This vehicle has a content theft-deterrent alarm system.

The security light is located on the instrument panel cluster.

To arm the system:

1. Close all the doors.
2. Lock the doors with the Remote Keyless Entry (RKE) transmitter. The security light flashes.

If the lock button on the RKE transmitter is pressed, but a door is open, the doors lock, the lights may flash and the horn may sound. Close the open door to arm the system.

The alarm goes off if a locked door is not opened using the RKE transmitter, or by OnStar®. A pre-alarm sounds the horn at reduced intensity for 10 seconds. Then, the front turn signal lamps flash for two minutes, and the horn sounds for two minutes. The alarm then turns off to save battery power.

Start the engine to turn off the alarm.

The theft-deterrent system does not activate if the doors are locked with the key, the manual door lock, or power door lock switch. The system can only be activated using the RKE transmitter, or by OnStar. See OnStar® System for additional information. The vehicle can be started with the correct key if the alarm has been set off.

To avoid setting off the alarm by accident:

Press unlock on the RKE transmitter, start the vehicle with the correct key, or have OnStar unlock the doors to turn the alarm off. The alarm does not stop if a door is unlocked any other way.

To test the alarm:

1. From inside the vehicle, lock the doors with the RKE transmitter.
2. Unlock the door with the manual door lock and open the door. The pre-alarm should sound followed by the full alarm about 10 seconds later.
3. Press the unlock button on the RKE transmitter or start the engine to turn the alarm off.

If the alarm does not sound but the lights flash, check to see if the horn works. The horn fuse could be blown. To replace the fuse, see Fuses and Circuit Breakers .

If the alarm does not sound or the front turn signal lamps do not flash, see your dealer/retailer for service.