Any ideas. It will shift through all the other gears but wont go into overdrive. It doesn't have a myster switch on it yet. I will put one on tomorrow and try to force it into over drive, but am lookin for other ideas.

 

I would try to get it to code out if possible, the old key on and off three times trick. But things to look at are the TPS, clutch solenoid and tranny temp sensor. I had same issues last year.

 

Sounds like your connection at the trans may be shot too, simple to check, and the cheapest to fix, its on the drivers side, right behind the linkage.