Car Alarms: car alarm & battery, chevy blazer, passlock bypass

Question
QUESTION: i have a 99 chevy blazer, a couple months back i bought a new battery which restarted my dead car alarm. now my car is dead cause the alarm killed the battery from continuously going off while i was on vacation. now im afraid to jumpstart car because i dont want the alarm to go off, what are the chances it would go off?

ANSWER: Please be more descriptive. What is "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: i was not around when the alarm was going off. but the word security does come on whenever i put my key in the alarm. i tried to jump start a couple of days ago but the word security kept flashing and the car wouldnt start.
the battery is dead. im just afraid when i jump the battery, the "alarm" will go off.

Answer
Unfortunately, this
vehicle has a the PASSLOCK II key
based engine disabling system, and currently it
is engaged. The ignition does not recognize
the chip in your key any longer.

A bypass is required to circumvent.
If left unchecked, it will lock down the fuel injector
rail (as it has now), and you will need to
tow it in to GM for evaluation, and resetting.

But, if you want to just remove this system
from the equation entirelly,
I suggest the PLJX bypass kit to get around
this issue.

This Passlock Bypass Module is designed to momentarilly
allow the engine to remote start by sending a proper
coded pulse to open the fuel rail passlock injector
cut off circuit.

The output from an alarm/remote starter
would then shut down the pulse, once it has detected
the engine has engaged, and preserve the integrity
of the passlock system.

That is it's designed purpose.

However, in your case, this input wire on the PLJX module,
instead of going to a momentary ground pulse from
an alarm/remote starter,
would go to a constant chassis ground, through
the bypass module, grounding out the PASSLOCK.
The PASSLOCK would then always be bypassed as long
as that wire is chassis grounded.

I can not speak about a damaged passlock system,
like if a thief has destroyed it, because I do not
get into this part of GM'S security application.
But as a happy coincidence to installing
after market remote starters, this does work on bypassing
passlock in most all GM vehicles we've run into,
including your year GM vehicle as well.

Also, this is a self learning, resistor sensing
and adjusting module. Once the VATS wires have been tapped,
you would press the program button to learn,
and it does. The car should then allow start
with any hardware store key.

Hopefully, it will on yours as well.

You might want a car alarm installer to do this
for you, the fair rate being around 50. to 75.
for labor.

Regards,

Robert Martin-ALARMTEK/CEO
Master Technician
Mobile Security Electronics
www.PASSLOCK2.com