Circuit/System Description
WARNING: This page is about a different car, the 2008 Saturn Outlook, 2008 GMC Acadia, and 2008 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Battery voltage is applied at all times to the body control module (BCM) from the INT LAMPS Fuse located in the rear fuse block. The BCM then applies this voltage to the following lamps:
- I/P compartment lamp
- Courtesy/reading lamps
- Cargo lamp
- Vanity mirror lamps
In the event that any of these lamps were to remain illuminated for more the 20 minutes with the ignition switch in the OFF position, the BCM will deactivate the inadvertent power courtesy lamps circuit to prevent total battery discharge.