Circuit/System Verification
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 ON, perform the IPC display test using a scan tool. Verify the indicator illuminates and turns OFF.
- If the indicator does not operate as expected during this test, replace the IPC.
- If the indicator functions normally during this test, replace the ECM/PCM.