System Operation
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The vehicle horns are activated under the following conditions:
- The horn switch is depressed.
- The body control module (BCM) commands the horns on. The BCM commands the horns on under either of the following conditions:
- When the content theft deterrent system detects a vehicle intrusion. For further information, refer to THEFT SYSTEMS DESCRIPTION & OPERATION .
- When the panic button is depressed on the remote control door lock transmitter. For further information, refer to KEYLESS ENTRY SYSTEM DESCRIPTION & OPERATION .
- When the OnStar® system is used to sound the horns, if equipped. For further information, refer to ONSTAR® DESCRIPTION & OPERATION .
- When the keyless entry system is used to lock the vehicle, a horn chirp may sound to notify the driver that the vehicle has been locked. The notification feature may be enabled or disabled through personalization. For further information, refer to KEYLESS ENTRY SYSTEM DESCRIPTION & OPERATION .