NHTSA Complaint #11711669 — 2022 CHEVROLET SILVERADO 1500

Vehicle has experienced repeated internal engine failures related to the exhaust valve lash adjusters and valvetrain. The engine developed abnormal valvetrain noise, misfires under load, and loss of power. The check engine light would only flash during hard acceleration or when passing another vehicle (wide-open throttle), then turn off after approximately 10–15 seconds and never remain illuminated. Because the warning light would not stay on, the vehicle continued to be operated without clear indication of an active or worsening engine failure. Dealer inspection confirmed exhaust valve lash adjuster failure, which led to camshaft and valvetrain damage. This failure has occurred more than once, including after prior dealer repairs. This is a serious safety concern because the vehicle was driven at highway speeds and during passing maneuvers while experiencing internal engine damage and misfires, without persistent warning to the driver. Sudden power loss, stalling, or catastrophic engine failure during acceleration or passing presents a risk of crash or injury. This appears to be a systemic engine defect rather than normal wear, as the failure recurred and was not reliably detected by the vehicle’s monitoring system.