Deactivating the Alarm
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
In the alarm mode, the following conditions are true:
- The horns sound intermittently.
- The headlights and the parklamps are flashing.
In order to deactivate a system in the alarm mode, perform one of the following procedures:
- Use the key in order to unlock one of the doors.
- Press the door unlock button on the key fob.
- If the vehicle control module (VCM)/powertrain control module (PCM) receives a valid Passlock® ignition key rotation.