GMC Complaints

Headlight flickering causing vehicles infront of my truck to slow down or break. Been to dealership multiple times for headlight problem. Recent headlight assembly replacement. Headlight flickering still present in truck after headlight assembly replacement. Blind spot indicators intermittently work, on highway, had couple times I relied on indicators that did not illuminate. Dealer could not find issue but same day I picked up truck from service, blind spots weren’t picking up some vehicles either passing or getting passed. Steering wheel noise when turning. Dealer took part steering column, but could not find a problem. Was told it was just sound from motor in steering column. Test drive exact model truck and year, no noise from that truck while turning steering wheel

The contact owns a 2021 GMC Yukon. The contact stated that the vehicle was difficult to start. The contact stated that while his wife was driving 50 MPH the following day, the message "Press Start Again" was displayed. The contact stated that the vehicle then stalled while the driver was pulling to the side of the roadway. The contact's wife was able to pull to the side of the roadway and restarted the vehicle. The check engine warning light was illuminated. The contact's wife was able to drive back to the residence. The contact stated that while scanning the vehicle with a vehicle scanner, the diagnostic trouble code: P129F was retrieved. The dealer was contacted and was provided the diagnostic trouble code: P129F. The dealer confirmed that the failure was related to NHTSA Campaign Number: 21V739000 (Fuel System, Gasoline); however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 33,929.

About every five to six minutes my headlamps will flicker. Googled online and found a forum for Colorado and Canyon owners who are experiencing the same thing. Some people on there have said GM is aware of the problem.

Lights flicker when driving at night. Drivers think I am flashing, flicker causes a distraction on the road. GM service denies the issue. No warnings. Happens every 5 minutes.

The headlights flicker constantly at night. They very quickly power off and back on appearing to other vehicles as if we are flashing our lights. This is a common issue among the 2024 gmc canyons in the facebook owner groups. Its a safety hazard and could also provoke other drivers.

Headlamps flicker intermittently, every 2-5 mins. Common problem and well documented/discussed on owner forums. There was a tsb issued by gm, bit it was rescinded shortly thereafter. No fix is currently known. Headlight flickers cause other drivers to flash their headlights back at you, as well as other aggressive and unsafe behaviors by other drivers.

LED headlamps on both sides of vehicle routinely "flicker" / "blink". The effect is such that oncoming traffic assumes you are "flashing" them or "high beaming" them. Have had several encounters with motorists honking at me or yelling as I pass by. I was also break checked by a vehicle in front of me on the highway when driving at night. These incidents have made driving at night very stressful..... and potentially dangerous. Dealership has been notified and initially stated that they would replace headlamps and ordered those items. I day before my appointment , they cancelled and said that GM was no longer replacing headlamps and was "working on a fix" PIT # 6203A. No time table has been given. This issue is apparently widespread on 2024 Canyons built between March and June of 2024.

Headlights blink or flicker off and on. Both will do it but not at same time. Seems to be only low beams and happens driving or parked. Have been to dealer and they saw it happening. GM is aware and have a bulletin #PIT6203 Headlamp or DRL Flicker or Flash (July 16, 2024) and #PIT6203A ( July 30, 2024 ) Concerns are other drivers or pedestrians think I'm flashing my lights at them signaling to pull out or walk in front of me. I'm afraid one of these times they will not turn back on.

While stopped at a light engine turned itself off with every warning light went off. Glad this didn’t happen with I was driving at highway speed as I lost all systems.

The contact owns a 2014 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 19V645000 (Service Brakes, Hydraulic) however; the contact disregarded the letter. The contact stated that while attempting to parallel park, the brakes failed to operate properly. The contact stated that the brake pedal became abnormally stiff. The contact was able to operate the brake pedal and park the vehicle. The vehicle was then taken to a dealer for a routine oil change, and the vehicle was diagnosed with a non-functional vacuum pump. The vehicle was not repaired. The manufacturer was made aware of the failure; however, the contact was informed that the recall had expired. The failure mileage was approximately 135,000.