Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

This DTC may be stored as a history DTC with out affecting the operation of the module. If stored only as a history DTC and not received as a current DTC, do not replace the module.
If this DTC is retrieved as both a current and history DTC, replace the module.