Diagnostic Aids

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix, 2002 Chevrolet Malibu, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Inspect for the following conditions:

If the engine runs okay, inspect for a malfunctioning MIL, an open in the MIL control circuit, or an open in the instrument cluster (IC) ignition feed.
If the engine cranks but will not run, inspect for an open PCM ignition or battery feed or a faulty PCM to engine ground.
PCM and engine grounds for clean and secure connections.