Expert: INSTALLSUPPORT - 10/27/2008

Question
I have a 2001 chevy s10,the alarm wont allow it to start.the alarm only  comes on if the headlights come(right after sunset)and usually i can get around the problem by pushing a little black button thats located just below the parking brake.But in some cases in doesnt always work and when i bought the truck it didnt come with a key for the alarm....any suggestions on how to fix it?

Answer
:>( Bummer. But you are not alone.
I get this question all day long!

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

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

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.

It will work on yours as well.

Regards,

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