Last post on Dec 06, 2013 at 3:06 PM
You are in the Pontiac Grand Am
What is this discussion about?
Pontiac Grand Am, Security System, Sedan
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
For those experiencing the security passlock problem, please see long-time member lovemygrandam's GM Security Passlock Fix tutorial.
#774 of 1286 Re: 2005 Pontiac Grand Am SE [towguy609]
Jan 17, 2010 (2:38 pm)
I'm going to speculate on what your problem is. Your symptoms seem to indicate that there is a mismatch between the resistance in your remote start bypass, and the resistance in the original ignition switch passlock system. This may be caused by either the installers of the remote starter choosing the wrong resistance value for the bypass, or after they installed it, the resistance of the original passlock system changed, or it could be constantly changing, which would be what causes your system to intermittently malfunction.
If I were in your shoes, I would do the resistor mod on your vehicle, which would, in effect take care of both your problems, but... I would definitely install the resistor on the wires near the Body Control Module, as was described on my website. www.bergerweb.net Even so, you will have to get a service manual so that you can find out which two wires to use to solder in the resistor, as they may be on different pins on different model cars. The cheapest service manual is the online subscription service called
where you can subscribe to online service manuals for each of your cars at only $27.00 per year. They give an example of what kind of information is available, and one of their examples is a Chevy Tahoe 1998 truck. Here is the schematic of the security system portion of that vehicle, and as you can see, everything about the passlock module of that vehicle is shown on one wiring diagram...
1998 Chevy Truck C Tahoe 2WD
Looking closely at the above diagram, you can see that on that vehicle, to do the resistor bypass, you would have to find the EVO/Passlock module, cut the yellow wire going into it, and solder a resistor between pin b5 and b7 of that module. Doing this would render the Security system inoperative, thereby getting rid of the no-start problem, which is in your case a good thing, since your security system is more of a problem than a desirable feature.
Good luck, and I hope you find the service manual to your liking. I subscribed to it for one year when I first had my Passlock Problem, and was very satisfied. While I had the subscription, I made paper copies of pages that I thought would be useful in the future.
#775 of 1286 Re: Disable your Passlock! [raycorri]
Jan 18, 2010 (10:43 am)
My 2004 Grand Am was . I was . Then I was . I installed the toggle switch on the yellow wire and, it works like a charm. The security light turns on and off with the flip of the switch. I can't thank you enough for letting us know about this solution. Anyone who has contacted GM knows that they are utterly and completely useless. I can't believe I almost paid that piece of crap company more money. Oh, by the way I'm in for the class action if anyone gets one going, for this problem or the amazing shrinking dash. Thanks again.
#776 of 1286 Re: Disable your Passlock! [stngrnd]
Jan 18, 2010 (3:07 pm)
It's gonna be pretty hard to collect any lawsuit judgement from a company that don't exist anymore.
#777 of 1286 Passlock?
Jan 29, 2010 (3:44 am)
I just changed my heater blower, and also replaced the EGR valve on my 2001 Grand Am GT. When I tried to start my car it started, then shut off right away, and repeated and it won't stay on. I also noticed my radio, dome lights, and locks where all not working, but my headlights, windows are. Any idea what could have caused this? I tried doing the pass lock trick but still nothing!
#778 of 1286 Re: Passlock? [brob01]
Jan 29, 2010 (6:32 am)
If there's no security light flashing then it's probably not passlock. Some of your symptoms sound like ignition switch, some sound like fuel delivery.
#779 of 1286 PASSLOCK PASSLOCK PASSLOCK
Feb 01, 2010 (12:45 pm)
My BABY my 2003 PONTIAC GRAND AM which I am absolutely in love with and have had since the day it came off the line has had passlock problems for 4 years now. It is the ONLY problem I have had with it since it's 'birth'. The first time it happened I thought it was a battery problem so I changed the battery...nope didnt work. Then while sitting in her I started reading the book and found the passlock and tried it. Worked like a charm of course. Well didn't have any more problems til last fall. Did the same thing. I knew how to deal with it that time. Lately the security light has been coming on and staying on while driving. If i would stop and turn the car off the light would go off. Then last week the light came on and didnt go off no matter what i did. Well today it locked up on me twice. Then after coming home after the second lock up I turned the car off, started it up turned it off and it started right up...did this four times with no trouble and the light is not on at all. HELP ME SOMEONE!!!! I AM IRRITATED!!!! MY BABY NEEDS MINOR SURGERY. I have had the key changed. My dealer wants major bucks for an ignition switch I know she doesnt need. I may be female but I am not stupid!!!! The car does not have a keyless remote. So will the PLJX bypass kit work or should I....cut the yellow wire? I would appreciate some help.
#780 of 1286 I CUT THAT WIRE!
Feb 01, 2010 (1:48 pm)
It was very simple to do and solved my problem immediately. I don't mind driving with the red "theft sys" light staying on...beats wearing out starters and batteries and spending any more money...follow the directions carefully and you'll be fine! ">
#781 of 1286 Re: PASSLOCK PASSLOCK PASSLOCK [hwyjnke812]
Feb 01, 2010 (2:04 pm)
Of course he wants major bucks for the operation (he'd never show you the $10 fix). Ask yourself this: What are the chances (given what else is available to thieves) of anyone stealing a 2003 Grand Am in your area? Mine is a '97, and I live in a town full of millionaires driving Caddies and Mercedes Benzes (answer: 0). Since this is the one junk system in the entire car, I resolved a long time ago to scrap the damn thing. Find my previous posts re cutting the wire and installing the switch. It costs you $3 and half an hour of your time, and since I did it, I've never had a starting problem. Yes, I have to drive around with the red light on -- BIG DEAL! The car still gets 35 mpg, better than most new ones.
#782 of 1286 I agree nobullchitbids
Feb 02, 2010 (6:20 am)
I cut my wire and installed the toggle a year ago . Not one problem since .
(2002 Grand Am) My light stays on too but not visible when covered with a piece of black electrical tape .: )
#783 of 1286 Re: Yet agian [philbert1998]
Feb 02, 2010 (2:12 pm)
I had the identical problem with my 01 grand am. The security-no start problem was occurring more and more often. I never knew when my car would not start.
I had to put the key in and wait for 10 minutes before car would start. I tried using a new key that I had made several years ago. It solved the problem. I am so happy now. Four months and no problem. Cheap way to fix. Get a key cut to code or try spare key that has not been used alot.