Car Alarms: 2001 Trailblazer, alarmtek, power spike

Question
QUESTION: I have a factory installed alarm system.  It will go off in the midddle of the night for no reason.  I have taken the batteries out of the remotes.  I need some help, please advise.  thank you

ANSWER: Please be more descriptive if possible.

"GOING OFF?"

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

Is it: Headlights flashing, car horn honking
and a worded SECURITY" light in the dash flashing?
(doubtfull since none of the notes show this
car as having a factory alarm system)=FACTORY

Or,

is it: flashing parking lights,
an LED in the dash area, and a siren
going off?= AFTER MARKET

Let me know more on this to better
advise you on a course of action
to take.

Best Regards,

Robert Martin
CEO/ALARMTEK
CARALARMMAN.com

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

QUESTION: It is headlights flashing, horn honking and word security.
thanks

Answer
It appears your system is reading a power spike. This can be from a faulty
alternator, computer etc...

I would have GM run a preventive maint. check on the PASSLOCK
system and determine if the power issuses are causing the
alarm to trigger in the middle of the night.

Hard to say from my vantage point. Best to get some
eyes in there before this situation escalates.

Good luck.

ALARMTEK