Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. 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 .