GMC Complaints

1. Valve Lifter Failure 2. While entering the [XXX] freeway and trying to merge into traffic the engine lost power and I had to swerve and brake to avoid an adjacent vehicle, and freeway traffic had to avoid my slowing down to pull over. 3.Yes, Van GMC in Scottsdale, confirmed lifter failure. 4. Yes, GMC Dealership 5. Absolutely no warning given INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Engine consuming extra oil due to failed piston ring. Also, may be the cause of a coolant failure code. Burning through excessive oil and check engine light came on. Also, prior to these warnings, I've felt hesitation when accelerating and when the car changes gears. I was told by a shop that I need a new engine. This causes a dangerous situation because the car could just stop working while driving or in traffic.

This is regarding a safety recall and no parts being available at this time. I have contacted GM and the Bergstrom dealership multiple times without receiving answers. The original letter I received was from 6/2023. Please let me know if there is anything that can be done - GM should have to provide parts within a timely manner - 8 months and counting is far from acceptable when the letter states "may cause injury or death".

The contact owns a 2020 GMC Sierra 1500. The contact stated while detailing the rear interior of the vehicle, the contact discovered water surrounding the rear windshield casing and the water was leaking into the rear seating. Additionally, the rear carpet was soiled with water. The contact used towels while attempting to soak up the water. The vehicle was taken to the dealer where it was diagnosed that the failure was due to the failed rear windshield glass fasteners. The contact was informed that the failure had damaged the rear carpet, padding, and the rear seat. In addition, the contact was informed that the carpet and padding needed to be replaced due to mold build up. The contact was informed that the vehicle was out of warranty coverage. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 31,000.

2023 GMC 1500 Sierra Denali Ultimate tailgate opens without being commanded. This has happened approximately six times with damage to the tailgate in the last incident on 2/8/2024. There were not any warning lights. Safety is affected by having an open tailgate and cargo potentially leaving the vehicle. I have seen a recall pending for the same issue however seems to be limited to 2500 / 3500 series vehicles.

The contact owns 2018 GMC Sierra 3500. The contacted stated that while the vehicle was parked in the driveway, the vehicle started and the defrost system was activated and the contact's daughter entered the vehicle and saw that it was smoking and informed the contact. When the contact arrived at the vehicle, the rear window had shattered. No warning light was illuminated. The vehicle was not taken to the dealer and was not repaired. The contact referenced GMC Customer Satisfaction Program Number: N192220470 (Faulty Rear Defrost Circuit) as a possible solution however, the VIN was not included in the recall. The manufacturer was not made aware of the failure. The approximate failure mileage was 70,000.

After I purchased the vehicle in 2 months I was losing oil. I continued to add oil as needed even after oil changes. About 1 year after purchase while traveling the engine just blew. Causing me to swerve out of traffic until I could find a place to stop. The result a blown engine which cost 4000 to rebuild

Vehicle had a body control module issue dealer repaired but issues never went away I did not buy the car with the tailgate opening randomly

Blind zone detection system and door latch system failures. The blind zone detection system is inconsistent and at times remains on with bright lights impairing the drivers ability to see at night. With this inconsistency the driver cannot rely on it properly detecting vehicles within the blind spot. Another known issue is the inability to put down windows with the drivers side door. The alert for this is to service the door latch system which typically comes on while driving the vehicle. This limits the driver being able to safely respond to traffic stops from emergency personnel as well as the ability to evacuate the vehicle through the window if necessary. The dealers that have reviewed these issues say they cannot replicate or fix them.

While driving my vehicle, check engine light came on. Then, my car proceeded to flash about 4 warnings on the dash, Fuel Level Low (had half tank of gas), Engine Power Reduced, Service ESC, and Service Transmission. My vehicle shut itself off while driving 55 down a main highway and put itself into park. Forcing me to pull over and be stranded on the side of the road. In the way of other cars, with no way to get out of the way. I then had to shut car off, wait, and start it back it up. However, after the first time this happened, I cannot drive my vehicle more than 15 to 20 minutes without it doing this to me over and over again. To make matters worse, I am 37 weeks pregnant, and the last thing I need is to be without a car. I also had just gotten my vehicle inspected and an oil change the week before, with no issues to show. The only thing I did to my car before it did this, was remote start my vehicle, which I do every single morning and have for the little over a year I've owned this car. Also, my car has less than 60,000 miles on it!! The mechanic who is currently working on fixing this issue for me, has concluded it to be a throttle body, or the actuator of the car.