Ok, So after all this "stuff", I reflected back and I'm pretty sure I got myself turned around and made some assumptions about what fits what based on bad data and bad conclusions.

I did take the Bravada out yesterday for a little mild mudding to see if things were properly working or not. I didn't go crazy because it's out in the middle of nowhere and my tires aren't the best. It performed awesome. And I also found out, using the RPO codes---something I didn't know anything about--- that I have a g80 rear and 3.73 gears. I'm happy about that.

It was the computer (TCCM) after all. My original Encoder works just fine. Transfer case is great. In the end I learned a bunch of stuff.. even if it cost me a couple hundred bucks. Thanks to everyone who tried to get me straightened out.

 

Congrats! And thanks for reporting back. These final reports are super helpful to those who have a similar problem in the future.