Circuit/System Verification
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Perform the Diagnostic System Check Vehicle. Diagnose any other DTCs before attempting to diagnosis of C0561.
- With a Tech 2, view the Invalid Signal Data Display.
- If no invalid signal are present, view Signal Fault Data in the Enhanced DTC Data.
- Refer to appropriate module for diagnosing the invalid message data.
- Do not replace the EBCM due to this DTC fault.