GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Audible Warnings Operation

Fasten Belts Indicator

If the driver's seat belt is unbuckled, the left front seat belt switch closes and grounds CKT 238 (BLK/WHT). CKT 238 (BLK/WHT) applies a ground signal input to the body control module (SBM) at connector C1 terminal C3. When the ignition is turned to the START position, or the RUN position, the SBM turns on the fasten seat belt warning chime for 4-8 seconds. The module, at the same time, applies a control signal to CKT 234 (YEL) and lights the FASTEN BELTS indicator for 4-8 seconds. Once the chime stops, the indicator flashes if the seat belt is unbuckled. If the driver's seat belt is buckled during the 4-8 second warning period, the chime stops and the indicator turns off.

Chime Conditions

Audible warnings brings one or more of the following conditions to the driver's attention:

    • The seat belt is unbuckled and the ignition switches in the RUN position or the START position.
    • The key is in the ignition switch, the ignition switch is set to the following positions, and the left front door is open:
      • LOCK
      • OFF
      • ACC
    • The headlights or the park lights are on, the ignition switch is set to the following positions, and the left front door is open:
      • LOCK
      • OFF
      • ACC
    • Various warning conditions which notify the driver that a condition has occurred.
        Some warning chimes may command the instrument cluster to illuminate an associated indicator or display a driver information center (DIC) message.

Chime Priorities

When multiple chimes are required, only the chime with the highest priority sounds. The chimes are prioritized in the following manner:

    • The fasten seat belts warning chime overrides all other audible chimes if the chimes exist simultaneously.
    • The key in ignition warning chime overrides the lamps on warning chime if both chimes exist simultaneously.

Chime Rates

The chime operates in the following manner:

    • The fasten belts warning chime rate is 50 pulses per minute.
    • The lamps on warning chime rate is 150 pulses per minute.
    • The key in ignition warning chime rate is 200 pulses per minute.