GM Service Manual Online
For 1990-2009 cars only

Chime Conditions

Audible Warnings bring to the driver's attention to one or more of several conditions:

    • Seat belt is unbuckled and ignition switch is in ON or START.
    • Key is in ignition switch, ignition switch is set to OFF or ACC, and LH front door is open.
    • Headlamps or parklamps are on, ignition switch is set to OFF or ACC and LH front door is open.
    • Vehicle has travelled one mile with the LH or RH turn signal on.
    • Various warning conditions which notify the driver that a fault has occurred. Such warning chimes have an associated indicator on or 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 as follows:

    • The Fasten Seat Belts Warning chime overrides all other audible chimes if they exist simultaneously.
    • The Key In Ignition Warning chime overrides the Lamps On Warning chime if both exist simultaneously.

Chime Rates

The rates of chime operation are as follows:

    • Fasten Belts Warning chime rate is 50 pulses per minute.
    • Lamps On Warning chime rate is 150 pulses per minute.
    • Key In Ignition Warning chime rate is 200 pulses per minute.