Ok, UPDATE...car went in...rotor was worn unevenly due to the dealership not tightening the lug nuts properly when the tires rotated. (the tech who screwed that up is fired, huh...go figure) They machined the rotor and the vibration is gone...we'll see what happens next...this is my LAST G6!!!
That is for sure a warped rotor. Same thing happened to me. Are you getting brutal gas mileage? My brakes were "on" from day one. Get them to machine the rotors now, then take them back again before 20,000 miles and complain. Under the warranty you will get new brakes.
I hope this helps. GM is such a sh^tshow sometimes.
YES I was getting terrible gas mileage. We'll see what happens now.