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 table.

3. This step verifies the ignition 1 voltage circuit can supply adequate power to the traction control switch.
4. This step verifies the EBCM is applying ground to the low traction indicator.
5. The EBCM may be damaged if the traction control active signal circuit is shorted to voltage.

Fig 1: Low Traction Indicator Inoperative Diagnostic Test

Courtesy of GENERAL MOTORS CORP.