2003 Chevrolet Blazer Owner's Manual - Page 84

Theft-Deterrent Systems Vehicle theft is big business, especially in some cities. Although your vehicle has a number theft-deterrent of features, we know that nothing we put on it can make if impossible to steal. However, there are ways you can help. 3. Close all doors. The SECURITY light should go off after approximately 30 seconds. The alarm is not armed until the SECURITY light goes off. If a door is opened without the key or the remote keyless entry transmitter, the alarm will go off. Your vehicle's headlamps will flash and the horn will sound for 110 seconds, then will turn off to save the battery power. Remember, the theft-deterrent system won't activate if you lock the doors with a key or use the manual door lock. It activates only if you use a power door lock switch with the door open, or with the remote keyless entry transmitter. You should also remember that you can start your vehicle with the correct ignition key if the alarm has been set off. Here's how to avoid setting off the alarm by accident: Content Theft-Deterrent Your vehicle may be equipped with a Content Theft-Deterrent alarm system. With this system, the SECURITY light will flash as you open the door if your ignition is off. SECURITY If you don't want to activate the theft-deterrent system, the vehicle should be locked with the door key after the doors are closed. Always unlock a door with a key, or use the remote keyless entry transmitter. Unlocking a door any other way will set off the alarm. This light reminds you to activate the theft-deterrent system. Here's how to do it: 1. Open the door. 2. Lock the door with the power door lock switc:h or the remote keyless entry transmitter. The SECURITY light should come on and stay on. If you set off the alarm by accident, unlock any door with the key. You can also turn off the alarm by pressing UNLOCK on the remote keyless entry transmitter. The alarm won't stop if you try to unlock a door any other way. 2-17