I have replaced the neutral safety switch and the shift tube (broke due to difficult shifting). When a second person gets in and starts the truck, I can get under the truck with a socket wrench and very lightly move the trans lever while the second person moves the gear selector and it seems fairly easy to move. When it is just the driver trying to move the gear selector, it's almost impossible to shift into any gear without breaking the shift tube again. I followed the linkage cable and it seems to be not only in good condition, but looks like it's only a few years old.
Can anyone help me?
Also, is it possible that the linkage cable looks perfect on the housing, but could be getting stuck inside?