"Buffeting" from Wind through Rear Windows
for those of you who had mentioned the 'buffeting' from the wind coming in the car with the rear windows down, here is a 'semi-solution';
i installed the GM Accessory VentVisors, PN 17800852, on my sedan this weekend. while i must admit i didn't get it up to 60-70mph (too cold to play 'freeze out'), i did notice a difference with these installed. hope to have some better weather soon so i can try it at a higher speed. i actually bought them so i could leave my windows down slightly when raining, but found that it may be a 'fix' for that annoying wind problem also.
the last 4 vehicles i have owned i have bought these and i think they're the greatest thing since David Lee Roth left Van Halen......