QuestionHI there i started our 99 gms yukon with a spare key that does not have that little black square... i had done it before with no problem... 4 days ago i did again it actually started for about 2 seconds and then turned off. everything inside goes on radio, lights everything except actual engine... no security light flashes or anything... can you help me please? I do not have money to take it to the dealer or anything like that.... thank you very much.
AnswerUnfortunately you then have a big problem,
because this vehicle has a the PASSLOCK II key
based engine disabling system, and currently it
is engaged. Even if you have the black keys,
they too would have stopped working.
No free fixes here I am afraid ma'am.
A bypass is required to circumvent.
If left unchecked, it will lock down the fuel injector
rail (as it has now), and you will need to
tow it in to GM for evaluation, and resetting.
But, if you want to just remove this system
from the equation entirelly,
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.
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.
Regards,
Robert Martin-ALARMTEK/CEO
Master Technician
Mobile Security Electronics
www.PASSLOCK2.com
