Expert: INSTALLSUPPORT - 10/13/2007

Question
I recently have a customer in our shop with a vats theift problem have code 46 diag leads to vats module failure but it is not available any more vehicle will crank but no injector pulse the module sends a signal to the ecm on circuit 229 think it should be 2.5 volts to let the ecm turn on the injectors I am trying to find out where I can get something to tie into that line or delete the vats system for the customer so vehicle will run then send him to get an aftermarket alarm system installed

Answer
I suggest the PLJX bypass kit to get around
this issue.

This Passlock/VATS 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 VATS 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 VATS.
The VATS 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.

Kind Regards,

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

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