I have taken the interior of the car apart which would include the passenger seat, rear seat, seat belt harness, glove box, and door trim to locate the TCM. I found it floating in 2 inches of water and dried it out in a ziplock bag full of rice. I plugged it back up this morning and the car drives like new again, tiptronic and all. I did however have to buy a bag of rice for $2.99 so I'm out nearly three bucks...what a rip off.
I'm trying like hell to dry out the carpet after cleaning the condenser drain tube of what appears to be nothing. It may be the exhaust shield material getting hot and flexing over the end of the drain tube. All I know is the a/c has been running for nearly an hour and all of the water is dripping beneath the car, cross fingers. Hurray for the interweb!
I hate working on cars and I don't do it very much. I don't even change my own oil but I was able to (thanks to this forum) fix the problem myself and save at least $3,000 based on the rebuilding of my transmission one mechanic offered. That wouldn't have even included the TCM or water damage fix they didn't even know about when they quoted me that price. I'd hate to know that I paid for a tranny rebuild when it didn't even need it.
Thanks guys. To the original poster, I hope you solved your problem. Good luck.