Troy, i purchased a tuned PCM for the lnf, ran through the security learn, security light is out but still will not crank over..

 

Any ideas ?

 

zzperformance was not much help when i called them..will try them again tomorrow..

 

Tony.

Tony,

 

Which car is this for? Was the VIN put into the PCM prior to install? When you say turn over, do you mean it will crank with a no start or wont even crank?

 

-Scott

Tony..... which car is this for?

 

No Crank? Usually a security issue in the PCM will still allow car to crank, just not start...

Yes they did install the vin,, 2010 cobalt ss will not crank over and their directions say it will not crank, i will post a link to their website.

here you go.. the bottom of page has directions for security relearn..

 

I did reinstall the original and the car cranked and then started when i let go of the key and then was normal after that, put the zz perf back to see if the security light would be on but it was out, was going to try thr relearn procedure again but light remains out.

 

http://zzperformance.com/cobalt_ion/products1.php?id=1062&catid=187

Yes they did install the vin,, 2010 cobalt ss will not crank over and their directions say it will not crank, i will post a link to their website.

 

Sorry Tony..... I have no clue. I still find it weird it would cause a no crank issue....

Tony....if that PCM does not work out....

 

I dont know if you realize, but SLP is right in Toms River

 

http://www.slponline.com/main.asp

 

they do great work..... they did a Supercharger on a Pontiac GXP for us.... 550+ hp when done.

 

I am sure they can tune that Cobalt for you also....

Thanks troy,, see if scott has anything..seems to know something he knew the pcm needed the vin installed..

You did it multiple times like it says tony?

 

-Scott

yes, ran through their procedure and when the security light went out thaught i had it..

seems like maybe they messed up your vin. Def an electrical prob with the PCM seeing that when you install the stock PCM it fires right up. Call them tomorrow and see if they have an easy way around it. I bet you have to ship it back though Tony. Sorry bud but this is the problem with the newer performance vehicles, things either work right away or not at all. I miss the carb'd days and the tinkering.

 

I agree with Troy, SLP is great and local to us.

 

-Scott

Ok i can check the vin, they have a tag on the pcm i will see if it is right on the tag to start, then will have to check the pcm for the right vin..

 

Thanks..

Tony.

removed the pcm and checked their tag, tag has the correct vin, i guess if i hook a scanner it should show the vin they installed and i can check that.

 

Thank's guy's..

Tony,

 

I know you know your stuff, but is it possible a harness/wire is unplugged somewhere? I don't normally believe in coincidental failures, but is it possible something else failed?

 

If you go back to the old pcm, does it still work?

yes, starts right up with the old pcm..

security light is out seems to have learned the security code..

Ok. I'm out of ideas. Good luck and have a Merry Christmas!