GM Service Manual Online
For 1990-2009 cars only

The fasten safety belts indicator will illuminate when the following conditions occur simultaneously:

  1. The ignition switch is in 1 of the following positions:
  2. • RUN
    • BULB TEST
    • START
  3. The left hand (LH) front safety belt is not fastened.

The audio fasten safety belt warning alarm, located within the body control module (BCM), also incorporates an indicator within the instrument cluster. The fasten safety belt indicator works in conjunction with the fasten safety belt warning alarm. When the BCM receives a signal that the LH front safety belt is unfastened, the BCM sends a signal to the instrument cluster to ground the fasten safety belt indicator lamp ON.