Truck will start and immediately die.

[JeezLouiseGMC]

Welp I got the ole girl home and you’ll never believe the fix. Some dude came up and suggested that I try and straighten the wheel and leave the key on to see if that’ll fix it. Well at this point I was like welp I tried everything else so why not. So I tried it you the security light stopped flashing and you’ll never guess what happened?? It started right up?? Wack

 

[df2x4]

That's the relearn procedure for the PassLock. It's described briefly in that thread I linked earlier. Don't count on it working all the time unless you fix the issue, but glad it got you home.

 

[JeezLouiseGMC]

Welp the problem is becoming more frequent, almost to the point where I’m afraid to drive it anywhere.. I ordered that resistor to give it a try, but If that doesn’t work idk.. wish me luck boys

 

[JeezLouiseGMC]

Also a question: when it says cross the wires with the resistor does it mean like in an H pattern?

 

[Elroy]

just get a black bear tune, it will drive better in addition to solving the problem

 

[eshaw]

I think your only real lasting options are going to be a security relearn or have the pass/lock feature turned off in the ECM. It's kind of strange that it would start doing this with the original black box that came with the truck.

 

[JeezLouiseGMC]

just get a black bear tune, it will drive better in addition to solving the problem

Id love to and I am planning on it, However I am a highschool kid and financially that's just not an option.

 

[Elroy]

its not expensive, they did my '15 just by plugging into the OBDII for about $250 , but they were in my area for a couple days, for my 96 i had them make a computer for me and send it because they cannot do those through the port, i think that was $450?

 

[df2x4]

its not expensive, they did my '15 just by plugging into the OBDII for about $250 , but they were in my area for a couple days, for my 96 i had them make a computer for me and send it because they cannot do those through the port, i think that was $450?

It's about $360, and that's including a spare PCM so you can keep the stock one.

 

[JeezLouiseGMC]

It's about $360, and that's including a spare PCM so you can keep the stock one.

I went ahead and bypassed passkey and it seemed to fix the problem. now I know this really isn't the place to ask this but as far as getting a tune, would it be better to swap in a 411 with the correct tune, or just get a tuned black box? I have one I took out of an astrovan and I wouldn't even know where to start as far as getting it tuned correctly.