IMHO, your most expedient fix is to simply get a quality rebuilt or a used transmission out of a late model wreck that fit and have the same fitment (connectors, electronics, etc.)

Too much work to fix a 10 year old tranny that may have a lot more wrong than just a few simple things --- I worry that there is something you didn't fix years ago may have snowballed.

A modern transmission is to the point where it is harder and harder for a home rebuild.


Just for arguments sake -- get a code reader and read some codes from it.

My guess: the OD light died from excess flashing (or it has been flashing a long time, but because the bulb is out, you didn't see it).

So the failure has mushroomed.