GMC Complaints

The contact owns a 2013 GMC Terrain. The contact stated that while driving 30 MPH, the vehicle hesitated with the check engine warning light illuminated. The contact also stated that while coming to a stop, the vehicle lost automotive power. The vehicle was able to be restarted. The vehicle was taken to an independent mechanic, where it was diagnosed that the engine had failed due to the engine consuming oil. The mechanic informed the contact that the engine could be repaired and suggested that the engine needed to be replaced. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 88,000.

The contact owns a 2019 GMC Acadia. The contact stated that while parking the vehicle, the gear shifter was shifted into park(P); however, the “Action Required Shift to Park” message was displayed. The contact shifted the gear shifter back and forth and then shifted into park(P) before the proper gear was recognized. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and advised the contact to take the vehicle to the dealer for diagnostic testing. The failure mileage was unknown.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle would intermittently hesitate upon depression of the accelerator pedal. The contact also stated that the check engine warning light had flashed on the instrument panel. The contact took the vehicle to an independent mechanic, where the mechanic informed the contact that there was a miscommunication between the engine and the transmission. Two dealers were notified of the failure, and each informed the contact that there were no recalls on the vehicle. The contact was also given a diagnostic fee to determine the cause of the failure; however, the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving approximately 45 MPH, the message "Battery Saver Alert" was displayed on the instrument cluster. The contact stated that the battery gauge was reading 9V on the 12V battery. The vehicle was driven to a dealer. The dealer diagnosed the vehicle and determined that a battery tender was needed. The contact asked the dealer to check the 12-Volt battery which was replaced 2 years prior by the same dealer. The dealer diagnosed the vehicle and determined that the alternator needed to be replaced. The contact was later informed that the battery fuse also needed to be replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 19V888000 (Electrical System); however, the VIN was not included in the recall. The failure mileage was 43,742.

2018 GMC Sierra SLT's electric power steering suddenly stopped working, I almost got killed this issue has been reported by other owners

The contact owns a 2015 GMC Sierra 1500. The contact stated that while the vehicle was parked, the contact’s son closed the front passenger’s side door, and rear window glass exploded. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 163,353.

The contact owns a 2024 GMC Sierra 1500. The contact stated that while attempting to reverse out of a parking space, the transmission failed to respond while in reverse. Additionally, the vehicle operated in LIMP Mode. The vehicle was driven in LIMP Mode to the nearest dealer, who diagnosed the vehicle and determined that the transmission valve body was faulty and needed to be replaced. The transmission valve body was replaced. The vehicle was towed back to the residence from out of state. The manufacturer was notified of the failure. The failure mileage was 6,400.

The contact owns a 2025 GMC Sierra 1500. The contact stated that while at a stop light waiting to make a left turn, the vehicle stalled. The vehicle failed to restart. No warning lights were illuminated prior to the failure. The contact stated that the failure was related to NHTSA Campaign Number 25V274000 (Engine and Engine Cooling). The vehicle was towed to the local dealer to be diagnosed, and the contact was informed that the engine had seized. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 21,100.

Approximately July 12 2025 while driving to dinner two warnings showed on the Driver Information Cluster (1) Check Brake Assist (2) Check ESC. Took vehicle to dealer the next business day for diagnosis. Service department stated the problem was the EBCM or Electronic Brake Control Module and the parts are on a Nationwide backorder. Since the part failure all brake system associated lights on the gauge cluster are illuminated and non of the associated safety systems are functional including but not limited to ABS, Stabilitrak, Lane Keep Assist, Adaptive Cruise, Crash Avoidance or standard cruise control.

The contact owns a 2022 GMC Sierra 1500. The contact stated that while driving 60 MPH on the highway, the front grill detached. No warning light was illuminated prior to or during the failure. The local dealer was contacted and placed a special order for the part; however, the contact had not received an update from the dealer after several months, and the vehicle remained unrepaired. The manufacturer had not been contacted regarding the failure. The current mileage was approximately 90,000. The failure mileage was approximately 20,000.