2003 Chevrolet Cavalier Owner's Manual - Page 85

Theft-Deterrent Systems Vehicle theft is big business, especially in some cities. Although your vehicle has a number of theft-deterrent features, we know that nothing we put on it can make it impossible to steal. However, there are ways you can help. Disarming the System If the system is armed, pressing the UNLOCK button on the transmitter will disarm the system. The THEFT SYSTEM light will stop flashing. If the system is armed, turning the key to START will also disarm the system. If the system is armed and the trunk is opened using the trunk release button on the transmitter, the system will temporarily disarm itself and re-arm when the trunk has been closed. This allows the customer to exit the vehicle, lock the doors using the transmitter, and open the trunk using the transmitter without having to disarm and subsequently re-arm the system. Content Theft-Deterrent Arming the System With the ignition off, pressing the remote keyless entry transmitter LOCK button will arm the system immediately after all doors and the trunk are closed. If the transmitter LOCK button is pressed again within five seconds, the horn will chirp to confirm that the system has been armed. Once the system is armed, the THEFT SYSTEM light on your instrument panel will flash and remain flashing. This confirms the system is armed and monitoring the doors and trunk. If the light is on solid, the system is not properly activated due to either a door or the trunk being ajar. If you don't want to arm the system, lock the car with the lock levers on the doors or with the power door lock switch. 2-16 How the System Alarm is Activated If the system is armed, opening any door or trunk, or using a wrong key to start the vehicle will cause a pre-alarm chirp for 10 seconds and then a full alarm of horn and headlights for two minutes. If an alarm event has finished and all doors and trunk are closed, the content theft security system will re-arm itself.