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.

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 (Steps 1-3)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Low Traction Indicator Inoperative (Steps 4-11)

Courtesy of GENERAL MOTORS CORP.