Thanks RJ,

Yes, they've told me it was the lower control arm when I get there to pick up the car. Why they told me "Upper" on the phone, I don't know. Infact, I 've replaced that very control arm, last october when my car failed the PA state inspection because of that. I think the guys at the dealer did not like the fact that it was an aftermarket control arm.

I don't have any noise over the bumps and, tight turns but I will look into upper strut mount. Do I need to take the spring and the strut/shocks or just putting the car on the jacks works to change the bushing?

To be honest, there are no codes set for the transmission switch, however, it does not go to winter mode when pressed, and I suspect it changes between Econ/Sport modes either (Or, I can't feel the difference, But it definitely does NOT go into winter mode). For that reason I might buy one and put it in myself. But, NOT from them. they're asking $50 for the part, and $55 to install.
Thanks a lot for your help.
Ihsan