There are noises coming from our 2007 Trailblazer that seem to be coming from the front and the wheel, maybe the right front one. The first is a squeaky noise that sounds like it's coming from the front end when we run over bumps in the road. The other is a "woop-woop-woop" sound that seems to be passenger side front wheel area - kinda sounds like the wheel wants to come off! But no shimmying or anything... also if i'm going uphill on the highway, it makes a low-pitched "Wooohh" sound. We just changed the air filter, so now we know it's not that.