1998 Chevrolet Venture Owner's Manual - Page 140

Content Theft-Deterrent (Option) If your vehicle has this option, it has a theft-deterrent alarm system. 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 on. The horn will sound and your vehicle's parking lamps will flash for up to two minutes. The system will also cut off the fuel supply, preventing the vehicle from being driven. When the alarm is armed, the liftgate may be opened with the remote keyless entry transmitter or with a key. Arming with the PowerLock Switch Your alarm system will arm when you use either power lock switch to lockthe doors while anydoor or the liftgate is open and the keyis removed from the ignition (if you would liketo turn off power lock switch arming, see "Locks and Lighting Choices" in the Index). A light located on top of your instrument panel (near the center of the vehicle, next to the windshield) will flash slowly tolet you know that the system has been armed. While armed, the doors will not unlock withthe power lock switch. The security light flashes quicklyto let you know when the systemis 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 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. 2-23