NHTSA Complaint #11658261 — 2021 CHEVROLET SILVERADO 1500

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving 70 MPH, the vehicle made an abnormal knocking sound. The contact exited the freeway and continued driving 40 MPH; however, the vehicle stalled, and several unknown warning lights were illuminated. The vehicle failed to restart and was towed to the dealer, where it was diagnosed that piston #4 valve had seized, causing damage to the push rod. The dealer took the engine apart and replaced the push rod, the valve, and the head gasket. The contact stated that the failure occurred while driving 70MPH. The vehicle was towed to Team Hodges, INC. Chevrolet (2265 M-76, West Branch, MI 48661), where it was diagnosed that piston #8 valve had seized, causing damage to the camshaft. The dealer replaced the valve, the camshaft, and other unknown parts. The vehicle was repaired. The contact related to the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall. The failure mileage was approximately 10,000.