A loud noise

I need some help, I own a 98 chevy s-10 2 door blazer and I hear a noise coming from the front driver-side, its a grinding noise of some type. I've lifted the tuck up and spun the tire and the only noise I hear is the break bads grinding on the rotor which they are not worn out yet. and the bearing is not making the sound either, so can any one help me out?:banghead:

is it like the sound of a circular saw slowing down?