GMC Complaints

The contact owns a 2021 GMC Yukon. The contact stated that while driving at various speeds, there was an abnormal knocking sound coming from the engine. There was no warning light illuminated. Prior to the failure, the contact had received a postcard about a potential engine failure linked to the vehicle; however, the contact disregarded the notice. Due to the failure, the contact had the vehicle towed to the dealer. The dealer performed a diagnostic test and discovered metal shavings at the bottom of the engine oil pan. The dealer diagnosed the vehicle with engine failure. Upon investigation, the contact discovered NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) and linked the failure to the recall. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall. The contact was then referred to the NHTSA Hotline to report the failure. The vehicle remained in the possession of the dealer because parts to repair the vehicle were on backorder. The vehicle was not repaired. The failure mileage was approximately 93,000.

The contact owns a 2020 GMC Sierra 1500. The contact stated that upon start the vehicle, the vehicle lost power steering functionality. The messages “Service Power Steering”, “Power Steering Disabled” were displayed, and ESC warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed, and the contact was informed that further diagnostic tests were needed to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 115,000.

Shift to park issue car is in park car is not recognizing it and won’t turn off accessories

The contact owns a 2024 GMC Terrain. The contact stated that while his wife was driving at various speeds, the vehicle experienced a loss of automotive power. The check engine and transmission warning lights were illuminated. In addition, the contact's wife attempted to restart the vehicle; however, the gear shifter failed to move from neutral(N) and remained in Low Power Mode. The vehicle was towed to a local dealer, where it was diagnosed, and DTC: P0700 and P073E were retrieved. In addition, the contact related the failure to Technical Service Bulletin: PIP5974E; however, the VIN was not included. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 6,766.

I have pictures the seat, the airbag in the seat.The driver's seatIt didn't come through the seat, but it deployed or ruptured.But it didn't bust through the seat.It's like a big bubble. I was just driving and I heard a pop but it didn't come through the seat. It left the lump in the seat. I still think it's dangerous, cuz. It's busted.

Truck will down shift and transmission will slam, super hard. feels like i hit something. almost causing accident. dealership refuses to service my truck or even take a look at the transmission because "its not broken yet" in their words " it needs to fail before they can service it or even look at it, because they wont get paid." I have expressed my concerns about this safety issue and at this point they are being negligent. My truck is a 2023 gmc sierra 1500 with 3.0 duramax . still under warranty with only 35k miles.

I received a letter from GMC almost 4 months ago telling me that my 2024 GMC Sierra 1500 was recalled due to an engine safety issue. The letter stated that there was no remedy yet and that a subsequent letter would be sent with instructions on how to have repairs done. I never received a second letter. Also, my GMC app stated that the vin had an incomplete recall. Today the app states that there are no incomplete or completed recalls. I called my dealer and they said they know nothing about the recall and I should just wait. This is unacceptable and I need some type of resolution.

The vehicle has suffered repeated systemic electrical failures all while being under 8,000 miles. What component/system failed? Power distribution/fuse block, starter, fuel pump control module, horn circuit, body control module, instrument cluster, and charging system. Error codes documented include P0627 (Fuel Pump Control Circuit), U0100 (Lost Comm ECM/PCM), B1325 (Control Module Power Low), U0140 (Lost Comm BCM), and B1000 (ECM fault). All repairs are documented by the dealer, and the truck remains available for inspection. How was safety at risk? The truck lost propulsion at speed, emitted smoke from the engine bay, and became disabled in traffic, placing my family, including my toddler, in immediate danger of collision and fire. Electrical defects also disabled horn and instrument cluster, removing critical warning and signaling functions. These electrical issues have been ongoing for months and GM refuses to replace and can't seem to fix it. Has it been confirmed? Yes. Each failure was diagnosed and confirmed by an authorized GM dealer. Components replaced include fuse block, starter, fuel system computer, horn assembly, and cluster. Despite repairs, issues recur. Inspected by others? GM corporate case managers are aware and have acknowledged defects, though they have refused to issue written determinations. Insurance has not yet been involved, but records are available. The dealer has attempted to repaid more than 4 times with no success. Warning lamps/messages? Yes. Prior to and during failures, vehicle displayed repeated “Service Electrical System,” “Low Voltage,” and communication fault codes. Cluster intermittently blacked out. Smoke in engine bay indicated immediate fire hazard. Cumulative out-of-service days exceeding 20. The failures pose unacceptable risk of fire, sudden propulsion loss, and loss of critical safety functions. I have ALL calls with GM recorded and transcribed as I am in SC (single party recording state) and can provide those.

Our GMC engine with VIN# above needs to be recalled due to the failed Active Fuel Management (AFM) lifter which resulted in misfire’s & engine failure. GMC's defective lifters create a safety concern due to potential engine stalling and power loss while driving, which can lead to dangerous traffic accidents. While GM has implemented extended component coverage for some issues and issued a recall for a related problem with L87 V8 engines, they have not with our GMC Sierra with the VIN# listed above, which has the same safety concern. Our GMC is currently at the dealership and we are determining next steps. Thankfully, my husband pulled over on the side of the road and turned the vehicle off before complete power loss. There was not much notification with the engine light prior to the incident. This could have ended very badly with my husband being injured or even worse my three children also being injured.

The contact owns a 2021 GMC Sierra 1500. 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 then received a notice that parts for the recall were available. The vehicle was taken to the dealer, and the contact was informed that the recall remedy was for the dealer to use a higher viscosity oil. The contact expressed concerns that the remedy was not a sufficient repair and that the engine was still vulnerable to failure. The vehicle was repaired under the recall. The manufacturer was not made aware of the failure. The contact had not experienced a failure.