P1383 Chevrolet Variable Cam Timing Overretarded (Bank #1)

Possible causes

Cam timing improperly set.

Continuous oil flow to the VCT piston chamber.

VCT solenoid valve stuck open.

Camshaft advance mechanism binding (VCT unit).

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1383 Chevrolet Description

The comprehensive component monitor (CCM) monitors the VCT position for over-retarded camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in a retarded position.