2021 GMC YUKON Complaints

What component or system failed or malfunctioned, and is it available for inspection upon request? - Engine Failure, on November 8, not certain engine is available for inspection -2nd Engine Failure, February 27, engine being replaced now and can be inspected How was your safety or the safety of others put at risk? -first engine failure happened on highway interchange without warning and stranded the vehicle on a busy highway with 6 passengers (5 of them children) at risk -second engine failed in the middle of an unprotected intersection, and would have caused an accident if other drivers were unable to brake Has the problem been reproduced or confirmed by a dealer or independent service center? -both engines discovered metal debris in the oil pan Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? -yes, vehicle was inspected by GMC dealership both times Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? -no warning lamps appeared, a message was displayed to restart engine as the engine was shut down while in Drive.

at 60860 my first engine went out General Motors offered no help i have extended warranty it took 3 months to get my Yukon back now 40000 later 2nd engine goes out cannot get a dealer to touch excuse after excuse tried to contact General Motors nobody will talk to me

We purchased our 2021 GMC Yukon used from a dealership 1 year ago with zero issues. 3 days ago out of no where there is a very loud squeaking sound in the front under the hood. No engine or warning lights just the sound. We had a mechanic check it and a part inside the tansmission is broke. NOT fixable, MUST be replaced.......

Our family of 6 were traveling home on the Freeway, from a family road trip going about 75 mph. The engine revved up and then the entire car all electronics went black. And then flashed back on. A warning told me to "Start Engine" I attempted to, and it would not turn over. I was able to get to the shoulder to get us out of the hi-speed traffic. I put our hazards on, and the "Start Engine" warning popped up again. I attempted to start the engine again and it wouldn't turn over. All the warnings started to flash things like "check transmission, check battery.." etc. We asked our kids to stay buckled, because of the hi-speed traffic, and that it was dark outside, and we were in more of rural area. We called the nearest tow company, and had to wait about 30-40 minutes for him to get to us. The tow truck operator was not able to get the car in neutral to be able to get the Yukon on to the tow truck, he eventually got it on. The next morning the Service Tech called and said the car was completely dead when he got to it. Then, he called me later in the day and said he was able to look at the vehicle and run diagnostics and said the engine had seized. My car is less than 4 years old and had 66k miles. I had it serviced right before our family road trip at 64k miles. We have been the only owners and have always serviced it through GMC Service Centers Only. *Note*We had complained multiple times of a squeaking/chirping noise coming from the engine. Since we first received it. The service center kept the vehicle a couple of times overnight to try and diagnose. We had to pay for a new belt replacement, and the squeaking/chirping noise was never resolved. We wonder if this was a preexisting issue.

Engine or something is making a noise every time turned on and now while turning off

Hello, I am writing this complaint because i bought this 2021 GMC Yukon new from King GMC in Loveland CO. The engine seized up on me while driving once turned off, i was able to get it going and now it has done it again but this time no luck getting it going, Maintenace has always been maintained and up kept, and the more i read about this i am finding out its a problem that everyone is getting with this 6.2 litter engines. The dealer wants to charge me 30k to change the engine and radiator and cooler lines on an already ridiculous overpriced vehicle. I am not sure why there hasn't been a recall issued perhaps because it involves a new engine? over700k people have the same problem. if thier is something you guys can do i dont think its correct the customers have to pay the dues on an unsafe bad design engine. Thank you for your time

My wife was driving down the road with my Daughter and the engine simply stopped running without warning. She was able to coast to a stop on the side of the road and engage her hazard lights. When she tried to restart the engine it just cranked but never started. We had it towed to a mechanic and the mechanic told us that the engine is seized and we likely need a new engine, total cost of over $20,000. This vehicle should not be having this type of issue at 70,000 miles. If they were on a busy highway in the middle of rush hour it would have been a very dangerous situation.

Car shutdown and shifted on its own down to neutral from drive. Was driving on highway. Never was able to shift to another gear after pulling over. Computer board was completely blank. Engine would never restart. This is the second engine to go out in this vehicle.

On [XXX] while driving my 2021 GMC Yukon Denali to work, the vehicle suddenly lost power without warning. I had it towed to the dealership, where I was informed that the fuse pack needed replacement. Less than 36 hours after getting my vehicle back, I experienced another critical failure—while driving, the traction control light and check engine light came on, and the engine began making a loud clacking noise. Upon returning it to the dealership, I was told that the vehicle required a complete engine replacement. Prior to this incident, my Yukon had no known mechanical issues. However, despite the vehicle being only three years old and under GMC’s 5-year/60,000-mile PowerTrain warranty, the failure occurred at 65,722 miles—just over the coverage limit. GMC has acknowledged nearly 900,000 reported issues related to this engine defect, yet instead of issuing a full recall, I was only offered 60% coverage, leaving me with over $5,000 in out-of-pocket costs for an issue that is clearly a widespread manufacturing defect. I purchased this vehicle for its reputation of reliability and safety, especially as the primary mode of transportation for my family of five, with no nearby relatives to rely on. Given the known defects, it is unacceptable that GMC has failed to take full responsibility. I am formally requesting that GMC cover the full cost of the engine replacement and issue a recall to prevent other consumers from experiencing the same failure. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

All lifters had to be replaced at 5,315 miles on 7/28/21 #7 Piston had to be replaced at 42,431 miles on 5/24/24 This vehicle has the 6.2 L V8 L87 engine that is part of NHTSA Investigation # PE25001 I am reaching the 5yr/50,000 mile drivetrain warranty and am concerned that this engine could have recurring problems.