GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have a theft-deterrent system.

The theft-deterrent system will not arm when you lock the doors using the key or the manual door lock. It activates only when you use the optional remote keyless entry transmitter.

Arming the System

To arm the system:

  1. Turn the ignition to LOCK/OFF and remove the key from the ignition.
  2. If the key is inserted in the ignition, the transmitter will not operate the theft-deterrent system.

  3. Close the doors, the windows, the hood, and the liftgate.
  4. Make sure the windows are closed, as the system can be activated even if the windows are open.

  5. Lock the door using the remote keyless entry transmitter. The transmitter must be used to activate the theft-deterrent system.
  6. • The LED light on the transmitter will flash once.
    • All of the doors will lock.
    • The hazard warning lamps will flash once and the horn will sound.
    • The theft-deterrent mode will activate.
    • The security light will flash once every second to indicate that the theft-deterrent system is armed. The security light is located on the base of the driver's door lock.

To avoid activating the alarm by accident, use one of the following methods:

    • Unlock the driver's or passenger's door using the key.
    • Press the unlock button on the remote keyless entry transmitter.

Unlocking a door any other way will activate the alarm when a door or the liftgate is opened.

If you do not want to arm the theft-deterrent system, lock the vehicle using the key or the manual door locks.

Disarming the System

To disarm the system, use one of the following methods:

    • Unlock the driver's or passenger's door using the key.
    • Press the unlock button on the transmitter.
       - The LED light on the transmitter will flash once.
       - All of the doors will unlock.
       - The hazard warning lamps will flash twice.
       - The theft-deterrent mode will deactivate.

If the door is not opened or if the engine is not started within 30 seconds after disarming the system with the transmitter, all of the doors will automatically lock and the theft-deterrent mode will reactivate.

How the System Alarm is Activated

If a door or the liftgate is opened without using the key or the remote keyless entry transmitter, the horn will sound and the lamps will flash for up to 30 seconds.

How to Turn Off the System Alarm

If the system alarm is active, it can be deactivated using one of the following methods:

    • Press the lock or unlock button on the remote keyless entry transmitter.
    • Unlock the driver's or passenger's front door using the key.

Otherwise, the alarm will automatically stop after 30 seconds. The system will then lock the doors and reactivate the theft-deterrent system.

How to Detect a Tamper Condition

If the hazard warning lamps flash once when you press the lock or unlock buttons on the remote keyless entry transmitter, that means the theft-deterrent system alarm was triggered while you were away, from the vehicle.

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