Transmission seems to work fine in all forward gears in 2wd, TOD and 4x4Low. Reverse doesn't work in 2wd or TOD but does work a little bit in 4x4low. With the winter option on it will grab momentarily but lets go right away.

The truck sat for an unknown amount of time without fluid before my dad bought it this winter. While he was working on it for a couple months this winter it reversed once in 2wd, and once a couple days ago when I got here to see what I could do.

Has anyone run into this, or got any suggestions as to a solution? I have searched for similar problems but have come up empty.

We don't have too long to play around with it but any info would be appreciated.