Circuit/System Verification
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
Verify that there are no DTCs set in the ECM.
- If there are any DTCs set in the ECM, refer to Diagnostic Trouble Code (DTC) List - Vehicle .