[Cntrysthbst]

So sorry for your problems. I'm sure you will get more responses for this but what I'd do is take it to the dealer. A good dealer. Call one and explain the situation and if they sound head smart take it there and have them check it.
The dealer can check for the problem on their computer which may lead to something simple. Do gain some knowledge here with the replies so when you take it to the dealer, if you go that route, your not wondering as much.

Couple possibilities,

Wrong fluid type,
TCM needs flashed - resetting pressure points.

Another thing you might do is check for codes. See if you got a trans. code. To check for codes on yours - put key in ignition, turn to assc, then off - di this 3 times and watch your mile/trip readout, write down any "P" codes. When it says done, you can do it again if you missed something. And post back! Thanks