Additional Warnings

Many other vehicle systems activate audible warnings to signal to alert the driver that the system is currently operating or has been deactivated. The audio amplifier activates the audible warning as requested via serial data for systems including:

• Onstar
• Turn Signals
• Park Assist
• Door Locks
• Tire Pressure Warning System

The following warnings have an associated instrument panel cluster (IPC) indicator:

• Hot coolant temperature-The audio amplifier activates the audible warning as requested by the body control module (BCM) or the ECM. The IPC sends a serial data message to the audio amplifier indicating the chime frequency and duration.
• Low fuel-The audio amplifier activates the audible warning as requested by the IPC. The IPC sends a serial data message to the audio amplifier indicating the chime frequency and duration.
• Low engine oil pressure-The audio amplifier activates the audible warning as requested by the IPC. The IPC sends a serial data message to the audio amplifier indicating the chime frequency and duration. The low engine oil pressure indicator will be ON in the IPC.

Refer to Indicator/Warning Message Description and Operation .