I had just recently bought the vehicle. I was driving and I had one back seat window down about 7 inches. I got up in speed to about 35-40 MPH. The sound will blow your ear drums out. Sounds like a helicopter landing on the car. It actually sounds like the top of the SUV could rip off. It was so bad I wrote to GM about it twice. I have received no reply from them. This only happens when back windows down and fronts are up.
I had just recently bought the vehicle. I was driving and I had one back seat window down about 7 inches. I got up in speed to about 35-40 MPH. The sound will blow your ear drums out. Sounds like a helicopter landing on the car. It actually sounds like the top of the SUV could rip off. It was so bad I wrote to GM about it twice. I have received no reply from them. This only happens when back windows down and fronts are up.
- yooper01, Abrams, US