In an automatic transmission, there are many bands and fluid valves causing the vehicle to go into the proper gear. Testing the vehicle computer codes may show a problem but most likely a transmission mechanic will have to diagnose the problem.
The transmission is broken. Take it to a shop.
If this is an automatic transmission, more than likely the transmission is on it's way to the junkyard. Usually failing transmissions lose reverse first, then the higher forward gears - last will be the lowest forward gears.
Burnt forward clutches/ The forward cluth pack is stuck/welded together.... You need a overhaul...!
You are pushing against the rotation of the transmission when going into the upper gears. When you pull with it in the lower gears, then it is smooth and jumps into place. Or that's what i would think.
no oil in the tranny will cause the bands to streatch and will only allow your trany to work in revers
Inspect your brake pads. I would suspect they are worn out.
Well, that vehicle would have had a TH350 trans. So, it would have had 3 forward gears, and then a 4 low in the T-case, so actually, you could split each gear in the trans, making 6, actual forward gears. And then, actually, 2 reverses.
Tranny is going out
your clutch may not be fully engaging
What would cause the 1995 Nissan Pathfinder not to go in forward or reverse?
have you checked the fuses?
broken motor mount