Test Description
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.
The numbers below refer to the step numbers on the diagnostic procedure.
- 3 - Tests for the proper voltage at the affected module. If the voltage is not within the proper operating range, the charging system needs to be checked.
- 4 - Setup procedure for the module replacement.