GM Service Manual Online
For 1990-2009 cars only

Your vehicle has a theft-deterrent alarm system.


Object Number: 822610  Size: A1

The security light is located on the instrument panel cluster.

If the ignition is off and a door is open, the security light will flash, reminding you to arm the theft-deterrent system.

To arm the system:

    • Press the lock button on the keyless access transmitter. If the door is closed when the lock button is pressed, the security light will stay illuminated for 30 seconds. After the security light goes off, the theft-deterrent system is armed. Pressing the lock button twice will arm the system immediately.
        If the vehicle is locked using the keyless access transmitter and the trunk lid, hood or a door is open or not closed completely, the security light will flash for 60 seconds and then turn off. The theft-deterrent system is armed but the alarm will not sound if the trunk lid, hood or door that was not closed completely is tampered with or opened. The alarm will sound for the trunk lid, hood or a door that was completely closed at the time the vehicle was locked using the keyless access transmitter.
    • Exit the vehicle and lock the door with the power door lock switch or lock button on the keyless access transmitter. The security light should flash. Close the door. The security light will stop flashing and stay on. After 30 seconds the light should turn off, the theft-deterrent system is armed.
    • If Passive Arming is activated through the vehicle personalization feature, the system will arm automatically after you close the door and take at least one keyless access transmitter with you. The security light will turn on. After 60 seconds the light should turn off. The theft-deterrent system is armed. See Vehicle Personalization .

If a door, hood, or the trunk is opened without the keyless access transmitter, the horn will sound for 30 seconds and the lamps will flash for two minutes. The vehicle cannot be started without a keyless access transmitter.

The Theft-Deterrent system will not arm if :

    • The key is used to turn the key cylinder to the lock position.
    • The driver's door is locked using the power door lock switch after the doors are closed.

The vehicle can be programmed to automatically unlock the doors and disarm the theft-deterrent system when you approach the vehicle and the keyless access transmitter is with you. See Vehicle Personalization .

Pressing the unlock button on the keyless access transmitter or using the key to unlock the driver's door disarms the theft-deterrent system. Unlocking a door any other way while the system is armed will activate the alarm.

Testing the Alarm

  1. From inside the vehicle, roll down the window, then get out of the vehicle, keeping the door open.
  2. From outside of the vehicle, with the door open, lock the vehicle using the power door lock switch or the keyless access transmitter and close the door. Wait about 30 seconds until the security light goes off.
  3. Reach in and open the door using the inside door handle. The horn will sound and the exterior lamps will flash.

You can turn off the alarm by pressing the unlock button on the keyless access transmitter or by starting the car.

If the alarm does not sound when it should, check to see if the horn works. The horn fuse may be blown. To replace the fuse, see Fuses and Circuit Breakers . If the fuse does not need to be replaced, you may need to have your vehicle serviced.

To reduce the possibility of theft, always arm the Theft-Deterrent system when leaving your vehicle.

Do not leave the key or device that disarms or deactivates the theft deterrent system in the vehicle.