2001 Pontiac Montana Owner's Manual - Page 150

Once armed, the alarm will go off if someone tries to enter the vehicle (without using the remote keyless entry transmitter or a key), breaks a window, tries to damage the vehicle or turns the ignition to ON. The horn will sound and the parking lamps will flash for up to two minutes. When the alarm is armed, the liftgate may be opened with the remote keyless entry transmitter or with a key. Arming with the Remote Keyless Entry Transmitter Your alarm system will arm when you use your remote keyless entry transmitter to lock the doors, if the key is not in the ignition. The security light will turn on to let you know the system is arming. After all doors and the liftgate are closed and locked, the security light will begin flashing at a very slow rate to let you know the system is armed. Arming with the Power Lock Switch Your alarm system will arm when you use either power door lock switch to lock the doors while any door or the liftgate is open and the key is removed from the ignition. If you would like to turn on power door lock switch arming, see "Multifunction Alarm Locks and Lighting Choices" in the Index. The security light flashes quickly to let you know when the system is ready to arm with the power door lock switches. The security light will stop flashing and stay on when you press the rear of the power door lock switch, to let you know the system is arming. After all doors and the liftgate are closed and locked, the security light will begin flashing at a very slow rate to let you know the system is armed. Arming with Your Key Your alarm system will arm when you use your key to lock the doors. The security light will turn on to let you know the system is arming. After all doors and the liftgate are closed and locked, the security light will begin flashing at a very slow rate to let you know the system is armed. If you would like your key not to arm the system, see "Multifunction Alarm Locks and Lighting Choices" in the Index. 2-38