Diagnostic Aids

WARNING: This page is about a different car, the 2011 GMC Cab & Chassis Sierra, 2011 Chevrolet Suburban, and 2011 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

During diagnosis, park the vehicle on a level surface.
The vehicle should not pull in either direction while driving straight on a level surface.
Verify the steering wheel and steering wheel angle sensor is installed correctly.
Verify the steering shaft coupling to the steering gear is properly installed and aligned.
During high humidity conditions, condensation from the HVAC system may cause this DTC. If this DTC is reoccurring or set as a history code, inspect the steering angle sensor connector for water intrusion or corrosion.
Find out from the customer the conditions under which the DTC was set. This information will help to duplicate the failure.
The snapshot function on the scan tool can help find an intermittent DTC.
To correct a fretting condition disconnect the suspect connector and add Nyogel lubricant 760G (dielectric grease) to both sides of the connector terminals. Then reconnect the connector and wipe away any excess lubricant. This will correct the additional terminal contact resistance due to the terminal fretting corrosion.