Seat Belt System Circuit Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The seat belt indicator will illuminate when the following conditions occur simultaneously:

The ignition switch is in one of the following positions:
- RUN
- BULB TEST
- START
The LF seat belt is not fastened.

The audio alarm, located within the body control module (BCM), also incorporates an indicator within the instrument panel cluster (IPC). The seat belt indicator works in conjunction with the audio alarm. When the BCM receives a signal that the LF seat belt is unfastened, the BCM sends a signal to the IPC to command ON the seat belt indicator.