Circuit/System Testing
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.
Program the TCM with the latest software version and retest for DTCs.
- If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.