Car Will Not Accelerate problems of the 2009 Chevrolet Silverado

The contact owns a 2009 Chevrolet Silverado. The contact stated that while driving at 65 mph, the door ajar warning chimed before the power doors locked and unlocked independently, the gauges fluctuated and the instrument panel illuminated. In addition, the vehicle failed to accelerate when the accelerator pedal was depressed. The failure recurred intermittently. The vehicle was taken to an independent mechanic where it was diagnosed but the cause of the failure was not determined. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 70,000.