Circuit/System Testing
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X1 harness connector at the BCM.
- Verify there are not any aftermarket components wired into terminal 5.
- If terminal 5 is empty, clear the code as there are not any further circuits to diagnose.