Ok, so first off I know this is my first post but Ive been lurking around... I did search and found a ton of good info but I'm at an impasse because this issue seems electrical. Electrical is not my bag, baby...

So I bought this truck recently, needed tranny rebuild and guy was upfront told me truck had gotten stuck in 4hi. He took it to local shop, they pulled the fuses for 4x4 pulled the tc shift motor, shifted case out of 4. I figure no big deal, prob needs new $120 TC motor its a bunt...

So I've rebuilt trans and did COP job to correct a miss. Moved on to 4x4, been through pretty much everything and I think the PCM is shot... I'm getting no current (other than the constant) to the shift relays when MSS is turned (I tested the switch in a different truck it works). If I supply current directly to TC motor it moves so that is good.

Can someone tell me if I'm missing something here? To be on safe side I replaced fuses 11,29,30, 111 plus I replaced both 4x4 relays to rule them out. It seems that I'm not getting power from pcm to relays when MSS is turned, no 4x4 lights on dash etc... Throwing no codes either.

I've been told the ABS is involved in 4x4 operation....I'm just lost

Any help is appreciated

 

Looking for diagram with pcm pinout to rule out wire or connector problem...

 

Buuuump it for some help