1070882
What year Jeep?
Spray the bolt threads with PB Blaster several times a day for a few days. It's the best rust penetrant out there.
For stubborn bolts, try loosening 1/4 turn at a time, tightening the bolt 1/8 turn between each loosening 1/4 turn. This will help keep the bolt from breaking and the body nut from breaking loose.[addsig]