Front drive.. differntial problem
 

Jeepers Creepers, help!... 1990 Cherokee Pioneer.. went out today and made it up one slope, but heard something... next incline, can't make it up... spotter says I have no front wheel movement... backed down... on the flat I observed front drive shaft turning in both 4H and 4L and not in 2H... so figure problem is in the front differential ???? Haynes book talks a lot about front axels, but next to nothing on the differential... any ideas what I am looking for? Is it a DIY repair or do I need real help?

Pull the diff cover off and see whats up.