GMC Complaints

Just purchased this vehicle, at 84000 miles had engine failure and electrical issues while traveling down interstate with my family. Lost power steering and all warning lights popped up. Safely exited busy interstate -- avoided major accident. This engine should have been included in the recent GMC recall - After a diagnostic $7000.00 plus to fix. UNSAFE ENGINE ISSUE!! Please help the consumer!!

The check engine light came on and the fan ran at full speed. The engine light is for a faulty coolant control valve which I've been told is a known issue and is on national backorder.

Was driving vehicle on freeway at normal speeds and the vehicle lost propulsion. Engine was off and vehicle said to shift to neutral and restart. I was able to exit the freeway safely (barely) to the median. Vehicle would not restart. It has the L87 engine which is under recall. Vehicle is at dealership submitted under the recall. I am being told there is "no remedy" and "no parts" and given no timeframe for any fix to be completed. I am still liable for the payments, insurance and this is our only vehicle in a single father of three family.

The vehicle will crank and not start. Dealership said they cannot replicate the fault. Same problem occurred after with dealership not helping. I am a US Soldier currently stationed in Germany and continue to have the same problem every 2months. It will crank and not start. The truck will start on the second attempt after cranking for about 20seconds. The continued issue can permanently damage expensive repair parts that I will not be able to afford. I know I am not the only one with the same issue as I have talked to others and have no solution for this.

The contact owns a 2025 GMC Terrain. The contact stated while driving at an undisclosed speed, the infotainment system displayed a blank screen. The contact pulled over to the right side of the road into a gas station and turned off and restarted the vehicle, and the infotainment system displayed a message "Update Failed - See Dealer to Restore System". The dealer was contacted. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

The contact owns a 2020 GMC Terrain. The contact stated while driving 45 MPH, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to the dealer, who determined that the engine had seized. The contact was informed that the engine needed to be replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was again towed to the dealer, who again diagnosed a failure with the engine. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was unknown.

The contact owns a 2022 GMC Yukon. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was unavailable. The vehicle was taken to the dealer but was not diagnosed or repaired. The dealer 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.

GM recently recalled over 500,000 car engines. The warning signs to look out for was a “knocking” sound coming from the engine. I had recently experienced the same issues that the recalled car engines were experiencing. I went to get it checked out and my mechanic said there were chunks of metal in the engine. The GM engine recall should include 2017 GMC TERRAINS SLT. If I had not got it looked at, it would have caused an accident that would have been unpreventable due to the warning signs of only the knocking sound. No other lights had came on in the car. Please consider putting this make and model in the engine recall! If someone reaches out to me, I have the name of my mechanic that can verify the engine issue of my GMC.

Vehicle would not go in Reverse. Rear tires locked up. When I went forward an error came up "Reduce acceleration" and went into limp mode while driving down the highway and shifted hard and almost caused an accident. Bought into dealer and they found that it needs a valve body assembly Part which is on backorder with no ETA. Currently been waiting for a month and still no ETA on Part. This should be a recall for 5.3L 10 speed. .

Abrupt engine failure associate with connecting rod - very similar to current t recall on 2021-2024 Yukons.