97 Pontiac grand am security system won't let car start

SOURCE: 2004 pontiac grand am will not start.

ignition switch or worn key or the body control module is going out.

SOURCE: 2004 pontiac grand am car will not start

the security light will flash and disable the fuel injectors preventing the car from starting, if it thinks that it is being stolen. its easy to fix. set the parking brake to turn off the automatic headlights. next turn the key to the on position and wait ten minutes. the security light should stop flashing. then turn the key off and this will reset the security system. it should start immediatly afterwards.

SOURCE: 2004 pontiac Grand Am with security passlock starting problems

Unfortunately you are correct, this
vehicle has the PASSLOCK II key
based engine disabling system, and currently it
is engaged. The sensor does not recognize &
retain the passlock reader chip in your ignition
switch any longer.

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.
Eventuall, the 10 minute over ride will cease to
work and you will finally be forced to visit
a Pontiac/GM dealer.

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.
Coincidence to installing
after market remote starters, this does work on bypassing
passlock in most all GM vehicles,
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.

Shannon L Washam

• 169 Answers
• Posted on Sep 25, 2009

SOURCE: my car starts but after a while dies waht can be

Hello! You're symptoms sound very much like a common problem associated with the fuel pump resistor. The GTP engine has a two speed fuel pump. There are two relays that control the fuel pump via the PCM module. The fuel pump relay and fuel pump hi-speed relay. Tied into the hi-speed relay is a fuel pump resistor that may go bad.

Symptoms vary but primarily the engine will start but die in a matter of seconds due to insufficient fuel pressure.

Here is a picture of the relay - which is located in the fuse box in the engine compartment:


What you can do to both diagnose this and either narrow it down to this or disqualify it as the culprit is remove relay #15, and bend out the tab labeled "85", and then reinstall the relay. If this does solve your problem, then you need to replace the Fuel Pump Resistor. Doing this will bypass the resistor, and place the fuel pump in "high" speed mode at all times. Once you have replaced the resistor, you need to bend the tab back to its normal position and replace the relay.
NOTE: while this may be a helpful diagnosis tool, and provide a temporary fix - doing this procedure for a prolonged period of time can lead to fuel pump failure. Use this at your own risk.


Hope this helps and good luck!

SOURCE: Pontiac Grand Prix 94, will not start. Security lighty

try a new ignition switch.