Ok, got an update. I went to the pick a part and got some pcm harness ends to make a bench top type harness to see if i can connect to the pcm out of the truck. With ground wires hooked to pins 1 & 40 on both the red and blue connectors, battery positive connected to pins 20 & 57 and also power into the OBD 2 connector and pin 19 ignition power and a wire going from pin 58 to pin 2 on the obd 2 plug my code reader/scanner connects just fine in about 1 or 2 secs with pass no codes present.

I then checked the pcm plugs and pins 1 and 40 on both the red and blue connectors have continuity to ground, pins 20 and 57 have 12V all the time and pin 19 has 12V with the key on.

I put the pcm back in the truck and plug into the under dash obd 2 plug and it wont connect. If everything has power and ground like its supposed to be then it should connect. I'm ready to give up on this but not just yet.

The only thing i came across is that with the key off pin 19 has continuity to ground, and with it on it shows 12V. With the key off and the neg test lead on the alt. stud and the positive test lead on pin 19 is shows -12V, could this mean that pin 19 is shorted to ground, but is somehow still able to send 12V to the pcm with the key on but is causing the issue im having with not being able to link to the the pcm thru the obd2 plug??

Any ideas?