yesterday a buddy and i took the pcm out to find the pcm code for the tw chip, after we put it back in it wont shift out of 2nd and the od light flashes 80 times... the key was out of the ign whats wrong????
its a 2000 4x4

 

You probably bent a pin on 1 or more of the connetors going in there. Unplug it, look VERY carefully at both parts, the connector plug AND the PCM unit and see if you can spot the one or more that are bent. Should fix the problem.
Did you unplug the batteries? If not you might've caused some voltage spike issues internally.
Just a thought... do the cheap fixes first, then go expensive if that don't fix the problem. Maybe use some contact cleaner right before you go back together with it just to make sure they are making good contact.

 

ding ding ding u were right he bent a pin, we got it straightned out, but hes kinda scared of doing it again when we do the chip since it weakend it, is there a way to replace the pin?

 

some trucks you can wiggle the plastic cover off. this will take some doing. then you dont have to pull the pcm so you wouldnt have to remove the main plug again good luck