2024 GMC SIERRA 1500 Complaints

The contact owns a 2024 GMC Sierra 1500. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that parts were not yet available. 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.

While exiting the highway and transitioning into a turn lane, my 2024 GMC Sierra AT4 (with 12,887 miles) suddenly and completely shut down without any prior warning. All vehicle systems—including electrical—failed simultaneously. This included the dashboard, steering assistance, and emergency lights, which significantly compromised my safety. I was unable to alert surrounding drivers or move the vehicle out of the traffic lane. There were multiple cars behind me, and I was placed in an extremely unsafe situation due to the sudden loss of control and inability to signal or restart the vehicle. I immediately contacted emergency services, and a police officer arrived approximately 10 minutes later to assist. Roadside assistance later pulled diagnostic code P0016 from the truck’s computer. I have since learned that this code corresponds to a known engine timing defect and is the subject of a recent GMC recall issued just days prior to the incident. The failure occurred without any warning lights, messages, or symptoms beforehand. The vehicle is now with a GMC dealer and is available for inspection upon request. To my knowledge, the issue has not yet been independently confirmed, but I believe it is directly connected to the recalled component.

On April 23rd, while traveling, I began hearing a loud, metal on metal knock. My truck began to lose all pulling power. I had no engine warnings, no check engine lights or any other indicator of engine trouble. I pulled to the side of the road and exited the vehicle. It was then I realized it was my engine making the noise. I have since had it towed to the dealer where it sits while I wait to hear back from the service department a final diagnosis. I was told this was most likely a rod or bearing. On Friday April 25, I was told of the recall. I was told I would probably need a new engine but they haven't been instructed on what the next step would be from GM.

I leased a 2024 GMC Sierra 1500 Denali Ultimate with the 6.2L V8 engine. The vehicle experienced multiple engine-related issues over time, including stalling on [XXX], and again in early 2025. On [XXX], the engine completely failed while I was driving on the highway. The truck suddenly shut down, forcing me to pull over in a dangerous situation. It was towed to North Bay Cadillac, where they confirmed the engine needed to be fully replaced. They also stated this issue is related to a known engine defect affecting 6.2L engines across GM vehicles. The vehicle has been in the shop for extended periods and is currently undergoing repairs estimated to take over a month. GM provided a loaner vehicle after 12 days, but I remain financially responsible for a defective truck that posed a serious safety risk. No warning lights were present before the failure. I am requesting that this issue be formally documented due to the severity of the safety hazard and the widespread nature of this engine problem. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Twice in the last few weeks my tailgate has opened while driving the vehicle. Prior to this, the tailgate has never dropped while driving since the vehicle has been new. The tailgate was not down whenever I left, but it was down whenever I got to my location. I did not hit the tailgate button to drop the tailgate at any time before during or after this trip. On the one occurrence, items were lost from the bed of the truck, which could cause a road hazard for other motorists. There were no warning lights or notifications that the tailgate was open on the driver information center or elsewhere. I have service scheduled with the dealer on 5/2/25 to inspect the vehicle. I am unsure at what point in the trip the tailgate opened.

At approximate 36700 miles. Upper top molding piece next to the grill, flew off while driving down the highway at 75mph hit my windshield and cracked it. Lucky no one was flowing me. This is the second one that's has broken. The first time was driving in South Dakoda the day after I purchased the truck and one side broke so I was able to stop at a truck stop and duck tape it until I was able to take it to the dealer. This seams to be a flaw, because read this has happen to multiple truck of the same model.

In the midst of driving my vehicle, soon after exiting the expressway. I received a notification across the dashboard stating to press the brake to start engine. It was totally confusing because I was actually driving and doing so at a speed of approximately 45 miles per hour because I just exited the freeway. Then I noticed the car would not accelerate. At that point I realized that my car had shut down on me while in the midst of driving. I had to very cautiously maneuver my way through traffic to the side of the road where I parked and called onstar for help. This was a very scary moment because I felt as if I could have very easily caused an accident and injured or cost the life of myself or an innocent person. The engine shut down was not evident because all the dashboard lights were still functioning as normal. I don't feel safe driving the vehicle and would very much like to replace with something else, but I feel stuck with it. Dealership says that the vehicle depreciation for one year was $10,000.00 and that I will have to roll that 10k into the price of any new vehicle if I wanted to get out of the current lease. That makes the purchase of newer, safer vehicle unaffordable for me, so again I feel stuck driving something that could have very easily cost me my life.

The contact owns a 2024 GMC Sierra 1500. The contact stated while stopped at an intersection attempting to make a left turn, the vehicle lost power and the infotainment center failed to operate. The contact stated that the vehicle was on the left side of the roadway waiting for Roadside Assistance for the vehicle to be towed to the dealer. A dealer was contacted. The vehicle was towed to the dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 50,000.

Engine exploded. No warning just quit running while cruise control set, just had a thump and started to slow down as engine quit running. Caused a problem as road had no shoulder. Had to be towed to dealer for engine replacement.

Vehicle was purchased new in December 2023. In January 2024, with 110 miles on the vehicle the engine blew. Took over a month to get a new engine installed. In March 2025, with 14,500 miles on the vehicle, the engine blew again, This time i was traveling on a busy New York parkway with my [XXX] grandson. Luckily i was able to coast off the parkway without incident. I am now still awaiting a third engine to be installed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)