GMC Yukon Complaints

6,462 consumer complaints on file.

#11759070August 24, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2012 GMC Yukon. The contact stated that the radiator and the water pump were previously replaced due to an overheating failure. The contact stated that while driving at various speeds, the engine made a knocking sound. No warning light was illuminated. The vehicle was taken to AutoZone, where it was diagnosed with engine lifter failure. The contact replaced the spark plugs on several occasions; however, the failure persisted, and oil contamination was found on the spark plugs. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 175,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759282August 24, 2026
ENGINE
While driving down [XXX] in [XXX] engine had a major failure causing the loss of power and control of the vehicle going interstate speed. Luckily no accidents and no injuries or fatalities. All the these vehicles using the 6.2L engines made by GM should be bought back by GM at full purchase price. A few months ago my vehicle underwent the recall procedure and passed. So the recall process is incomplete and shows no real problem solving procedures, These vehicles are a ticking time bomb to all the owners and fellow motorists. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759232August 24, 2026
ENGINE, FUEL/PROPULSION SYSTEM, UNKNOWN OR OTHER
I was driving down the highway and all at once a bunch of different lights and emergency warnings started flashing on my dashboard and my car was almost like sputtering like it wasn’t getting the gas it needed or something. You could feel lots of movement right up front and I was forced to pull over and get towed. They said the engine would need to be completely replaced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759183August 24, 2026
ENGINE
The 6.2 GMC engine has been replaced. I took my Yukon in for a oil change, on the second engine, the tech said that it now has a new oil synthetic 0-40, and I have to have the oil changed every 3 thousand miles. I checked with a couple of mechanics and they all said, synthetic is good for at least 5 thousand miles, and just thicker oil will not solve the engine problems that have plagued GM. I am bringing this to your attention as these vehicles are pretty much worthless in the marketplace, and as such GM should refund or exchange for the 2027, with the new motors.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759181August 24, 2026
ENGINE
I was on the highway i90 and the motor failed. Had to get it towed the the nearby GM dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759162August 24, 2026
ENGINE
This car was subject to the GM Recall N2524940000 – This is related to engine failure in the vehicle. My Yukon Denali received the recall service on XXX at Liberty Buick GMC in XXX. It was determined that my engine would not fail and the car needed the heavier oil and a new oil filter. The car also received a 10 year warranty on the engine as part of the recall. XXX We were traveling down XXX Southbound on XXX headed to Atlanta to see family for Easter Break. My wife, son CJ (Age -XXX), XXX (XXX), and our English Cream Golden Retriever , Goose. We were traveling at 75 MPH on cruise control when a car came out in front of me. The car slowed down to adjust for the car moving out in front of us and then the engine completely shut-off and the car shifted into neutral. The car electronics turned off briefly, then came back on, with the dashboard saying “Push Start to turn on”. I hit the start button and nothing happens, I pushed the button several more times and still nothing happened. This occurred between 1:45 - 2:00 At this point, I begin to move into the right lane as we are approaching Exit XXX in [XXX]. I pull off on the exit, go about half way down and pull to the side, stopping the car. I place the car into Park and then push start on the car, nothing happens. I attempt to do this for about 5 Minutes and the engine still will not start and the car will not shut off completely (All electronics are still working). There were no warning signs that the vehicle would fail. The vehicle was inspected by GMC who determined that the engine had failed and would require full replacement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758992August 24, 2026
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
On August 22, 2026, I was driving my 2023 GMC Yukon Denali with the 6.2L V8 at highway speed when the vehicle began struggling to maintain power while climbing a hill. The engine then developed a noticeable knocking sound. Shortly afterward, the engine shut off completely while the vehicle was moving, causing a sudden loss of propulsion. I was able to bring the vehicle to a stop, but the engine would not restart. The electronic transmission also would not shift into Neutral and displayed a message indicating that the conditions required to shift were not met. Because the vehicle could not be shifted out of Park, the towing company had difficulty loading and unloading the vehicle. The failure occurred during normal highway driving and created a significant safety concern because the engine shut down without warning while the vehicle was in motion. I am aware of NHTSA Recall 25V-274 / GM Recall N252494000 involving certain GM vehicles equipped with the 6.2L L87 engine, as well as NHTSA Engineering Analysis EA25-007 concerning engine failures and loss of propulsion. At the time of this complaint, the dealership has not yet confirmed the specific mechanical cause of my vehicle’s failure. The vehicle is being taken to an authorized GMC dealership for diagnosis. I am submitting this complaint because of the sudden engine failure and loss of propulsion while traveling on a highway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758957August 23, 2026
ENGINE
We just purchased our Yukon from a dealership in February (2/7/26) and it was diagnosed with premature failure of at least one AFM valve lifter as it is causing engine misfires, shaking and stalling on 7/30/26. We just hit 67,000 miles on the odometer so we are just beyond the warranty coverage. The lifters were replaced previously by the previous owners on 12/16/24.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758951August 23, 2026
ENGINE
While we were visiting Canada, our GMC Yukon had fewer than 5,000 miles when its engine seized on the highway. The vehicle was taken to a GMC dealership in Canada. The dealer advised that the engine needed to be replaced, and it has now been replaced. We need to back to Canada to pick up the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758878August 23, 2026
ENGINE, FUEL/PROPULSION SYSTEM
Vehicle loss of power on the Interstate at a high rate of speed. Vehicle would not start and could not be put in Neutral to safely remove from road.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758834August 23, 2026
ENGINE
The engine began knocking on startup and on acceleration. The vehicle would sometimes have difficulty accelerating. Upon taking it to the dealership, they were able to duplicate the issue. Upon inspection by the dealership, 2 rod bearings had spun and caused crankshaft damage. The manufacturer approved a full engine replacement under the warranty. There were no warnings lights, messages, or any other symptoms of the problem prior to the first incident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758809August 22, 2026
ENGINE
Engine would tick and burn oil after the updated recall was done. There would be a hesitation occasionally when applying gas when pulling out from stop sign or stoplight. The engine stalled and would not restart. It would crank over but it was a super fast and elongated turn over. We had to call a tow truck and have it towed. The dealership said they found nothing wrong and sent us back out with it. We sent it to another dealership would replaced the auto start stop switch, changed the belts, and did a fuel/valve treatment to clean the fuel system. We got it back and ran it less than 30 days when we picked it up from the dealership after we changed the engine oil, my wife headed out of town on the highway headed to pick up our daughter and the car made it less than 6 miles before it lost power and shut off going 65 mph and almost caused her to get in a wreck. The engine did not turn back over and would not start. Sent it back to the dealership and they found a crank bearing had seized and they replaced the engine. We just got it back but we are not holding our breath since we know so many people here in our small town who have had their engines replaced and we have heard of people getting multiple engines replaced! There fix is not a fix and when these motors go down at highway or freeway speeds it is extremely dangerous. It’s also dangerous for people when they get stranded out in the middle of no where.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758792August 22, 2026
ENGINE, POWER TRAIN
Vehicle lost all power and shutdown coming off the highway. This all happened even after the heavier ow-40 oil was added from the initial engine inspection. Been waiting almost 2 months for a total engine replacement
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758771August 22, 2026
ENGINE
I am writing to report my 2021 GMC Yukon Denali. This vehicle recently suffered a catastrophic failure of its 6.2L V8 engine while traveling on the freeway with my family inside, creating a severe and terrifying safety hazard. This failure occurred after my vehicle was supposedly remedied under GM’s official safety recall for the known L87 engine defect (Recall N252494001). As the National Highway Traffic Safety Administration's (NHTSA) recently escalated Engineering Analysis reflects, the recall inspection and 0W-40 oil remedy are failing to prevent these engines from destroying themselves. My experience is direct evidence of this continued safety defect. GM has since now fully replaced my engine however only reimbursed me 30% of what it cost to tow to their dealership. Thank you for your consideration.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758712August 22, 2026
ENGINE
We were driving back from vacation in a 2022 Yukon Denali with less than 40,000 miles on it when our engine completely seized. We were going highway speeds in a remote area. 4 kids were in our car, one of them only 1 month old. We were stranded for 10 hours. Engine needs to be completely replaced. GM is not providing any assistance.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758697August 22, 2026
ENGINE
I am filing this complaint regarding repeated catastrophic engine failures in my 2021 GMC Yukon Denali equipped with the 6.2L L87 V8. I purchased this vehicle as a GM Certified Pre-Owned vehicle. At approximately 7,000 miles, the engine developed a knocking noise and was determined to require complete replacement. I brought the vehicle to the dealership on May 19, 2025, and it remained there until September 17, 2025—nearly four months—while the replacement engine was obtained and installed. Since receiving the replacement engine, I have driven approximately 6,000 miles. On August 4, 2026, I was informed by the dealership that the replacement engine has also failed and requires another complete engine replacement. This means my vehicle has now experienced two major engine failures at extremely low mileage, including failure of the replacement engine. I understand that the 6.2L L87 engine has been subject to a GM recall involving potential engine failure and loss of propulsion. I have now learned that NHTSA has escalated its investigation into continued failures involving these engines, including failures occurring after the recall remedy. My experience appears directly relevant to that investigation. I regularly transport my children in this vehicle and am extremely concerned about the possibility of an engine failure occurring while traveling at highway speeds or with my family in the vehicle. I feel fortunate that the previous failures did not occur under those circumstances. I have contacted GM and requested that they repurchase or replace my vehicle. GM denied my request and has refused to provide me with a reason for the denial. I am asking NHTSA to document my complaint and investigate whether the existing recall remedy is adequately addressing the underlying safety defect, particularly given that my replacement engine failed after only approximately 6,000 miles.I can provide repair orders, recall documentation, mileage records, and correspondence with GMC
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758683August 22, 2026
POWER TRAIN, ENGINE
While traveling on [XXX] from Houston back to San Antonio, my truck engine just blew up without any warning whatsoever. We purchased the truck with 3 miles on it, and we have only put 5,000 miles on it. New cars that cost early $100K shouldn’t be having engine failures like this. I’m lost for words now! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758609August 21, 2026
ENGINE
My yukon denali ultimate had only 3,788 miles on it and on 7/27 while merging onto a highway my vehicle made a sound like it was trying to shift into gear but couldn't and then while I'm pressing the accelerator pedal it's slowing down. There were tractor trailer and vehicles speeding up behind me but I couldn't speed up and I was able to pull over on the shoulder luckily and I'm thankful it did not cause an accident. My yukon would not start no matter what I tried and I ended calling a tow truck and had it towed to my local GMC delearship where I was informed that the engine had seized and they would order a new replacement engine. My yukon is still sitting at the dealership waiting for the repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758478August 21, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2023 GMC Yukon. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormal clunking sound. The contact pulled over and inspected under the hood. The vehicle was restarted, and the engine revved six times with smoke coming from under the hood. The contact stated that the transmission was previously replaced. The vehicle was towed to the dealer, who discovered that Jiffy Lube had used an incorrect engine oil during an oil change. The contact was informed to contact Jiffy Lube and file a claim. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 36,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758179August 20, 2026
ENGINE
I have a 2024 GMC Yukon Denali equipped with the 6.2L L87 V8 engine. The vehicle has approximately 23,000 miles. The vehicle previously underwent the remedy associated with the L87 engine recall. The engine now uses SAE 0W-40 dexos R oil and has the corresponding 0W-40 oil fill cap. After the recall remedy was performed, the check-engine warning light began intermittently FLASHING while I am driving. The light may flash for a period of time and then turn off again. I have also intermittently experienced the engine running rough or the vehicle shaking while idling. I have noticed the flashing warning light occurring while the engine is under load, including while driving uphill. I have video documenting the check-engine light flashing while the vehicle is being driven. Because the condition is intermittent, the warning light is not necessarily illuminated afterward. I am concerned because this vehicle is equipped with the L87 engine that was subject to GM recall N252494000/NHTSA Recall 25V-274 for potential engine damage/failure, and my vehicle appears to have already received the recall remedy. I understand NHTSA is currently investigating reports of L87 engine failures occurring after completion of that recall remedy. The cause of my vehicle's current symptoms is UNKNOWN and has not yet been diagnosed. The vehicle is available for inspection. I am filing this complaint because an intermittently flashing check-engine warning, rough/shaking operation, and the possibility of an engine malfunction or loss of propulsion present a safety concern, particularly if an engine failure occurs while the vehicle is being driven. I do have an appointment with a different GMC dealership for next week instead of the GMC dealership that sold it to me and preformed the original fix.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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