GMC Complaints

The contact owns a 2020 GMC Sierra 2500. The contact received notification of NHTSA Campaign Number: 24V797000 (Power Train); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

I have received the notice about the recall and now I am just worried because I have a wife and two-year-old child in my truck. I don't want the engine issue to happen while they are in the truck and increases the risk to get into an accident if the engine fails. I have tried to schedule an appointment with my dealership and from the date I received notice on 04/28/2025. They stated I have to call back in two weeks which should be unacceptable because how about if the engine fails within the two weeks and causes even more issues for me and my family. This should be approached much quicker and fix the matter asap.

The contact owns a 2024 GMC Sierra 3500. The contact stated that while driving at various speeds, there was an abnormal knocking sound coming from the vehicle. There were no warning lights illuminated. The vehicle was taken to a local dealer where it was diagnosed; however, the cause of the failure was not yet determined. The contact was advised by the local dealer that the engine might need to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

Engine failed GM made me pay for a new one. Second engine failed due to mechanics did not change out radiator. I now have a third motor with a recall. This vehicle has cost me a lot of out of pocket expenses, I believe GM owes me for the depreciated value plus lost wages. Maybe a buy back I'm not sure.

My camshaft failed only 1.8 years into having my brand new truck. GMC dealership repaired it so not sure if they have the part. My truck wouldn’t drive right causing everyone to be at risk. No warnings at all! I take very good care of my truck and the moment a light comes on I get it investigated. This repair was over 15000$ out of my pocket and they had to replace the engine entirely.

While driving on the highway warning lights for ABS, Check Engine, traction control and towing disabled came on. Also, the truck was limited to a speed of 62 mph. When attempting to apply the brakes the peddle went to the floor and the truck was extremely hard to stop. Power brakes were gone and manual braking was the only way to stop. After pulling over and restarting the truck the power brakes came back. The truck was taken to the dealer and they claimed the truck needed some updates and was fixed. About four months later this same problem occurred again while coming to a stop causing the truck to miss a stop sign and enter an intersection. The same lights came on and the trucks speed was reduced. After restarting the truck the power brakes started working again and the truck was dropped off to the dealership. The dealer looked into the problems and said the truck needed computer updates but found no other problems. Driving this truck has become nerve racking not knowing if the brakes will stop working again.

I was driving my truck from lunch and out no where the truck stalled and did crank back had it towed to the dealership and said needed new engine because the timing had jump..

I am writing to formally report a serious issue with my 2021 GMC Yukon XL. The vehicle has developed multiple severe problems, including: •Significant loss of engine power •Noticeable engine knocking noises •Transmission slipping while driving •Transmission movement even when the vehicle is at a full stop These issues not only impair the performance of the vehicle but also raise serious safety concerns. The loss of power and the slipping transmission could lead to a dangerous situation while driving, placing both myself and other motorists at risk.

Driving on freeway, engine shut down and transmission shifted to neutral. Contacted onstar and remote diagnostics showed no issue. Truck would not start. Towed to dealership. After a week could not diagnose problem. Dealer had GM specialist diagnose vehicle who said required new engine. Claimed metal shavings in oil system but did not specify cause. Engine replaced at manufacturer expense. Did not receive reimbursement for rental car as promised. Dissatisfied with vehicle, traded out after owning for only a year.

Q1: Engine lost propulsion Q2: I was stuck in middle of highway Q3: Yes, engine needs replacement Q4: Dealer Q5: No, check engine light came on once lost of power