dash 4WD buttons flash, the truck won't shift between 2HI/4HI/4LO or gets stuck in one range, the Service 4WD l… Repairs typically run $150-$700. Severity: medium.
What is the 2007-2014 GMC Yukon Cracked Dashboard Over Airbag and Instrument Panel?
The one-piece molded dash pad splits and cracks, most often along the seam above the passenger airbag and over the instrument cluster. Owners attribute it to GM's switch from a multi-piece to a one-piece design with insufficient relief points and over-tightened mounting bolts, co… Repairs typically run $800-$2,000. Severity: medium.
What is the 2015-2019 GMC Yukon Engine Overheat/Fail-Safe Mode from Thermostat and Coolant Temp Sensor?
A worn or leaking factory thermostat that stays open (plus a failing engine coolant temperature sensor) prevents the engine from reaching normal operating temperature. The ECM interprets the low/erratic reading as a sensor fault and enters a protective fail-safe mode: the electri… Repairs typically run $120-$450. Severity: medium.
What is the 2003-2006 GMC Yukon Instrument Cluster Stepper Motor / Gauge Failure?
The gauge cluster on 2003-2006 Yukons uses small stepper motors (the factory Switec/Juken X25.168-series) that wear out or jam. The speedometer, tachometer, fuel, or temperature needles twitch, flutter, stick, read wildly inaccurate, or peg at zero or maximum. A stuck or wrong sp… Repairs typically run $120-$400. Severity: medium.
What is the 2015-2020 GMC Yukon MyLink / IntelliLink 8-Inch Touchscreen Failure?
The 8-inch MyLink/IntelliLink infotainment touchscreen (RPO IO5/IO6) develops ghost touches where it presses buttons by itself, dead zones that stop responding, and delamination/bubbling where the digitizer separates from the LCD. Because so many K2XX Yukons share this radio, it… Repairs typically run $150-$600. Severity: low.
What is the 2007-2014 GMC Yukon HVAC Blend Door Actuator Failure (Clicking Behind Dash)?
The small electric blend-door actuators that control temperature and air-flow direction strip their internal plastic gears, producing a repetitive tapping/clicking noise from behind the radio or glovebox and causing the HVAC to blow the wrong temperature (e.g., stuck cold on the… Repairs typically run $60-$500. Severity: low.
