[craig1778]

i've got a 2000 jeep wrangler sport with a inline 6 and an automatic transmission. i just got into offroading and took it out yesterday and and put it in 4wd low. i was goin about 10-20 mph with it in low and now it will not shift from 2nd to 3rd. what could be causing this and what's a good solution? i would take this to a mechanic but since i live on a military base, i figure they would just try to screw me.