So I just got done fixing my 4runner and was driving fine no issues or anything transmission fluid level was good and everything. Then one day I drove it about 40 miles or so and parked it at a mall and when I came back out to leave it would hardly move in reverse. Then I tried to go into drive and it did the same thing. Tried 4 high and still the same thing but when I put it into 4low it would work perfectly fine no issues shifting or anything. I recently changed the shift solenoid and trans filter and filled up the trans fluid again and still having the same issue. Does anyone know what it could be. I was told it is most likely the transfercase.