I have a '09 G8 GT. There are two sounds that my dealer cannot solve. The first is when the driver's window is down and the door is closed. The window makes a rattling sound. If the window is up, it is quiet. The second is, when you are about to stop (5 - 10 mph) and the transmission is put into neutral, a clunking sound is heard just before the car comes to a stop. Dealer says don't put it into N. Other cars that I have had do not make this sound. Any ideas?