Ok guys,
I have a 2004 fx4 with the center shift. When I first start the truck up in the morning I can get it to go into reverse but no reverse lights when I mean into reverse I mean it will actually move. But when I get to work (30 min drive) it will not go in reverse and just rev up like its in neutral or park reverse lights still off. I tried adjusting the linkage I'm thinking its something to do with the DTR sensor but I would think it would still go into reverse with that bad? Trans fluid is full also. I had the transmission rebuilt 50k ago they installed HD clutches and a trans go shift kit, I also have an edge on level two.

 

Have you tried returning the tune to stock?

 

I did try that. Come down to the conclusion that there is a internal problem will be bringing in to the shop to get the transmisson rebuilt again it looks like.