Car Alarms: passkey, minute time frame, gm passlock

Question
QUESTION: I have a 98 blazer and tonight after we got home the alarm started sounding we would shut it off, but it has been going off every 20 minutes, my husband has now disconnected the batteryso our neighbors can sleep what could be the problem?Just bought the vehicle
ANSWER: Please tell me what you are experiencing.

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

Many veriables on this vehicle &
I Require a bit more imput please.

Is it: Headlights flashing, car horn honking
and a worded SECURITY" light in the dash flashing?
Or,
is it: flashing parking lights,
an LED in the dash area, and a siren
going off?

Let me know more on this to better
advise you on a course of action
to take, to help you to fix this
situation you're in quickly.


Best Regards,

Robert Martin
CEO/ALARMTEK
DELUXESERVICE.com

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

QUESTION: It's a passkey type alarm, factory installed, horn sounds lightsblink, siren sounds, dealer told to lock the doors manually and it would bypass it but it didn't work

Answer
Ok, here's what's happening.

The 10 minute time frame is the indicator that points
to a passlock problem.  10 minutes is the magic number
that says the passlock has been put into long tamper mode,
the vehicle thinks someone is trying to start the car with
the incorrect key.

If there is no aftermarket remote start in the vehicle,
then I would suggest taking it to the dealership for repair.  
If there is an aftermarket remote start, then whatever method
that was used to bypass the passlock is malfunctioning.

Now don't confuse this. The reaction you are having IS
due to the GM PASSLOCK II system being breached & activated
or, it is malfunctioning. In either case, this is
what (in this car) is troubling you. The trouble
though is that the local mechanic at
the gas station can't help here.

Sorry, but the passlock is GM's way
of getting you coming and going.

There is no outside method other then circumventing
it momentarilly to allow remote start, which won't
fix your troubles.

Nope, this is a GM issue and has to be corrected there,
or an outside shop will charge you bukoo bucks
to replace the whole VATS. (VERY PRICEY $$$$!)

Sorry wish I could be more help, but if it's
intermittent now, then it needs they're technician,
they're factory computer diagnostics to fix it.

There will be a fee involved to reset it, but much less
then replacing the entire VATS-Passlock system.

If you do find another fix, let us all know.
This is NOT uncommon. It is GM's way of keeping
it all inhouse, security wise.

Let us know what you find out.

Murph/ALARMTEK GM/VIPER TECH