System Operation
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- The vehicle horns are activated whenever the horn switch is depressed.
- The BCM commands the horns ON under any of the following conditions:
- When the panic button is depressed on the remote control door lock transmitter. For further information refer to Keyless Entry System Description and Operation (without Accessory 2 Way Remote) or Keyless Entry System Description and Operation (with Accessory 2 Way Remote) .
- 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 and Operation (without Accessory 2 Way Remote) or Keyless Entry System Description and Operation (with Accessory 2 Way Remote) .
- When the OnStar® system is used to sound the horns if equipped. For further information, refer to OnStar Description and Operation .