Car Alarms: venture starting, gm passlock, passlock 2

Question
I have a 04 chevy venture and it  won't start. the passkey module is one part i would like to replace and also the theft computer,but i can,t find the computer in the van is it considered the bcm?

Answer
This vehicle has the GM Passlock III immobilzer
anti-theft system. A bypass is required to circumvent.

I suggest the GMBP - GM Passkey 3
& Passlock 2 Data Override 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 GMBP 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 III would then always be bypassed as long
as that wire is chassis grounded.

I can not speak about a damaged passlock system,
or even removal, as this is not my specialty,
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.

Oh, the BCM is the body control module, and
that info can be found in a place like
www.CHILTONSONLINE.com .

Kind Regards,

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

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