Circuit/System Testing
WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the left back up lamp.
- Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal listed below and B+:
- RPO WDA - terminal 1
- RPO Z88 - terminal 2
- RPO W49 - terminal A
- If the test lamp illuminates, test the control circuit for a short to ground.
- If all circuits test normal, replace the BCM.