Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 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 in the diagnostic table.

2) - Lack of communication may be due to partial or total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
4) - The symptom list in Symptoms will determine the correct diagnostic procedure to use.

Fig 1: Diagnostic System Check - Rear Wheel Steering (Steps 1-3)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnostic System Check - Rear Wheel Steering (Steps 4-7)

Courtesy of GENERAL MOTORS CORP.