I need some helllllllllp. I have a '90 GXE with 198k. About 3k miles ago, I started noticing a low humming noise coming from the front end (appears to be driver's side). I thought it was my tires as they had close to 60k on them. So I replaced them, but the noise was not affected. I know its not in my tranny or engine. It increases with speed so its something rotating. Wheel bearing??? I can put it up on a jack and there is no play. If so, how hard is this to replace and what tools and parts do I need? My rotors are also in need of replacement (over 110k on them). Could they be the culprit? Any advice would be great. Thanks.........DC944