Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.

Crankshaft Position (CKP) signal is not needed to start and run.
Many situations may lead to an intermittent condition. Perform each inspection or test as directed.

NOTE: Remove any debris from connector surfaces before servicing a component. Ensure gaskets are installed correctly. Gaskets prevent contaminate intrusion.

Inspect PCM and engine grounds for clean and secure connections.
For intermittent conditions, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES - TRUCKS article.