I did the yellow wire cut about 2 years ago but car is doing the same thing all over again, however it is now shutting down while driving, the 10 minute reset has to be done on a regular basis, these problems all have occurred during winter weather. I have been through all the tow trucks and mechanics prior to the fix, replacing fuel pumps all the big money items. My suggestion to remedy this problem is quite different... After getting started get full coverage on vehicle and then have someone steal it and then set fire to it..problem fixed! (My suggestion is purely humor intended). We will never buy another GM car again, never had problems with the Fords I owned but the new ones are all probably crap also. I predict that GM will go under even after this restructuring only for the fact that the trail of junk they leave behind points right to them.
Good luck,
Your fellow suckered GM buyer

Tell us how you really feel. People buy price, will always sell.

I want to bypass the passlock 2 system on my 99 intrigue and I've heard you can put any resistor in there and the car will "relearn" the new value. Any ideas on this? Thanks, guys.

Has anyone ever run into problems with a 1998 GMC Extended Cab truck where the vehicle will start then stall, the security light will flash and then immediately go out. I have tried the relearn procedure where you bump the stater and the wait 10 mins...I have repeated this process 3 to 6 times with no results. This problem all started after I replaced the transmission in my truck. I left the key ahead while I replaced the transmission as I had left the truck in neutral in order to roll it back and forth to get it on the car lift. The vehicle ran fine before I changed the transmission as I drove it in the garage with the transmission slipping. Shut the truck off and left the key turned ahead. Removed the trans, rolled the vehicle outside as I was working on it after hours in my uncle's shop. Rolled it back in a couple days later installed the replacement trans. Discovered I had left the key ahead all this time and the battery was dead. Hooked up the battery charger, tried to start the truck and it would start and die and the security light would flash for 5 seconds and then go out. Tried the relearn for 3 times 10 mins and 6 times 10 mins with no change. Anyone have any suggestions? Another interesting thing is the truck will run when I installed a computer for a 97 suburban and it will run, but the computer is unable to be read by a Snap-on Solus scan tool. I don't have a lot of money in the truck and don't want to replace parts randomly...anyone have any knowledge of this system that can point me in the right direction?????:banghead: Thanks for your time!!

This may have been a question addressed in the previous 37 pages. Once I cut the yellow wire and butt splice it, where does the toggle go? Is the toggle on the dash, behind the radio, hanging down below?

Nevermind dorks, I figured it out. I made a video of the step by step procedures.

http://www.youtube.com/watch?v=xnjLkgPpVoY

This may have been discussed previously in the last 37 pages so I'm sorry if this is repetitive. I've had my car towed 5 times, misdiagnosed 4 times and I've had the fuel pump replaced twice, just to find that my security system is faulty. I would have preferred to have the car stolen! I've just been notified by the pontiac dealership that I need a passlock sensor. Does this mean that its too late to perform the bypass discussed earlier?

OK That post talks about just cutting the yellow wire in the passlock system which yes will work until the car's battery fails or goes dead. He'd be better off using my resistor method instead.
Tell about the resistor meathod as I'm new to this forum and can't seem to find it. daylongdriver

I would just write Chevy at the Passlock program.... cac@chevrolet.com

Instead of reading the ohms and installing the proper resisters, how about buying a bypass module off ebay for about 25 bucks.
How well do they work?

Hello from Mexico, here's the solution (worked for me):

Pull out the stereo, then look for the cables coming out from the ignition switch, then start the car, when it's running cut the yellow wire, that will left theft system light on all the time, at this point you will not have problems starting the car anymore, you have been disabled the theft system.

Now, once you have disabled it, you need to do some hack to the bcm to turn off the light, how can you do that ?? Easy, put an ohmeter connected to yellow wire from ignition switch and ground (probably doesn't show any resistance) then put REVERSE (we know that the car wouldn't start) and turn the key to start position, at this time ohmeter shows up the resistor value in the ignition cylinder, then you need to find some resistor value with 10% tolerance up or down to replace (i have to put 3 resistors in serie or continuous to reach the ohms value)when you have it with car started connect the new resistor from ground and now to the yellow wire that goes to the bcm and should turn off the light, if everything went fine you can solder that resistor to the 2 cables and use tape, now you have been disabled theft system and turn off the light too on the dash, because the resistor value always be the same even with the car turned off, and you can start the car rapidly with no problems, it starts and the light goes off, if you have any doubt i left my email: ivanhermida@gmail.com

Regards.

what should I do when i forgot my password on my keys? any help?

A locksmith forgot their password to their keys......ok....:runaround:

I have a 200o Malibu and tried the resistor method the other night. It wasn't acting up at the time. I used a 2.2k 1/4 w resistor installed it as described, it started no problem but the light stayed on. The next morning I started the car and there was no light on, GREAT !!. Now today, 2 days later the car won't start again. The anti-theft light is not on but it acts as if it is. Any one have any suggestions? Should I just try the toggle switch method ?

Thanks for any input

SMOKEY, did you try to check what the resistor value in lock cilinder you have ??? In my case was 860 ohms, so i put a 220-330-330 ohms continuosly on series, that gave to me 880 ohms (10% tolerance) and works great !!!, you need to check the resistor value, not always will be 2.2 k, put a similar resistor value and the light will go off forever, never have the starting problem and the light on again.

I didn't check the resistance. a post earlier said that a 2.2K would be fine.
To update..I had the car towed to an auto electric shop and they told me that they disconnected the bypass that was installed when I had a remote start installed about 10 years ago because it had failed. They recommended a bypass module be installed. The shop said that the car would start now with the key but if I used the remote the car would act as though the anti-theft was engaged. Well I used the remote start and let it run for about 15 minutes then the car shut down as it reached the proper temp. I then used the remote start again again, then went out for a short ride and the car ran fine. Does trhis resistor mod as is work with a remote start or is more work required?

The bypass is used to "trick" the bcm with the resistor, with this resistor "permanent" you will not need a bypass anymore, just your remote starter only, doesn't need to reinstall a new bypass module for your remote starter, just calculate of find the resistor value, put it on between the cables and the light will go off and you can use your remote starter also, i've done this mod a 4 months ago and forgot about the problem.

OK...I just had a look and the shop removed the resistor I put in and put the wiring back to original. So what went wrong with my mod ? It was a 1.5k resistor I used. I cut the yellow wire while the car was running, and soldered the resistor to the half leading to the ignition switch and the other end of the resistor to the stripped black wire. I put a shrink tube on the loose end of the yellow wire. The theft light remained on for a few hours but was out the next day when I drove it. It started for 2 days and then quit. I thought once I cut the yellow wire the anti-theft was disarmed. The only reason for the resistor was to keep the light out. Right ??

That's because you don't check the resistor value before put the new resistor between the cables, also, the resistor needs to be in the yellow cable going to the bcm and the black (gnd) cable, yellow cable for lock cylinder need to be isolated, please check your lock cylinder resistor value and put an equal resistance, that disable your anti-theft system and turn off the light all the time, also you can use your remote starter again, no bypass needed.

Hello. I am here to share my passlock horror story. My car started doing the no start with the security light flashing about 6 months ago. I do the relearn and it works for a while. Then it gets to where I am doing the relearn for every start and finally no start at all. I search the net looking for answers and found that this is a common problem with gm vehicles.

I read about the resistor trick and was ready to try it when I started reading that it is only a temporary fix. Another part of the system like the bcm could fail and then the car would stop starting again. This bummed me out.

Next I started to look for a permanent fix and I found a bypass on this site
How to disable and remove VATS, PASSKey and Passlock Security Systems in GM cars (http://newrockies.com/?ap_id=np9911)

I don't really know much about cars but my friend who installs car stereos put it in for me and it started right up. I couldn't believe it. I don't know if there are better devices out there but I know this one worked for me. I even picked up an 02 Alero that wouldn't start for 800, put the bypass in and it worked on that one too. I gave it to my niece. Anyway just thought I would share a fix I know works. Hopefully this helps.

That's because you don't check the resistor value before put the new resistor between the cables, also, the resistor needs to be in the yellow cable going to the bcm and the black (gnd) cable, yellow cable for lock cylinder need to be isolated, please check your lock cylinder resistor value and put an equal resistance, that disable your anti-theft system and turn off the light all the time, also you can use your remote starter again, no bypass needed.

This works. Did this method on a 95 cutlass. Cost was all of $2 for resistors(had to buy a 4pack, didn't have just one) from radio shack. Over a year ago and not one no start.

Thanks for taking time to speak about this, I arrive to really feel strongly about this and adore obtaining out far more on this issue. If doable, when you get knowledge, would you head updating your weblog with extra details? It's incredibly valuable for me.