One problem related to axle assembly has been reported for the 1999 Jeep Wrangler. The most recently reported issues are listed below.
As I was driving down the road in my 1999 Wrangler, with only 70000 miles on it, and the entire rear end gave loose. Now I have a Wrangler, that is supposedly worth 14000, that is neither worth that nor is it drivable, and on top of that I have to shell out 1000 dollars in my own money to fix the thing.