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 table.

5. This step simulates pressing and releasing a properly functioning traction control switch.
6. The traction control switch may be damaged if the traction control switch signal circuit is shorted to voltage.
7. This step tests if the ignition 1 voltage circuit can supply adequate power to the traction control switch.
8. This step tests if the EBCM is commanding the traction off indicator OFF.

Fig 1: Traction Off Indicator Inoperative (Steps 1-5)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Traction Off Indicator Inoperative (Steps 6-15)

Courtesy of GENERAL MOTORS CORP.