See sig. for what I have for a truck. I have an NP208 I think. In the snow when plowing, sometimes it would pop out of 4 wheel high and I would put it back in. Well today on the highway in 2 wheel high I was going about 65 and all of a sudden I step on the gas and it would not go. I coasted off the highway. I looked at the t-case shifter and it seemed to be not in 2 wheel. I tried putting it in 2 wheel and it felt kinda funny, still no worky. I then was able to get it into low range and drove slowly to where I was going. The trans was rebuilt 3 months ago. I have not checked the linkage yet, but to me it seems internal in the T-case. Any ideas or thoughts would be appreciated. T.J.