QuestionIm thinking my car wont run due to what im reading about the passlock. Car is a race car. I had to replace pcm after a wreck smashing the front fender. After replacing the PCM the car starts up right away just fine but only runs for maybe 5sec. If I hold the key in the start position ( not good idea but I did it) the car continues to run. Im thinking the problem is the passlock issue. how can I bypass this capibliity. Again its not the origional PCM its a new one programmed for the vin number of the car. I tried the 30min startup procedure for the pcm to relearn but that does not work. Again it will only run if the key is left in the start possition but once releasing it to go to the run position the car quits. I think its shutting off the fuel to the injectors but not real sure of that being it happnes so quickley. When first going to the run mode the injectors do inject fuel enitialy for just a shot to start but after that no fuel. So it only runs just enough to burn up the fuel that was first injected.
AnswerThis vehicle has the GM Passlock I immobilzer
anti-theft system. A bypass is
required to circumvent.
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 I 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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