Hey: folks I have a problem with my 91 Jimmy… I shifted the truck from 2H to 4H at about 10 mph I felt the 4WD kick in then all of sudden it felt like the truck went into neutral. Now the truck was working fine before I was just coming home from work which is about 175 miles round trip. Now the truck will move only about 5 mph at 4000 rpm or higher in any gear in 2H, 4H, and 4L it’s a little faster in 4L because of the taller gear I guess. Now if the truck is in drive I can push it backwards with me foot and vice versa if it’s in reverse the fluid is clean and full all linkage in tack and not binding. Please help my wife is going to kill me if I have to dump money in this truck which I just bought 1 month ago it’s a 91 Jimmy 5.7L automatic with auto hubs, and 133000 miles.