my over drive gear is not working

Does it slip in any other gear?

No other gears slip only O/D 1st and 2nd stick a little between shifting

OD is run through the same clutch packs as the other gears. Therefore, I don't think it's clutched. Is the fluid clean and full?

Sorry for delay I'm working . Yes I changed tranny filter new fluid and full

OD clutch is at end of transmission and can be accessed by taking the end cover off. Such problems are common for this transmission and replacing the OD clutch works.

The 1 - 2 sticking intermittently indicates the shift solenoids are not working well and quite often are the cause for transmission failure.

Thanks so much for help, so changing OD clutch is worth a chance?

Yes it is and might buy you some driving time with the transmission.

Where can I buy the overdrive clutch plate away I'm not having any luck maybe I have the termonology wrong?

You can try the dealer or any place that does transmission rebuilds. Parts stores would only have the complete kit.

Replacing the clutch plates and disks would not work if the seals are bad and they would have to be replaced as well.

Installation on vehicle is a little tricky as the thrust washer ( item #9 in second diagram) tends to fall off. Use petreleum jelly to hold the retainer in place.