Diagnostic Aids

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fault is disabled when Battery Disconnect is active.
Inline 125 A fuse may be open.
It may be necessary to check Testing for Intermittent Conditions and Poor Connections in Wiring Systems.