Diagnostic Aids

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Check for an open in battery feed circuit to the Inadvertent Power Relay or an open CTSY LP fuse.
Refer to TESTING FOR INTERMITTENT & POOR CONNECTIONS .