GMC Complaints

Headlights flicker (on/off) very rapidly, independent of each other, at random times.

This has now happened twice. While driving down the road, my radio has went to full volume and continues to go back to full volume, even if I twist the volume control knob quickly to lower the volume. This is a very scary situation while driving down the road and your radio goes to 100% volume out of the blue. There is no warning and the volume just goes to 100%

The contact owns a 2016 GMC Canyon. The contact stated that while driving at approximately 45 MPH, an error message for the “Stabili-track” failure was displayed on the instrument panel. Additionally, the contact stated that the failure had occurred several times before. The contact stated that several unknown warning lights were illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the vehicle needed an alignment and steering rack replacement. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 48,000.

The contact owns a 2017 GMC Acadia. The contact stated that after parking the vehicle and shifting to park(P), the vehicle failed to shut off when the START/STOP button was pressed. The cause of the failure was not yet determined. The manufacturer and local dealer were contacted regarding the failure, but no assistance was offered. The failure mileage was 36,000.

Had the torque converter replaced at around 58,000 miles because of shutter in transmission. At around under 100,000 miles I called the dealership back up because the shutter is back again and now my NEW torque converter is bad. They said they only had a 25,000 mile warrantee on the new converter and I was out of my replacement window for warrantee. Everything online says torque converters can last well over 150,000 miles and sometimes even the entire life of a vehicle. I have now had two replaced. By searching online for info about this it is CLEARLY a known problem with these vehicles and gmc isn’t doing anything about it.

The headlights flicker on and off frequently (every minute to two minutes). This put my safety at risk for not being able to see the road clear and causing a acident. It puts other drivers safety at risk because they get flashing lights pointed at their windshield and can cause and accident. It is also a safety risk because other drivers assume the flickering is being done by me the driver on purpose and I am concerned it will start road rage or another driver to escalate thinking I am road raging at them. Dealer is aware of the problem. No warning lamps. Started with 40 miles on the truck.

The contact owns a 2017 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle unintendedly decelerated. The vehicle hesitated and was shaking abnormally while accelerating. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the engine had failed due to the pistons misfiring and then collapsing. The contact was informed that the engine needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 99,000.

The contact owns a 2018 GMC Terrain. The contact stated while driving at an undisclosed speed, the contact became aware that the horn was inoperable. There was no warning light illuminated. The vehicle was taken to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was not available.

The contact owns a 2016 GMC Acadia. The contact received notification of NHTSA Campaign Number: 23V334000 (Air Bags); however, the part to do the recall repair was not yet available. 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 not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

Headlights have an intermittent flicker that happens every 2 to 3 minutes. This flicker is a complete shutdown of the headlight for a fraction of a second, but long enough to notice and have other people in other vehicles notice as well. It is repeatable, and has been repeated by the dealer. It puts my safety at risk. Dealer stated and produced a bulletin that states they are aware of the problem, but do not have a fix for it yet. Bulletin is PIT6203A.