could be the shifter linkage or cable itself also check fluid level if it is a automatic transmission or if it is a manual transmission could be clutch and throwout bearing
what would transmission not to shift in to overdrive
The gears in your transmission may be sticking or worn out. This would cause your transmission to not be able to shift.
Example sentence - The transmission in the truck would not shift correctly.
i think it would because it would make the gear shift better and lube them and help it
Leaky transmission lines would cause the fluid level to drop and eventually cause the transmission not to shift and go.
The transmission may shift hard due to it beginning to fail. However, it may also be due to low transmission fluid.
The same thing happened to my dads 96 Chevy S-10. The transmission was rusted not allowing it to shift. I would have the transmission checked out.
Sounds like a grenaded transmission
A bad transmission.
YES! You would help extend the transmission as well as have a smoother shift from your vehicle.
Consult a Local Transmission Shop
You may have a broken spring which disengages the transmission allowing it to shift or it is bad linkage going to the transmission.