Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. 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.

Step 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.
Step 4 - Setup procedure for the module replacement.