Circuit/System Verification
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that DTC C0456 4B is not set.
- If the DTC is set, calibrate the steering position sensor. Refer to Power Steering Control Module Calibration . If the DTC resets, replace the steering gear.
- Replace the K43 Power Steering Control Module.