Car Alarms: alarm on a 2003 Trailblazer, chevy trailblazer, valet mode

Question
I recently bought a 2003 Chevy Trailblazer. The car alarm will go off at the oddest times. ex.: 2:00 am; 4:00 am; while I'm sitting in my office, etc. Maybe twice in a day but usually just once. It makes three different siren sounds. I'm sure my neighbors don't appreciate this. Also, the SUV automatically locks itself within 60 seconds of me getting out of the drivers side. I called a Chevrolet dealer but they were really no help. Is this a problem that can be re-programmed and also a sensitivity issue? Can something be done about it?

Answer
It's likely to be an after market system.

To try to disarm it,
look under the dash area for a button or,
a toggle switch. When you locate it, turn on the
ignition key, press and hold in the button (little
spring loaded micro button, red or black possibly)
until the alarm chirps 1 time. This should over ride
the system, and only the keyless entry part,
if installed, would still be operating.
The LED (light emiting diode) light in the dash
should also go on solid.=VALET/OVERIDE

This stops the alarm except for the keyless
entry if installed. Once in Valet mode,
it will allow the car to start and operate
like there was no alarm at all.

The next step is to remove the alarm.
This might require a local technician to
identify it, and affect neccesary service for you.

That should solve the troubles.

Let me know what you discover.

ALARMTEK
CARALARMMAN.COM