GMC Complaints

Headlamps flickering. At first the automatic high beams were causing an issue so I turned that off then it was the headlamps while running normal continue to flicker while driving.

The headlight assemblies randomly flicker, and occurs while driving and while parked. It includes the HID headlights and the LED daytime running lights. The dealer has confirmed that the issue exists with this model vehicle; however, there is currently no fix.

I get a recall notice from GM but the dealer won't do the repair without me signing a waiver for any damage they may cause to the dashboard during the recalled airbag removal. Can anyone get GM dealers to do the necessary repair and have accountability for any damage they may do?

The car shutdown mid-driving do due to a power system issue, which was dangerous on the highway. I had the car battery and the alternator replaced and it did the same thing again 8 months later. Says the battery system needs servicing

I was hauling a load and felt a hard jolt near the transmission. The pickup went into limp mode and would not let me accelerate above 45 mph. Took it to a dealership and was told the valve body had malfunctioned. I have been without a vehicle for over 40 days due to the part being back ordered.

Transmission making a shuttering feeling while driving. Felt in the steering wheel. Dealer said it’s not covered unless still under powertrain warranty. No check engine light while happening. There was a pending code about transmissions control module.

The contact owns a 2017 GMC Acadia. The contact received notification of NHTSA Campaign Number: 23V334000 (Air Bags); however, the part to do the recall repair was unavailable. 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 Flickering frequently while driving or parked. Causes other drivers in front of me to think I am high beaming them or flashing my lights at them. Causes quick moments of darkness and is disorienting when driving at night. No warning lights or signs of damage. This issue has been reported by many other vehicle owners and currently GM has not published a solution. Other vehicle owners reported that dealerships did not resolve the problem after replacing the headlight module and updating firmware. The solution is believed to be to replace the headlight assemble due to bad diodes during manufacturing. Headlights have done this since I bought the car.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while his wife was driving 25 MPH, the vehicle made an abnormally loud sound and the front driver's side wheel detached. The vehicle came to a complete stop. The vehicle was towed to the dealer, where it was diagnosed that the upper control arm had disconnected from the steering wheel ball joint, and it was determined that the upper control joint, steering wheel column, and front driver's and passenger's side wheel needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had received an alignment twenty days prior to the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 70,000.

The truck disengages the 5th wheel trailer brakes. The DIC states "Trailer brakes disabled - service required". I intermittently lose trailer braking capability.