GM Service Manual Online
For 1990-2009 cars only

The body control module (BCM) controls the audible warnings system. The audible warnings system sounds a chime located in the BCM, in order to bring attention to one of the following conditions:

    • The check gauges indicator is on.
    • The drivers seat belt is not fastened.
    • The key is in the ignition cylinder and the door is open.
    • The headlamps are on and the door is open.
    • The turn signal is on continuously for a distance of 1.2 km (0.75 mi.).
    • The park brake is engaged and the vehicle is moving faster than 5 km/h (3 mph) or the vehicle is in gear longer than 8 seconds with the park brake engaged.