Every time I get in an 8th gen impala I test the rear windows and get the same results. My wife has an 07 and I have a 10. You guessed it. they both suffer from the same thing. Normally it wouldnt bother me cause i dont ride back there and I have a love of A/C, but my dog has taken a loving for going for rides and he likes to stick his head out the window , but the wind buffeting is so bad that it is just unbearable and have to roll the windows back up. Has anyone tried to find the sorce of this issue or found a solution?