GMC Complaints

I have a 6.2 engine that had a number 4 cylinder failure due to a engine defect of the crankshaft. They have recalled the 6.2 motors on the 2021-2024 year models. The 2018 year models with the 6.2 engine should be recalled also bc they are having the same issue. Please help

On or around July 12th 2025 at low speed of 2-4 mph my rear end locked up sending everyone in the vehicle hard stop forward. The vehicle wouldn't disengage leaving me no choice but to have it towed for the second time 1st time happened exactly the same about month and a half prior. Gmc service department department claims they couldn't find anything wrong after it sat for two days in there lot after having it towed they were closed weekends and looked at it that Monday morning finding no signs of anything wrong. After picking up my vehicle I strongly feel like if at higher speeds or even environment this issue will endanger myself passengers and bystanders. I need help with resolving this safety issues asap please. Gmc hasn't been much help service department nor Gm support options.

I purchased my GMC Sierra AT4 from your Oman GMC distributor called Moosa Abdulrehman Hassan. The vehicle suddenly stops and transmission automatically shift from 'D' driving mode to 'N' natural. First it happened when the vehicle driven 200km only when I took it to dealer Moosa Abdulrehman Hassan, they re-programmed the vehicle and doesn't know what the problem is. Second time happened when the vehicle was driven approx. 1,600 km and 3rd time again happened on [XXX], engine stopped and transmission shifted automatically from D to N, I have to start the engine and continue my journey. Again, I brought the vehicle to GMC dealer Moosa Abdulrehman Hassan. They kept the vehicle for almost one week and unable to demonstrate or diagnose the problem and asked me to collect the vehicle. Its high risk to drive the vehicle, when suddenly the engine stops and the gear shift from 'D' to 'N' while driving. I had option to choose, Ford 150 or Dodge Ram I bought GMC because it suppose to be reliable and have the best safety features. But I really regret now why I have purchased it, there are no technicians in Oman with GMC dealer to identify and fix the problem. I can't drive the vehicle in such condition, risking my life and life of other drivers on the road. The vehicle is parked in my Garage, it new vehicle just completed 1800 km. The the dealer the solution is very simple, either fix the issue, or replace the car or refund my money back, the dealer is not doing any of these. Before taking legal action and reporting it to the court, which will bring shame to GMC reputed brand. I though I'll give my final try to report it to you. You are the manufacturer may be have a solution. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When vehicle is placed in park, it is still showing a "shift to park" message once car is turned off.

The contact owns a 2021 GMC Yukon. The contact stated while driving 40 MPH, the vehicle unexpectedly stopped, and the engine seized. The contact stated that there was not enough power from the engine to drive the vehicle to the shoulder of the road. No warning light was illuminated. While attempting to restart the vehicle, the vehicle failed to restart. In addition, the contact stated that his family were occupants of the vehicle during the failure. The contact stated that it was a frightening event for his family. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was informed that parts were unavailable to repair the vehicle. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000. VIN tool confirms parts not available.

The contact owns a 2021 GMC Sierra 1500. The contact stated that there was an abnormal change with the RPM. There were no warning lights illuminated. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The dealer received an email from the manufacturer, but the verbiage was incorrect to move forward with the repair. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 39,000. VIN tool confirms parts not available.

The contact owns a 2024 GMC Sierra. The contact became aware that the VIN was included in NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The dealer was contacted and confirmed that parts were not yet available for the recall repair. 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. VIN tool confirms parts not available.

The contact owns a 2024 GMC Yukon. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that occasionally while driving at various speeds, the vehicle temporary lost automotive power. No warning light was illuminated. 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 made aware of the failure. The failure mileage was approximately 18,163. VIN tool confirms parts not available.

The contact owns a 2011 GMC Terrain. The contact stated that the vehicle was consuming an excessive amount of engine oil. The contact stated that the vehicle was leaking engine oil. The check engine warning light was illuminated while driving at undisclosed speeds. The vehicle was taken to a local dealer who confirmed there was no warranty or recall coverage on the vehicle for the failure. The vehicle was not diagnosed or repaired. The vehicle was taken to an independent mechanic who determined that the engine might be blown. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 110,714.

my electric power steering has failed more then twice on me, steering wheel pushed back against my efforts to steer. I don't feel safe and I have noticed this has happened to other owners of the 2015 GMC Canyon. I can't afford to repair something that should be a re-call.