2007 Chevrolet TrailBlazer Owner's Manual - Page 86

Testing the Alarm The alarm can be tested by following these steps: 1. From inside the vehicle, lower the driver's window and open the driver's door. 2. Activate the system by locking the doors with the power door lock switch while the door is open, or with the remote keyless entry transmitter. 3. Get out of the vehicle, close the door and wait for the SECURITY light to go out. 4. Then reach in through the window, unlock the door with the manual door lock and open the door. This should set off the alarm. When the alarm is set the power door unlock switch is not operational. If the alarm does not sound when it should but the headlamps flash, check to see if the horn works. The horn fuse may be blown. To replace the fuse, see "Fuses and Circuit Breakers" in the Index. If the alarm does not sound or the headlamps do not flash, the vehicle should be serviced by your dealer. PasslockR Your vehicle is equipped with the Passlock theft-deterrent system. Passlock is a passive theft-deterrent system. Passlock enables fuel if the ignition lock cylinder is turned with a valid key. If a correct key is not used or the ignition lock cylinder is tampered with, the fuel system is disabled and the vehicle will not start. During normal operation, the SECURITY light will turn off approximately five seconds after the key is turned to RUN. If the engine stalls and the SECURITY light flashes, wait about 10 minutes until the light stops flashing before trying to restart the engine. Remember to release the key from START as soon as the engine starts. 2-17