When this happens it will scare the life out of ya!!
Sent it to dealer and they kept it for 2 days to verify problem (they did!) and said they "reset tranny to original factory specs". The first time it didn't work so they did it a "different way" and this time it took.
I got car back and it is shifting fine.
Any comments on the various ways of resetting the tranny? BTW there were no codes logged, but the service manager did verify the problem and honestly I was very impressed with the dealership going out of it's way to verify and fix the problem.
Comments?