To answer this question pending all your suspension parts are in good working order. I found that replacing all the push pins on the wheel liner with smaller ones will make a tighter seal to the wheel well. As well, when you open your driver or passenger door and look towards the inside fender, you will see a long grey foam insulator between the fender and body. Sometimes this gets pushed in and is not seated properly. Believe or not, makes the craziest sound and rattle which will make you think something is very wrong with your car and will take forever to diagnose unless you have sound recorders set up around the vehicle to pin point. Higher winds and speeds amplify it more greatly. I've had my Verano brand new since 2012 and literally know this car inside and out now. Even have the dealer service manual which makes fixing problems and diagnosing much easier. Saved a lot of $$$$$ from this manual. Just don’t have the time to get on here much anymore to answer questions or look things up to help people. I’ve had so many issues, I can see by reading this forum from time to time people have been having the same issues or similar. Yes some people will say their Verano is fine no problems blah, blah, but trust me this car will cost you a fortune sooner or later regardless how well you maintain it. GM should have issued countless recalls with this vehicle I can’t even begin to go through all the parts and problems again. Look at the Chevy Cruze, same platform and just as many problems, if not more. But I have mentioned most of them before in another forum. Vehicles are not build to last long anymore. Vehicle prices increase yearly, and cheaper parts installed. Theses engineers know the life span on most parts, and magically they happen to fail right after warranty. Surprise, I think not!!! These corporations are not dumb and spend a lot of money on engineering and development. Anything to save them money in the short term, and make more money long term when warranty expires is money well spent in their eyes. And to boot, some will still come back after the warranty expires anyways to get their known problems fixed. Win all around for them lol, and the consumer suffers most. They never lose. We do!!!