Diagnostic Aids
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Condition could be caused by short between circuits 349 and 354 or 1409 and 1834. An incorrect EFS or an open or high resistance in any circuit could also cause condition.
NOTE:
For circuit number and wire color identification, see WIRING DIAGRAMS .