My 2002 Grand am is have a passlock problem. The

Is there a security lamp on the dash that is on or flashing? Any applicable trouble codes? My info shows you have passlock, usually a fuel injector disable, only, may start and stall. If vehicle starts and stalls, leave key in the on position, If security lamp does not flash, the passlock system should not be at fault.

Need to turn off passlock - Chevrolet - iFixit

https://www.ifixit.com/Answers/View/.../Need+to+turn+off+passloc...

iFixitThose of you that have stalling problems, it is not passlock. ... traction fault on the display when it shuts down or won't start and have to wait my 10 min to restart.

GM Passlock Security Light Issues - RepairPal

repairpal.com/gm-passlock-security-light-issues

If you find yourself stranded, your engine won't start, and the security light is flashing, ... The most common repair is to replace the ignition lock cylinder or Passlock ... The warning light on the VATS system is similar except it does not have the ...

No Start Due to Failed Passlock Sensor : Pontiac Grand Am ...

repairpal.com > Problems > Pontiac > Grand Am

Why do think the key security is bad? If you still have a factory key, this is not the problem...if no factory key, you can take your VIN number or original key to GM dealer to get new key that they will program for you...Check for dirty battery connections:)

Depending on the year of vehicle how the security system works (you didn`t specify year or model). Older models up to 1997 use passlock I, they have a chip in the shaft of the key, and usually break in the steering column just behind the ignition key cylinder. You will need to know the code number of the key, and will have to order a new ignition cylinder and new keys. After 1997 its passlock II which has the chip inside the head of the key. It learns the code of the key and ensures its the correct key every time you start the car. The most likely problem with this system is the passlock sensor in the ignition switch. Try turning key to run (do not crank) leave key on for 10 minutes, the security light should be flashing. When it stops flashing or goes solid (after 10 min relearn) try to start again. If starts you will need the passlock sensor soon. It probably has a trouble code set in the BCM (body control computer).

Define "won't start". Won't crank? Cranks but won't fire up? Fires up then dies?

you can bypass the security system entirely. There is a great write-up here http://newrockies.ca. That was the only way to save my Park Avenue.

You need to replace the passlock module. It is located behind the ignition switch.

if your security light is on it won't start. Leave the key for tens minutes or so until the security light flashes then it should start.

I have a 2002 Grand Am also. I had this same problem twice. The first time it happened, the battery was still working but was not strong enough to crank the car or make any noise under the hood at all. All electrical stuff worked though (lights, radio, etc). So i bought a new battery and everything was back to normal.

The 2nd time this happened, the passlock system was shot (the passlock system is a type of security device the car has installed in it.) When i inserted the key, everything worked, but nothing coming from the engine. I had to take the car to a dealership and get it replaced for around $400. If you look online you can find other ways to avoid the dealership and fix it yourself, but that could result in making something else not work as well.

Hope this helps in some way.

-Cody

It is your locks. I would just disconnect them and lock the car manually. Its a common problem on most GM cars cause water got in an rusted the auto lock motor cause them to send the wrong signal to the computer.