I had my 01 wrangler (v6 automatic) out on the trail tonight in 4wd high range. When I got back to the blacktop I put it in neutral but then could not get it to shift into 4wd high or 2wd. It will freely shift from neutral back to 4wd low. I had to drive the rest of the way home in 4wd low. I messed with it when I got home but still could not get it to cooperate. Any ideas? Thanks. Ted.