I've just finished buttoning up my cam swap, put in the new PCM, and the truck tries to start but shuts off almost immediately. I've done the PCM learning trick multiple times, but it doesn't work.

Help!!!!

 

what size cam??


i ended up having to drill a small hole in my TB plate to get it to idle

 

make sure you never turn key off during passkey relearn,it will start on 4th try.it will take at least 30 minutes to learn.

 

Have you cranked it, let it die, pulled the negative terminal, screwed it back in and cranked it?
Also, I've heard some people just put their foot in it when it starts for a second and hold it at X RPM for a while then let it idle back down.
Philip S.

 

FWIW, it starts and idles just fine with the stock PCM.

 

try passkey learn exactly as described

 

Is this the turn the key to on for 11 minutes, then off for 30 seconds, repeat two more times and it should start on the 4th try? If it is I've already tried it

You say not to turn the key off, but my instructions to turn it off. Should I just turn it to ACC?

 

TRY TO START,TRUCK DIES,LEAVE KEY ON ,SECURITY LIGHT STAYS ON,WAIT TILL SECURITY LIGHT GOES OFF ON IT,S OWN,TRY RESTART AGAIN,ETC. WILLSTART ON 4TH TRY.

 

It's alive!!!!!! Thankyou so much.

 

Glad I could help