Expert: ALARMTEK - 3/18/2011

Question
QUESTION: how do you adjust the alarm sensitivity on a 2004 trail blazer. my alarm goes off for no reason

ANSWER: I need to determine whether it's a factory alarm
issue or, if it's an aftermarket system you are
dealing with.

Ok let's clear up the terminology glitch here.

1. FACTORY/OEM alarm = Part of the original schematics
and plans from the manufacturer.
(horn honk, head lights flash, Starter may crank and
die, no spark)

2. DEALER INSTALLED alarm = Just that. Once the vehicle
is brought to a dealer, the dealer sub contracts the after market
security out.
(horn might honk, siren and parking lights flash, starter kill relya,
no start, no crank, just dead.)

3. AFTER MARKET alarm: Same as #2 but Customer IS AWARE that
the system was put in at the dealership, but may not
be informed of the brand name, or even what it's
total capabilities are.
(siren & parking lights flash, starter kill)

Which one applies to yours?

RM/ALARMTEK
CARALARMMAN.COM

---------- FOLLOW-UP ----------

QUESTION: it is #1 factory alarm. And the truck will start.

Answer
There is no way to adjust a factory alarm.
What you need to do is inspect any drain on the battery
or broken door lock assembly.

This is how a GM "factory" alarm triggers.
Perceptible batter drain. There is no shock sensor
or anything else that could set it off.

I'd look at the entry points, dome lights left on etc. or
replace the battery if it is suspect or is old.

A.