1995 4wd tahoe, need advise on transmission controls.

[kewljay223]

I'm sure he wired his vss to his pcm. That way it knows how fast the truck is going but I'm sure the auto was tuned out since he's running a manual.

As far as the pcm controlling the trans alone, I've never seen it done and I don't think it's possible. It's not meant to be a "trans controller" only. You posted another thread about this after tou didn't get the answer you wanted right away. You could have added the 13 wires today and had it done with instead of dicking around trying to run two pcm's. Just hook it up like it's supposed to be and be done with it. And on top of that, trouble shooting Will be much easier that way