Action Taken When the DTC Sets

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The Service 4 Wheel Steer indicator in IPC will be displayed.
The code is displayed on the scan tool as DTC C0527.
The output command to the motor is zeroed and the motor drive circuits are disabled using commands from the rear wheel steering control module to open the motor shorting relay.
The rear wheels will be returned to the centered position.