Car Alarms: 2005 Chevy Cobalt alarm, chevy cobalt, alarmtek


Question
QUESTION: I have a 05 Cobalt and some how the alarm keeps coming on. I dont have the lock device on the key ring anymore. Every time I get in the car the alarm goes off. The only way to turn it off is to start the car. How do I turn the alarm off so I can get in and out with out it going off.

ANSWER: Ok, 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
WWW.CARALARMMAN.com

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

QUESTION: Im sure it is factory. The car was bought new and never had an alarm installed. No words flash just a picture of a car with a lock beside it in the dash. When you open the door it goes into short horn noises and then it starts blasting the horn after maybe 15-20 seconds. Dont see any buttons or anything under or around the dash like some of the older cars. Get in and start it and it turns the horn off but as soon as you shut it off and close the door the alarm activates with the icon flasing in the dash.

Answer
:>( Bad news I am afraid.
Somewhere along the way, the passlock system
was reset. Possibly when or, if the battery
was removed. This is a problem.

This vehicle has a the PASSLOCK II key
based engine disabling system.

You can attempt to put the key in the ignition,
turn it on to just before cranking and then leaving
it that way for 10 mins. After that,
some PASSLOCK systems will re learn the code
and allow for starting. But if not, the system
will either need to be seen by GM or, a bypass module
is required to circumvent.

If left unchecked though, it will continue to lock down
the fuel injector rail, and you will need to tow
it in to GM for evaluation, and resetting anyway.

Bothersome, but can be fixed.

I suggest the PLJX bypass kit to get around
this issue. www.PASSLOCK2.com

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.

The catch here is that the car engine
MUST start to program this module or it
won't work.

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.

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

Copy cut n paste the following payment link:

https://www.paypal.com/xclick/business=installsupport%40aol.com&item_name=1-GM+IB-IM-PLJX+PASSLOCK+BYPASS+MODULE&item_number=1-GM+IB-IM-PLJX+BYPASS&amount=69.95&no_note=1¤cy_code=USD

if you want to buy yours now,
or, go to the site link below to learn more
about your truck's system, and buy the
appropriate unit there.

Kind Regards,

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