Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Sonoma, 2003 GMC Safari, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
Engine mechanical conditions may prevent distributor from rotating. Inspect following if distributor rotor does not rotate: A broken distributor drive shaft, worn or broken distributor drive gear, or worn/broken camshaft timing chain and gears. An intermittent may be caused by a poor connection, rubbed-through wire insulation or a wire broken inside insulation.