Transmission won't engage into any gear except park?

If the shifter actually moves the lever on the box then check if it makes a grinding noise going into park (engine on). If so the box is working and it is a diff or shaft problem. No forward or reverse and no noise then it could be anything from drive plate back. Stripped torque converter turbine spline maybe. Bad pump, check cooler flow to verify.

mags
June 2010