GMC Complaints

The headlights will flicker for a split second every 1-5 minutes, affecting both headlamps. While this issue does not make the car unusable, it is not expected of a brand new vehicle and could be interpreted by other drivers as aggressive signaling that leads to potential road rage escalations.

This is the second time after already bringing in for service, while driving turning on the radio the volume goes to full volume with a Bose system it is ear piercing, none of the radio controls worked, I could not shut off the radio or turn the volume down it was locked at full volume. I had to stop in the middle of the road in Cambridge MA, Place in park, shut the engine off and open the drivers side door to shut the radio off, it took four attempts of restarting and stopping vehicle before the volume would return to normal. This is a severe SAFETY HAZARD THAT WILL EFFECT HEARING AND CAUSE AN ACCIDENT, I AM SO FED UP WITH THIS VEHICLE. I need to schedule another appointment for GMC to do nothing.

Headlights intermittently flicker. It causes other drivers to focus on my vehicle. It also cause me to focus on the issue more than actually driving the vehicle. It could cause issues with road rage. To my knowledge GM is aware.

The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds, there was a whining sound coming from the transmission. The vehicle was taken to the local dealer who diagnosed and determined that the transmission was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under the Extended Warranty for the failure. The failure mileage was 86,000.

When On, the normal beam headlights randomly flicker off and back on very quickly. This occurs when headlight control is in "Auto" or "Manual On". Its periodicity varies. The flicker is so fast that driver visibility is not impacted much at this time. However, on coming vehicles and vehicle in front of my truck are getting lights flickered at them. This can lead to confusion, annoyance and road rage. The primary impact is getting brights flashed towards me, which does inhibit my vision for a time.

The contact owns a 2014 GMC Terrain. The contact stated that while his wife was driving at an undisclosed speed, the vehicle stalled. The contact stated that his wife was not aware of any warning lights being illuminated. The contact stated that his wife was unable to restart the vehicle, and had the vehicle towed to the residence. The contact called an independent mechanic to the residence who diagnosed the vehicle and determined that there was oil leaking into the engine block and cylinders. The mechanic determined that the positive crankcase valve (PCV) had failed and needed to be replaced and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 105,000.

The contact owns a 2016 GMC Canyon. The contact stated that while his wife was driving approximately 70 MPH, the power steering suddenly failed, and the steering wheel became difficult to turn in either direction. During the failure, the message "Power Steering Failure" was displayed. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 51,867.

When towing our 5th wheel RV we started getting messages on the computer that the trailer brakes were not working due to an issue with the brake controller. Trailer brakes would come and go. The only time we got notification was when towing. Only 20 minutes after getting the first notification we were involved in an accident due to the trailer brakes not working. We thoroughly had the trailer brakes and plugs checked and they are not the problem .

My headlights keep flickering immerdiently, it doesn't matter if they are on auto or manually. I called the dealership I purchased it from and they said there is nothing they can do until they receive a resolution from GMC. This poses a safety hazard at night. Not only that, people keep thinking I am flashing my lights at them.

The Shift to Park feature malfunctions. Although my car is in Park it does not recognize it, gives me a 'Shift to Park' message and won't allow me to shut off the car. My car not correctly recognizing what gear it's in is a significant danger. This problem was a recall in 2017-2018 GMC Acadias but my car produced the same issue and was not recalled. The component was replaced by an IG Burton dealer. There were no other warning messages prior to the issue occuring.