Circuit Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 GMC Yukon XL, 2000 GMC Yukon, 2000 GMC Sierra, 2000 Chevrolet Tahoe, and 2000 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) monitors key in ignition switch on Light Green wire to determine if key is in ignition switch. Signal provides an audible warning to driver indicating key is still in ignition switch. Signal provides exit lighting when key is removed. DTC sets when Light Green wire is open and ignition switch has been turned to RUN position. System voltage must be 9-16 volts. Conditions must be met for 0.5 second.