why has it lost reverse
I don't have one.Help?
Most likely transmission related. Hard to diagnose over a forum. Have it looked at.
Yep, like Tom said, Jeeps have a problem with the clutch pack, as that is an internal part it most likely need overhauled.
Looking for a Used Grand Cherokee in your area?
CarGurus has 69,215 nationwide Grand Cherokee listings starting at $1,300.
Search Jeep Grand Cherokee Questions
Jeep Grand Cherokee Experts