Circuit/System Testing
WARNING: This page is about a different car, the 2010 GMC Terrain and 2010 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that no DTCs except P0856 00 are present in the ECM.
- If any DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Replace the K20 Engine Control Module (ECM) and verify the DTC does not reset.
- If the DTC resets, replace the K17 Electronic Brake Control Module (EBCM).