Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, open and close the driver and passenger doors. Check to see if the courtesy lamps are operating properly.
- If the courtesy lamps are not operating properly, refer to Courtesy Lamps Always On and Courtesy Lamps Inoperative .
- If the courtesy lamps are operating properly, replace the IPC.