NHTSA Complaint #11549261 — 2011 CHEVROLET SILVERADO

The contact owns a 2011 Chevrolet Silverado. The contact stated that while driving at an undisclosed speed, she heard a loud abnormal tapping sound at the hood of the vehicle. The contact then stated that upon inspection, she noticed that the tapping sound was coming from the lifter and lifter arm when the piston dropped down. The traction control warning light was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the pistons, rocker arm, head valve seals, and lifter arm needed to be replaced. The vehicle was repaired however, the failure recurred. The contact then stated that upon research she was informed that the engine may need to be replaced. The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 260,000.