I have a 2004 Oldsmobile Alero, 160k Miles. I have been hearing a spinning/squealing type of noise when the car is in motion. I have just recently gotten all new brakes including pads, rotors, and calipers. I did hear the noise before and after the brakes were replaced. The noise is constant and soon as the car starts to move, it’* not extremely loud, unless it has something to echo off the surface of. Sometimes it squeals a little louder when applying brakes, but it will also spin and make the noise when coasting. I have read these cars have a lot of issues with wheel bearings, but it’* not really a grinding or vibrating sound. And it doesn’t seem any worse or better when turning left or right. It’* just a constant spinning noise; a good way to describe the sound is that it is similar to a salt shaker, the fast I go, the faster the “salt shaker” type of noise goes. Here’* a link to a YouTube video I recorded of the sound, if you wear headphones and try to block out the road noise, you can definitely hear the spinning noise.