2024 GMC SIERRA 1500 Complaints

The contact owns a 2024 GMC Sierra 1500. The contact stated that while vacationing in Canada and driving at various speeds, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. In addition, the RPM fluctuated, and the engine revved abnormally. The contact stated that the vehicle failed to reverse(R) as intended. The contact was able to coast to the side of the road while in LIMP Mode. The vehicle was towed to a dealer, where it was diagnosed, and it was determined that the transmission had failed and needed to be replaced. The contact was informed that when the dealer contacted the manufacturer to order a new transmission, the manufacturer refused and informed the dealer to repair the current transmission. The vehicle was repaired. The contact stated that a week later, the vehicle experienced another failure. The contact stated that on a separate occasion, while approaching a stop sign, the brake pedal was depressed, and the engine revved unintendedly. The contact used force to depress the brake pedal. The failure persisted. The vehicle was taken to a dealer back in the USA; however, no cause for the failure was found. The vehicle remained at the dealer unrepaired. The manufacturer was notified of the failure and was awaiting the results of the diagnostic test. The failure mileage was approximately 9,000.

On [XXX] while traveling on a highway, the vehicle lost drive power—the gear selector would not remain in Drive and reverted to Neutral for approximately 10 minutes. This created a serious safety hazard due to sudden loss of propulsion in moving traffic. The event was captured by OnStar, which emailed an automated incident alert. I later received a GM safety recall notice concerning potential engine loss of propulsion for vehicles with the 6.2L L87 engine (NHTSA 25V-274 / GM N252494000/001/002). I presented the vehicle to Ewing Buick GMC (Plano, TX) on July 23, 2025 for recall service and retrieved it on July 28, 2025. Approximately one week later, during an interstate trip to Kansas City, the engine catastrophically failed about one hour from my destination, leaving the vehicle disabled on the roadway shoulder. Roadside assistance towed the truck to Briggs Auto (KS). Briggs Auto diagnosed engine failure and ordered a replacement engine. I was informed the engine is on back-order with no estimated arrival, and the shop is under-staffed, prolonging repairs. The vehicle remains out of service. The sequence—pre-recall loss of propulsion, post-recall service, and then engine failure within a week—shows a serious safety defect that can lead to sudden loss of power at highway speeds, risking a crash. Frequency: Loss of propulsion occurred at least twice (March highway incident; subsequent engine failure in early August). Warning Lights/Messages: [Gear refuse tom shift to Drive mode.] Injuries/Crashes: None, but risk was substantial due to sudden power loss. Dealer Involvement: Ewing Buick GMC (recall visit); Briggs Auto (diagnosis/engine order). Attachments/Supporting Docs: OnStar email, recall notice, repair orders, tow documentation, photos/video. Please investigate whether 2024 GMC Sierra trucks with the 6.2L L87 engine continue to pose a loss-of-propulsion risk after recall service and whether parts shortages/back-orders are delaying effective remedy INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION

My wife and I were traveling on a county road and without warning, the vehicle skipped twice and cut off in the middle of the roadway in a sharp curve with rain threatening at approximately 7:30 p.m. ET August 11, 2025. I attempted to restart numerous times because we were in the middle of the right lane. The starter would spin but vehicle would not restart. The truck then would not shut off and draining the battery. I called for a wrecker and the Sheriff's Office to keep somebody from hitting us. Before the wrecker came, we connected a diagnostic device to the vehicle indicating it was the fuel pump module.0August 12, 2-25, I called GM Roadside Assistance to be towed to closest dealership. The driver said he was familiar with a lot of GM trucks with the same issue. The vehicle has less than 12,000 miles and was purchased in June, 2024.

The contact owned a 2024 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the low oil warning light illuminated. After a visual inspection, the contact observed that the engine was abnormally low on oil, though the vehicle had recently been serviced. The vehicle was taken to an independent mechanic, who did not provide a specific diagnosis but observed metal shavings inside the oil filter. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); the VIN was included but the vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 16,000.

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 contact stated that while driving at various speeds, the engine made an abnormal sound. No warning lights were illuminated. The local dealer was contacted. 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 failure. The failure mileage was approximately 11,000.

I have not had an incident yet. However GM itself has told us that the car has a high probability of having a major problem while driving and it has caused numerous injury related accidents. In fact, they will not let us trade the vehicle or sell the vehicle because the car is dangerous to drive. They also have no timeline on fixing the vehicle, which requires an engine replacement. This is also an environmental problem as the temporary mitigation of the problem (I say mitigation because it does NOT solve the problem) significantly changes the fuel efficiency of the vehicle. GM should be forced to let us trade the vehicle back with a solid valuation of our vehicle as if the problem did not exist. No solution short of putting a new engine in the vehicle or allowing us to trade the vehicle in immediately should be acceptable. NHTSA is aware of the problem but for some reason seems to be ignoring it. When VW had an engine problem, which was not a safety hazard, VW made it right. GM has no intention of doing anything about it.

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 contact was concerned that the failure could occur and that the parts were not yet available. The contact stated there was a lot of pressure and worry about what might happen should the failure occur. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the concerns. The contact had not experienced failure.

The contact owns a 2024 GMC Sierra 1500. The contact stated that while attempting to reverse out of a parking space, the transmission failed to respond while in reverse. Additionally, the vehicle operated in LIMP Mode. The vehicle was driven in LIMP Mode to the nearest dealer, who diagnosed the vehicle and determined that the transmission valve body was faulty and needed to be replaced. The transmission valve body was replaced. The vehicle was towed back to the residence from out of state. The manufacturer was notified of the failure. The failure mileage was 6,400.

AS PART OF THE ENGINE RECALL ASSOCIATED WITH MY VEHICLE I HAD A REPAIR SCHEDULED AT PARKS GMC IN GREENVILLE, SC LOCATED ON LAURENS RD. WHEN I ARRIVED AT THE DEALERSHIP THIS MORNING I WAS TOLD THAT THEY HAD THE PARTS AND PROTOCOL BUT COULD NOT REPAIR MY RECALL BECAUSE GENERAL MOTORS WAS AT RANDOM SELECTING VIN NUMBERS TO DETERMINE WHICH ONES THEY WOULD REPAIR. THE SERVICE ADVISOR (KEVIN BLACKSTON) TOLD ME THAT GM WAS FIXING NEW VEHICLES FIRST AND THAT THEY COULD NOT DETERMINE WHEN MINE WOULD BE AVAILABLE FOR REPAIR. I DONT UNDERSTAND HOW THEY CAN SCHEDULE ME IN TO PERFORM THE REPAIR AND THEN REFUSE TO MAKE THE REPAIR STATING THAT THERE IS NO SOLUTIONS WHEN IN FACT THE SERVICE ADVISOR EXPLAINED IN DETAIL WHAT WOULD BE PERFORMED ON MY VEHICLE. HOW CAN GM ALLOW PEOPLE TO BE ON THE ROAD IN AN UNSAFE VEHICLE YET HAVE THE PARTS ON THE SHELF TO MAKE NEEDED REPAIRS. THE OTHER ISSUE I HAVE IS THAT THIS DEALERSHIP IS USING THIS RECALL TO [XXX] CLIENTS. A FEW MONTHS BACK WHEN I WENT IN FOR AN OIL CHANGE THEY SENT ME A TEXT MAKING AN OFFER IF I WAS INTERESTED IN SELLING THE VEHICLE. WHEN I WENT IN TO GET THE VEHICLE APPRAISED THEY TOLD ME THAT THEY COULDNT OFFER ME THE AMOUNT IN THE TEXT MESSAGE BECAUSE THE RECALL HADNT BEEN REPAIRED AND AT BEST COULD GIVE ME ABOUT 9,000 LESS. WHICH SOUNDS LIKE THEY ARE GETTING OVER ON PEOPLE AND MAKING A LOT MORE MONEY OFF OF GMs MISTAKE. I HAVE BEEN WANTING TO SELL MY VEHICLE AND GET ANOTHER VEHICLE FOR A FEW MONTHS AND I AM STUCK WITH THIS POTENTIALLY UNSAFE AND UNRELIABLE VEHICLE WHILE THE DEALERSHIP HOLDS ON TO PARTS FOR OTHER VEHICLES. I NEED ASSISTANCE IN PUSING PARKS GMC TO MAKE THE NEEDED REPAIRS. IF THE ENGINE WERE TO BREAKDOWN BEFORE THE REPAIR IS COMPLETED I COULD BE OUT OF A VEHICLE FOR MONTHS. I HAVE 2 CHILDREN TO GET BACK AND FORTH TO SCHOOL AND WORK THAT HAS TO CONTINUE WITH OUR WITHOUT A GOOD VEHICLE. ANY ASSISTANCE IN THIS MATTER WOULD BE GREATLY APPRECIATED!!!! ALSO I HAVE ALREADY CONTACT GM CUSTOMER SUPPORT INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION A

GMC has been aware of this problem since May 2025. They still do not have a remedy. This vehicle has not been operated for 41 days, since the recall states "The connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and engine failure. If the engine fails during vehicle operation, the vehicle will lose propulsion, increasing the risk of a crash." Letter sent to GMC, but this site is not allowing me to download it. Safety recall N252494000