Transmission help!!!

[junk yard dog]

I just bought a 1993 full size blazer from a junk yard and it did run and drive, on the drive home I lost drive. It now only moves in 1,2 and R. So the big question is am I going to need a full rebuild or new transmisson, or is it going to be something easy?"never is"
Thanks guys

[transbuilderguy]

if you have no 3rd or 4th then most likely cause is the 3-4 pack burnt or there is a hydraulic leak in the 3-4 system. short answer it will need to be rebuilt.