Engine Cooling System problems of the 2021 Chevrolet Silverado 1500

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 70 mph, there was a knocking sound coming from the engine compartment before the vehicle went into "limp mode" and decelerated to approximately 35 mph. The check engine warning light was illuminated. The vehicle was driven to the local dealer, who diagnosed that the engine "crank shaft" had failed and needed to be replaced. The manufacturer was notified of the failure and informed the contact that the VIN was not included in NHTSA campaign number: 25v274000 (engine and engine cooling). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 165,000.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving 70 mph, the vehicle jerked and failed to accelerate as intended while depressing the accelerator pedal. The contact stated that the engine seized. The check engine warning light was illuminated before the failure. The contact was able to coast to the side of the road. The contact stated that the vehicle was towed to midas, where it was diagnosed and determined that the fuel pump control unit had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The contact related the failure to NHTSA campaign number: 25v274000 (engine and engine cooling); however, the VIN was not included. The failure mileage was approximately 57,000.

The contact owns a 2021 Chevrolet Silverado 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 70 mph, the vehicle experienced a loss of automotive power before the engine seized. There were no warning lights illuminated. The contact attempted to restart the vehicle; however, the vehicle failed to restart. The contact stated there was an abnormal burning odor coming from the engine. There were no warning lights illuminated. The vehicle was towed to the dealer where the vehicle was diagnosed, that the rod bearings had failed and damaged the engine. The contact was advised that the engine needed to be replaced. The contact stated that the engine and battery were replaced. The contact stated that on a separate occasion, while driving 70 mph, the vehicle experienced a loss of automotive power before the engine seized. There were no warning lights illuminated. The contact was able to coast to the side of the road. The vehicle was towed to a local dealer. The vehicle was not diagnosed. The contact towed the vehicle to another dealer. The vehicle was towed to a local dealer where the vehicle was diagnosed, and the contact was informed that the engine was faulty and needed to be replaced. The vehicle was not repaired for the most recent failure. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 27,300. VIN tool confirms parts not available.

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while operating the vehicle, there was a popping sound coming from the engine compartment, and the vehicle decelerated unintendedly and started driving rough. The vehicle was driven to the local mechanic who diagnosed an engine cylinder misfire. The mechanic replaced the fuel injector and engine lifter, and the vehicle was repaired. The contact stated that recently while driving, the same popping sound reoccurred, and the vehicle started to lose motive power. The vehicle was towed to the local mechanic who determined that the engine had failed. The exact cause of the engine failure was not determined. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the NHTSA campaign number: 25v274000 (engine and engine cooling). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 42,239.