Removal Procedure

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.

Raise the vehicle.
Remove the spare tire from the vehicle to gain access to the control module.
Disconnect the electrical connectors from the control module.
Remove the bolts (1) retaining the control module (2) to the bracket.
Remove the control module from the vehicle.

Fig 1: Rear Wheel Steering Control Module
Courtesy of GENERAL MOTORS CORP.