GMC Complaints

Transmission has had shifting, shudder and failure to go into gear from day 1 of owning the truck. Has been to the dealer on several occassions for the same issue just to be told that they either could not reproduce the issue or it was normal. On another occasion the dealer was able to notice some shudder and shifting issue and replaced the valve body under warranty. Now that the vehicle is out of warranty I’m being told the vehicle needs a complete transmission rebuild and torque converter at an out of pocket cost to me of $8500. I know of many others with the same issues from the onset of owning these vehicles.

The contact owns a 2016 GMC Yukon Denali. The contact stated that while driving 40 MPH, the contact was notified by another driver that the rear taillights were inoperable. No warning light was illuminated. Neither a dealer nor an independent mechanic was contacted, and the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that there was no recall on the VIN related to the failure. The manufacturer was notified of the failure and opened a case and referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 104,000.

The contact owns a 2022 GMC Yukon. The contact stated while driving at an undisclosed speed, the vehicle stalled. There was no warning light illuminated. The vehicle was restarted; however, the failure recurred. The contact stated that while attempting to refuel the vehicle, the contact became aware that the fuel tank was inoperable. The contact stated that the fuel tank failed to allow fuel properly to enter the fuel tank. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made of the failure. The approximate failure mileage was 75,000.

The contact owns a 2023 GMC Terrain. The contact stated while driving at an undisclosed speed, the vehicle was shaking and independently shifted into neutral. In addition, the check engine warning light illuminated, and the vehicle lost motive power. The vehicle was taken to the dealer where it was diagnosed with a possible fuel injector failure. The contact was informed that the fuel injector needed to be replaced. The vehicle was not repaired. The contact was informed that parts were on backorder. The contact stated that the failure occurred while on a trip. The contact was advised to contact the local dealer when she returned home. In addition, the contact stated that in December 2024, the high-pressure fuel tank was replaced by the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 35,600.

Transmission Failed at 100,000 miles stalling vehicle brakes pushing back on me.

The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving on the highway at various speeds, the vehicle occasionally shuts off. The contact stated that several unknown warning lights were illuminated. The contact stated that the vehicle was pulled over to the side of the road and restarted. The contact was able to continue driving. The vehicle was taken to a local dealer and was diagnosed; however, the cause of the failure was not found. The contact was informed to take the vehicle back to the dealer if the failure returned. The manufacturer was notified of the failure. The approximate failure mileage was 128,000.

The contact owns a 2023 GMC Yukon. The contact stated that while driving on the highway at 60 MPH, there was an abnormal sound coming from the engine. The contact stated that the check engine warning light was illuminated. The vehicle was taken to a local dealer to be diagnosed and the contact was informed that there were metal fragments inside the engine. The contact was informed that the engine needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The manufacturer was notified of the failure. The approximate failure mileage was 31,000.

The contact owns a 2017 GMC Yukon. The contact stated that while depressing the brake pedal, the driver’s and passenger’s side taillights failed to illuminate as designed. The contact called the dealer about the failure and was informed that there were no recalls or warranties on the vehicle associated with the failure. The contact was also informed that the repair would be an out-of-pocket expense. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 64,000.

On 01/07/2025 I got in my truck to take it to GMC for an oil change and 75,000 mile service. When I began to drive I noticed I could barely turn the truck at all. The power steering was not working. Then a warning popped up to have the power steering serviced. The GMC dealership is an hour from my house. The entire drive the power steering didn't work. I explained what was going on to the GMC dealership and when they went to look at the truck the power steering was working again. When I left the dealership the power steering was working. I stopped at a friends house for about an hour and when I went to leave the power steering was not working again. I ended up having to drive an hour again with no power steering and made an appointment with GMC to get the power steering looked at. Currently they haven't commented on the Power Steering function but rather that there is a gear needing to be replaced in the steering column. Upon looking online it shows "Several model years of GMC Sierra trucks have been subject to a recall for intermittent power steering issues related to electrical glitches within the EPS system." However, my truck seems to not be on this list of affected vehicles but there is no other explanation of why this is happening with my truck and GMC has not commented on why it is happening but it is extremely dangerous.

The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 30-35 MPH in third and fourth gears, the vehicle vibrated and shuddered significantly. The check engine warning light was illuminated. The contact stated that upon shifting out of third and fourth gear, the vehicle responded as needed. The contact stated that the failure progressively worsened while driving in third and fourth gear. The vehicle was taken to Wyatt's Automotive Repair, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 97,000.