GMC Yukon Complaints

6,462 consumer complaints on file.

#11718240February 16, 2026
SUSPENSION
Air bag suspension does not work in sub freezing temperatures. Vehicle bounces up and down excessively and is extremely unstable and unsafe to drive at any speed. Vehicle speed was limited to 56 mph. Dealer stated that this is a known flaw but not recall has been issued. This is a design flaw that GMC should be responsible to correct.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718202February 16, 2026
ENGINE, STEERING
My 2023 Yukon AT4 was taken to certified GMC dealer in November 2025 for the engine recall. The dealership gave my vehicle a clean bill of health at that time and the recall repair was cleared. On Friday, 2/13/26, myself and 5 other family members were en route to my godfather's veteran funeral service in Newtown, PA. We were going 75mph in the middle lane of the PA Turnpike when the motor seized up and vehicle lost all steering control and power. Since it was the side of the turnpike, we were limited in resources and stranded, missing the funeral service due to the length of time it took to get the vehicle loaded on a tow truck. Since the vehicle was unable to release the parking brake, the tow driver(s) were struggling to tow it. My husband, ended up having to go under the vehicle (on the side of the turnpike) to disengage the parking brake to help the tow drivers. This could have been a catastrophic situation. My vehicle was taken to a different GMC dealer than the original one that did the recall check. There are no rental vehicles available, so I am too out of a vehicle necessary for my work and family, with no time frame on the repair of my engine that only has 31,000 miles on it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718012February 14, 2026
ENGINE
My 2023 Yukon Denali is part of the L87 engine loss of propulsion recall. On August 28, 2025 my Yukon was inspected by Sterling McCall Buick GMC (where I purchased it) and it was deemed to have passed inspection. They changed the oil and installed a new oil fill cap and filter. On February 13, 2026 I took my Yukon to my mechanic for an oil change. Upon initiation, he advised me that he found the oil stick to be dry, no oil on the stick. There was no leak.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717784February 13, 2026
POWER TRAIN
Slipping Gears: Many Yukon Denali owners report experiencing unexpected gear changes or loss of power while driving. Hard Shifting: This problem manifests as harsh or abrupt gear changes, often accompanied by noticeable jolts when shifting from one gear to another. Unusual Noises: Grinding, whining, or clunking sounds when shifting There has been a class action lawsuit for this. I'm not sure why it has not been recalled in all states.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717581February 12, 2026
ENGINE, FUEL/PROPULSION SYSTEM
Misfire then replaced plugs,coils and wires, then change fuel injector, and problem still there, then started truck and was tossing power and motor started ticking. Every shop told me this is the same common problem they're having with all 6.2L engine and they're all on recall by GM. I know 2016 are not in recall but I think they should be because this problem is in all 6.2L engine
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717529February 12, 2026
ENGINE
Post initial remedy, which included oil sand cap replacement to 0-40, as directed by the manufacturer's recall documents, and passing the PicoScope test on August 26, 2025, the vehicle lost propulsion while traveling 58 mph, in the center lane of a busy, notoriously dangerous Saeford-Oyster Bay highway. At the time, the vehicle was occupied by a 2-week-old infant, the child's mother, and a dog. Prior to the failure, there were no indications of a pending or present issue. The vehicle's engine shut off, it shifted into neutral, and upon stopping, it shifted into a parked position, where it remains to date. Subsequent to pulling the vehicle onto the shoulder, the engine failed to restart. Approximately 6 hours later, the vehicle was towed to a GMC dealer, which subsequently confirmed that the engine is seized. The dealer submitted a report to GM to remedy the condition, pursuant to the manufacturer's recall instructions, but the manufacturer is yet to approve the remedy.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717445February 12, 2026
ENGINE, ELECTRICAL SYSTEM, POWER TRAIN
In 2023, the vehicle began exhibiting erratic transmission shifting behavior, including harsh and unpredictable shifts while driving. The vehicle was taken to a GMC dealer for diagnosis and repair. Recently, the vehicle developed additional drivetrain and engine control issues related to the crankshaft position sensor circuit. The vehicle stalled while driving on a highway mountain overpass with multiple vehicles traveling behind me. When the stall occurred, the vehicle shifted into park and would not restart for several minutes. This created a hazardous situation due to loss of propulsion in active traffic at highway speed and limited shoulder space. Following diagnosis, the servicing dealer determined that the engine wiring harness requires full replacement due to internal wiring integrity issues affecting critical engine control signals. The crankshaft position sensor and related wiring are essential for engine timing and propulsion. Loss or corruption of this signal can result in reduced engine power, erratic transmission behavior, stalling, or no-start conditions. The earlier erratic shifting behavior appears consistent with conditions described in GM Technical Service Bulletin 21-NA-149, which identifies engine harness-related causes for drivetrain and shifting concerns. This issue appears to involve degradation or defect within the engine wiring harness affecting engine management and transmission operation. Given that this condition resulted in a highway stall and temporary inability to restart, I am reporting this for investigation as a potential safety-related defect involving loss of propulsion.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717207February 11, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2021 GMC Yukon. The contact stated that while shifted into drive(D), the accelerator pedal was depressed, and the vehicle lost motive power, and several unknown warning lights were illuminated. The contact stated that the check engine, stability control, and several other warning lights were illuminated. The contact stated that the vehicle was making abnormal whining sounds, and the vehicle failed to accelerate above 20 MPH. The contact had been experiencing the loss of motive power with the vehicle for approximately 2 years; however, the failure was intermittent. The contact had taken the vehicle to a local dealer on several occasions; however, the failure persisted. The contact notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); and the vehicle was taken to a local dealer for the engine to be tested. The contact was advised by the dealer that the engine had passed the test, and a higher viscosity oil was added, and the oil filter and oil filler tube were replaced, along with updating the manual. The vehicle was repaired; however, it was still experiencing a loss of power with several warning lights illuminated. The manufacturer was made aware of the failures. The failure mileage was approximately 42,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717190February 11, 2026
UNKNOWN OR OTHER
I own a 2021 GMC Yukon Denali XL with approximately 81,000 miles. On 4 separate occasions, after coming to a complete stop in traffic and then attempting to accelerate, the vehicle violently jerks and shifts itself into park. I am not pressing the brake when this occurs. I must manually shift the vehicle back into drive in order to continue moving. This happens so fast, that I am only able to see a red outlined box that intermittantly flashes on the dashboard but I cannot see what it says before it disappears. The incident feels as though the vehicle has been struck from behind due to the abrupt force. This has occurred more than once and creates a dangerous situation in traffic, particularly when vehicle are behind me. The vehicle has been taken to a GMC dealership, which has serviced the vehicle since 2021. The dealership reports they were unable to duplicate the condition after driving approximately 60 miles and therefore cannot perform a repair. This issue remains unresolved. Given that the vehicle is shifting into park while in motion or during acceleration, I believe presents a significant safety hazard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717094February 10, 2026
ENGINE
The contact owns a 2012 GMC Yukon. The contact stated that years ago, the engine was replaced with a rebuilt engine. Recently, after starting the vehicle, there was an abnormal banging sound coming from the engine. The banging sound continued, and the vehicle shut off without warning. Due to the failure, the vehicle was towed to an independent mechanic, and it was discovered that an engine bearing had failed, and the vehicle was diagnosed with engine failure. Neither the dealer nor the manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 47,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717135February 10, 2026
ENGINE
Driving normally. Stopped at a red light when the car started to touch idle and proceeded to shut off. Tried to restart the car and when ignition button was pressed the screen and all electronics shut off and there was smoke coming from the engine bay. Police were called and the car was towed to the nearest gmc dealer. Was called today 2/10/2026 with the update that it was going to require a new motor.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717049February 10, 2026
UNKNOWN OR OTHER
On Star module quit working in our Yukon, which in turn makes it useless to have any of the safety features. On Star and GM know this is an ongoing problem, but no recall has been issued. Neither company will repair unless an $1100 fee is paid. Why install On Star if you know it will malfunction. Since there is a monthly service fee I think they need to make sure the vehicle has the correct parts.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716959February 10, 2026
ENGINE AND ENGINE COOLING, ENGINE
The contact owns a 2022 GMC Yukon. The contact stated that the vehicle was consuming an excessive amount of oil. The vehicle was taken to the dealer, where it was diagnosed, and metal shavings were found in the engine oil. The dealer replaced the camshaft and lifters; however, the failure worsened. The contact stated while driving approximately 65-70 MPH, the vehicle stalled and lost power steering functionality. The contact's husband was able to pull over to the side of the road. There was no warning light illuminated. The vehicle failed to restart and was towed to the residence. The vehicle was then picked up and diagnosed by the dealer. The dealer determined that the engine had seized and needed to be replaced. The contact had opened a case with the manufacturer for buyback assistance due to safety concerns. The vehicle was not repaired. The failure mileage was approximately 46,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716954February 10, 2026
ELECTRICAL SYSTEM
Rear camera for in cabin rear view is improperly sealed for cold weather and constantly fogs which renders the camera worthless. I was also sent brand new side lights from gm that were improperly sealed and built condensation them after a month or two.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716767February 9, 2026
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
Automatic emergency braking system deployed unexpectedly on acceleration from a traffic light stop. Vehicle was about 10-15 MPH and system operated with no brake pedal input. A vehicle behind had to do a panic stop to avoid collision. Deployment disengaged when accelerator pedal was released. My wife, principal driver, was in the car. She advised this had occurred two times before. No recalls are presently listed for the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716889February 9, 2026
ENGINE
The 3.0L diesel motor failed around 5700 miles. The thrust bearing failed and the engine and the turbo needed to be replaced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716858February 9, 2026
BACK OVER PREVENTION: WARNINGS, LANE DEPARTURE: WARNING, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
Unknown
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716485February 7, 2026
ENGINE, POWER TRAIN
Engine failure while driving 75 miles per hour in highway in brand new Yukon Denali. 3,000 miles and got a “decreased acceleration” warning. Then couldn’t accelerate and loud knocking noise from the engine, likely a lifter issue. I will have to get a new engine according to GMC. Unbelievable. Recall was for 2021-2024, but my 2026 is havin the same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716461February 7, 2026
ENGINE
Engine started knocking and developed slow acceleration out of the blue. In addition car has locked up on freeway despite not having any cars around me. Its been in the shop for 3 days and still no diagnosis.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716367February 7, 2026
ENGINE
While driving down the road, my 2023 Yukon 6.2L engine shut down, shifted to neutral, and a message on the screen said “press start again” leaving my family in a powerless vehicle in the middle of the road in moving traffic. There were no warning signs nor is my vehicle included in a current recall. The vehicle will be taken to the dealership tomorrow morning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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