[Richie]

Very nice CTS. I like the wheels. Regarding the Onstar Antenna, they did away with the back window antenna in '05 or '06. I have an '07 CTS and it just has the rooftop XM Satellite Antenna. I'm not sure if that's the Onstar Antenna as well, but I would imagine it is.

By the way, I really like Onstar, but it is a little costly. I got 1 free year of the Directions and Connections plan when I bought the car, but after the 1 year was up, they wanted $300 for that plan. I ended up taking the Safe and Sound plan for $200 which includes all the services except directions. One thing I really like is the hands free calling. It works great and it's very user friendly (it's completely voice activated).

Lots of luck with your new car. I'm very happy with mine.