GMC Complaints

Bought the truck back in January of 2023. Within 3 weeks of owning it an only 900 miles it spun a thrust bearing. Told me 9 months for a new motor. Offered to rebuild it an try to fix. They tried an fail miserably. During the final road test after rebuild had massive lifter failure. Replace cam ran the truck for about 4-6 months an lost all tolerance on main bearings an thrust bearings again.

On 9/23 truck just shut off while driving to work no warning just shut off costed to side of interstate got towed in at 2:30 am and was later called had engine failure. Got back out of shop on 10/16 with 86581 miles on it On 10/28 driving on interstate to ball game truck shut off again no warning costed to side got towed in again. Get call later engine failure AGAIN with 86568 miles on it. So I had the truck back less than a month with 78 miles on it with the 2nd engine failure . During all this had to purchase a new car to drive to work which is a hour each way. Now truck is fixed and we’re scared to even drive it out of town now. It really sucks they can get away with this!!!

I am writing the NHTSA to advise of a harrowing event involving the vehicle named above. I was driving my 2022 Yukon vehicle equipped with the 6.2L Ecotec3 V8 L87 Engine. As I was traveling, the vehicle suddenly without warning shut down. When this occurred all systems in the vehicle became completely inoperable; i.e., no power steering, no power brakes, nothing, Etc. I was lucky to be able to veer/coast into the Emergency Lane without incident. This situation also caused the vehicle to become almost un-towable, in that the towing company could not get the vehicle out of the Park position to allow the wheels to rotate. They had to use special Skid Plates / devices to essentially force the vehicle to Slide instead of rolling onto the towing vehicle. This added significate hazard and risk of injury because of the problematic situation of loading the vehicle in this manner literally inches from the active travel lanes and took much longer to load than it would have otherwise. The vehicle was towed to the local dealer. The Dealer replaced the Fuel Module and returned the vehicle. This information is being sent to GM as well. After this event I was concerned for driving the vehicle but now after reading about the recent NHTSA Investigation into Engine Failures I am much more apprehensive about driving the vehicle. Even if nothing happens individuals who have these vehicles have now lost significant value and face a very difficult time even being able to sell their vehicles at all, or at a much lower price than normal because of the known Defects. I hope this helps the NHTSA to further their Investigation of GM’s defective vehicles and get these vehicles repaired and/or replaced in a timely manner before tragedy strikes any individuals.

I was pulling a trailer loaded with my UTV when I suddenly lost power going up a hill. I pulled off to the side of the road and turned off the truck. When I attempted to restart it the truck wouldn’t do anything so it needed to be towed. Upon the dealer looking at it they said the crankshaft bearing broke which is a common problem with the 6.2 motor and it needs to be replaced. The truck has just over 16,000 miles on it.

I was driving my car and it started making "clanging" and "banging" noises and jolting/jerking forward. It was scary to drive because of the noise and the jerking foward. I was afraid that my car was going to just stop working, I would get stuck/stranded somewhere or my car was going to blow up. I brought it in to the dealer two times. The first time they thought it was the battery so they replaced the battery but that didn't fix the problem. The second time I left it there for days and they told me that I needed a new transmission. The problem was reproduced and inspected by them. There were no warning lights or messages prior to the failure. The problem started on approximately January 6, 2025. Online, I have read from other sources that 2017 - 2020 GMC YUKONS are know to have transmission problems. My car only has 58,000 miles on it, has been serviced consistently, and should not need a new transmission at this low mileage point.( 150,000 to 200,000 is the norm for transmission replacement)

Lifter failure Car could not be driven and were stranded at night in the dark. The car had to be towed but the tow truck did not arrive until morning. It was an EXPENSIVE repair at GMC dealership. GMC confirmed this was the issue Car started to make a loud noise, so I stopped driving. It is NOT an old car - 2020 and happened December 2024 GMC said it is not something they will cover

The contact owns a 2017 GMC Acadia. The contact stated that after making a left turn and stopping at a traffic sign, there was an abnormal clicking sound coming from underneath the vehicle. The contact stated that there was no warning light illuminated. Additionally, the contact stated that the vehicle was hesitating before gaining forward momentum while depressing the accelerator pedal. The contact stated that the vehicle bucked or lunged forward while accelerating. The contact stated that there was no warning light during the failure. The contact had taken the vehicle to an independent mechanic who diagnosed the vehicle and determined that the intermediate drive shaft was failing. The mechanic informed the contact of NHTSA Campaign Number: 17V516000 (Power Train) and advised the contact to take the vehicle to a dealer to be repaired. The contact had called a local dealer and was informed that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 160,000.

The car was clicking when it was first started up, a short time later it started to shake terribly which forced my [XXX] son who was driving the vehicle at the time to pull over, on a major toll-way in heavy traffic. Engine light started to blink and traction control light came on. I immediately took the car into the dealer and was told I need new lifters ($3800 + Tax) and most likely a new engine (they quoted me $15,865). From what I am reading this issue is common place with the 6.2L engine...frightening and very lucky my son was not injured. I have filed a case with GMC - Case #[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On [XXX] I was driving about 75mph on the freeway and suddenly the vehicle gear switched from drive to neutral. The vehicle dashboard read "vehicle condition not safe for shift" I tried to put the car back in drive by pushing the drive button but the vehicle was stuck in neutral. I pressed on the gas but it was not working since the car was in neutral. Since I could not use the gas to move forward, I could not go up on the ramp and was stuck on the busy freeway between the off ramp and the busy lanes of cars going 70+. The right rear end of my vehicle was in the offramp lane. I started to panic because I had my [XXX] daughter in the car. The steering wheel was completely locked and the rear axel was locked as well. There was no warning before the engine cut off. The electrical was all still working. I called AAA for a tow and 911 for CHP assistance since I was in dangerous spot. Took it to GMC Carlsbad Service, advisor Jason just called me and told me the engine had seized up and will most likely need the engine replaced. On 1/9/25 I had the car oil changed at the GMC service department in Escondido where I purchased the car. The vehicle has an open ticket and GMC is conducting a full investigation. I am told the whole engine will need to be replaced and will take 4 weeks from 1/22/25 to fix. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Engine failure at low mileage. 60,300 miles. Piston 1 failed. Broken rings. Needs full engine replacement. GM will not stand by their product and repair it.