My check engine light came on over a year ago- took it to the mechanic, said that the trans would need to be rebuilt. Parked it and started it to lut the fluids run at least once a week. Very minimal driving for the past year, and the light has been off.

Started driving it heavily last week and it was fine for 5 days. Check engine light on, and when I reach 40 MPH, doesnt seem to want to shift. Goes, in reverse fine.

Error codes read are P0700, P0600 & something with the clutch.....

any ideas?

I have a computer to read codes and test....all test were ok with Silinoids....