Test Description
WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 GMC Sierra, 2002 Chevrolet Suburban, and 2002 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The number listed below refers to step number in the diagnostic procedure:
- 3
This step isolates the stoplamp switch as a source for setting the DTC.