01 2wd v6 sport. just replaced the front bearings. there is a loud high pitched noise that gets louder with speed but goes away when i brake. it is on the pass side front. i can pinpont it to the wheel area because it gets really loud when the window is down and there is concrete for the noise to bounce off like a curb or wall. it also sounds too high pitched to be the bearing. could this be a warped rotor?