The contact owns a 2017 GMC Yukon XL. The contact stated while parked and attempting to start the vehicle, the contact heard an abnormal knocking sound coming from the vehicle. The contact attempted to depress the accelerator pedal however, the vehicle failed to respond as needed. The contact stated that a dealer and an independent mechanic were contacted. The vehicle was towed to an independent mechanic where it was diagnosed and determined that the camshaft was not aligned. The contact was informed that the independent mechanic would be able to align the camshaft; however, if the failure persisted there would be a cost for the repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The contact related the failure to N232430470 — Special Coverage (Camshaft Position Actuator Valve Solenoid — Bank 2 (Left Side) Exhaust); however, the VIN was not included in the special coverage program. The approximate failure mileage was 131,000.