tranny problems

need help i am out of ideas my 1989 jimmy keeps jumping out of gear and makes a real grinding noise can any one help

need help i am out of ideas my 1989 jimmy keeps jumping out of gear and makes a real grinding noise can any one help

When trannys jump out of gear, it's usally due to worn out gears or synchros in the tranny. Bottom Line: a replacement is uaually cheaper than the fix!