I will be updating this thread as info is given to me about this issue. Feel free to chime in if you like with thoughts.
I dropped her off yesterday morning and tried to explain all that was going on with her recently. I made this appointment last week when I was noticing that there was a flare in the shifting in Sport mode between 2-3 and 3-4. Well on Wednesday of last week, on my way into work (about 4 miles away) just as I was leaving the driveway all hell breaks loose as I start driving away. The dash is lit up all over the place. Check engine warning and chime, ABS failure warning light/symbol and chime, big red X call dealer warning and chime, the speedo is bouncing all over the place and the car is now in limp mode (stuck in 2nd gear). I need to get to work so off I go.
I try not to run her above 3K RPM as it just feels bad and the local speed limit of 35 needed to be watched. I don't even know what speed I am going because the speedo is bouncing all around. I drive her home and leave for Thanksgiving and don't drive her again until driving her yesterday to the dealer.
I have a OBDII reader and got a U0073 code I think(this is from memory now) and there was still the check engine light but the car shifted thru all gears. I got it to do the flare for the tech as well as the shudder at 48MPH. It is at the dealer and the thought so far is obviously transmission, but they are not sure where the issue is and if a repair can be made or a new one in installed. I vote for the new one. I really don't want to deal with this again in a few months, and feel any repair will lead to that.
I'll keep the group posted by up dating this thread.