I have an '05 STS and the center console around the shifter and cup holders gets very hot when driving for long periods of time (over an hour)?

I noticed that too a couple of days ago. But, I didn't pay attention to how long you have to drive before it gets hot.

It really becomes noticable after about an hour.

Check your rear ventilation controls and make sure they are not turned all the way to hot. The rear heat is channeled through the center console. When I shut this off it stayed cool.

your rear heat is turned on. I too noticed that on a 700 mile trip. The whole console was almost to hot to touch

Thanks for the info. I'll check the rear heat the next time I'm on a long trip.