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.
Presence of current or history DTC's while attempting to rezero PPS will cause PPS module to set DTC B063. Verify all SIR and PPS DTC's have been cleared before rezeroing PPS.
NOTE:
For circuit number and wire color identification, see WIRING DIAGRAMS .