2024 CHEVROLET SILVERADO 1500 Complaints

In reference to 2024 Chevrolet pickup, 6.2L engine, 10 speed transmission. The vehicle is available for inspection upon request. I believe the transmission is going into "partial lock-up" at full/highway speed. When traveling on highway with cruise control engaged, the vehicle suddenly acts as though the brakes are being strongly applied, slowing the vehicle at a very rapid rate, down as low as about 40 MPH. The vehicle slows quickly enough that the driver and passengers are thrown forward to the extent allowed by the seat/safety belts. The issue terminates itself at various times. The vehicle has been inspected by GM mechanics several times, but they cannot find the problem. There were no warning lamps, messages, service engine lights, etc. This has occurred on at least five (5) different occasions. The first occasion was at approximately 7000 odometer miles. The vehicle now has 25,100 miles. All incidents have been reported to GM dealership mechanics.

This complaint is in relation to the investigation into the GM L87 (6.2L engine) investigation. I own a 2024 Chevrolet Silverado with the L87 engine. I had my truck inspected through the recall a few months ago and the engine passed at that time. The engine oil was changed by the dealer per the recall at that time. On August 23, 2026, I was traveling at highway speeds on an interstate highway when my truck began to lose power, downshifted hard three times and died in the middle of the highway. The truck shifted to nuetral and I was able to coast off the highway into a rest area. I attempted to start the struck but nothing happended. I had the truck towed to a dealer. They inspected it on August 25, 2026 and determined the engine had a catastrophic failure and needed to be replaced. I am currently waiting on a replacement engine

The contact owns a 2024 Chevrolet Silverado. The contact stated that while driving at 69 MPH when the vehicle experienced a total loss of automotive power and all of the warning lights were illuminated; a message was displayed on the instrument panel "Reduce Acceleration, Drive with Care" and the vehicle was towed to a local dealer where it was diagnosed and the contact was advised that engine had experienced catastrophic engine failure as a result of the pistons and rods exploding into the engine, and that the engine would have to be replaced. The vehicle was repaired, however the check engine warning light had remained illuminated. The manufacturer was notified of the failure. The failure mileage was 7,948.

The engine has a loud knock and tick noise, the dealership said vehicle was fine changed the oil to a thicker oil and sent me on my way. No messages or symptoms besides the loud noises engine still running but has loud knock and tick noise from time to time after the oil was replaced

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the vehicle stalled on several occasions. No warning light was illuminated. The vehicle was restarted and drove as intended. The vehicle was taken to the dealer several times, but no repair was performed. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling), and the vehicle was taken to the dealer for the recall repair; however, the dealer informed the contact that the manufacturer denied authorization to perform the recall inspection. The dealer informed the contact that the failure appeared to be associated with the recall and replaced the engine oil with a higher viscosity oil. The contact was provided a work order confirming that the recall repair was not completed. The manufacturer was notified of the failure and referred the contact to another dealer. The vehicle was taken to Mac Haik Chevrolet (11711 Katy Fwy, Houston, TX 77079); however, the stalling failure could not be duplicated, but there were abnormal engine sounds confirmed. The second dealer requested authorization to disassemble the engine, but the manufacturer denied the request. The contact stated that the manufacturer failed to honor the recall repair, denied a buyback request, and offered monetary compensation, which the contact declined. The vehicle was not repaired and was traded in. The failure mileage was approximately 5,000.

Engine shut down. Last thing I saw on my screen was engine oil hot engine shutting down and engine shut down and had no electrical power.

2024 Silverado ZR2 with the 6.2L engine was involved in the GM safety recall N252494003 for L87 Engine Loss of Propulsion. Vehicle taken to local dealership where inspection was performed. Passed inspection on 11/11/2025 resulting in the dealership changing to higher viscosity oil per safety recall instructions. 27,000 miles on vehicle at time of recall inspection. On 2/24/2026 was using the on ramp to get up to speed on the interstate. Got vehicle up to 70 mph and suddenly without any warning had loss of propulsion and vehicle began to decelerate quickly in front of a tractor trailer. Fortunately the semi driver was able to swerve around me as I pulled the vehicle off to the side of the road. Vehicle towed to the dealership where I purchased the truck and diagnosed with engine failure. Multiple bearings went out sending metal fragments throughout the engine. Vehicle had 28,500 miles at time of failure. Dealership had truck for roughly a month to perform complete engine replacement. Truck currently has 32,000 miles on it and seems to be running okay. We have lost some trust in the GM brand after this whole issue. Another uneasy problem is that my wife’s 2025 GM SUV has the same 6.2L engine in it. We bought my wife’s vehicle in May of last year and are unable to move out of it due to being in negative equity at the moment with that vehicle.

Had the Motor replaced under recall / warranty at a certified chevy dealer. ~41k miles. 6.2L L87. GRAFF chevy of Chesterton Indiana. After long lead times and getting the run around, the truck was "done". picked it up and many things were still wrong/incorrect. They were able to take care of it. A day later, the truck died in the road. towed to another GRAFF dealer. 2 days later it was found to be a bad ground. fixed. Fast forward ~3k miles later. the transmission went out and locked up on a main roadway. Towed to another dealer (West Herr chevy Orchard Park NY). They found the root cause was due to transmission cooler lines coming loose from faulty installation during motor swap. There were also many other items found that were broken or loose under the hood of the vehicle from faulty workmanship. I am being told it is not covered under warranty because of the previous dealer's workmanship (GRAFF Indiana) I was able to get the truck put of the roadway and to a safe place, but this very well could've caused an accident, and I would like to document it.

Vehicle suddenly stalls and reduces speed at different times with no warning. At first it would show that message after car washes or rainy days but now randomly it’ll reduce speed in unexpected moments causing safety concerns. It reduces speed, stalls, drives forcefully, and shows a “reduced acceleration drive with care”. Sudden stalls have become a danger to my family and myself as we depend on this car to get to and from on a daily basis. Dealership states it’s the TCM but not covered under warranty. But the vehicle is new how is it that it already has defects

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving 45 MPH uphill with a boat hitched on a trailer, while depressing the accelerator pedal, the engine overheated and the vehicle was pulled over and the idol warning message was displayed. The contact pulled over to the right side of the road, however the vehicle lost power with the boat trailer wheel still on the highway. 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 failure mileage was 21,000.