there's really no reason to disable it. if the alarm fully activates it turns off on it's own after a few min anyway
"The Vehicle Security Alarm monitors the vehicle doors
and ignition for unauthorized operation. When the Vehicle
Security Alarm is activated, interior switches for
door locks are disabled. The system provides both audible
and visible signals for the first three minutes the
horn will sound and the headlights will turn on, the park
lamps and/or turn signals will flash and Vehicle Security
Light will flash repeatedly. For an additional 15 minutes
only, the headlights will turn on, the park lamps and/or
turn signals and Vehicle Security Light will flash."
