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.

Verify that DTCs P1AE4, P0A80, P1ABE, or P1A0C are not set.

If any of the listed DTCs are set, repair them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
If any of the listed DTCs are not set, replace the drive motor generator battery control module.