This is actually on both my Corvette and my Silverado, and to lead in, there is still pad life, no pulsating, soft pedal, or any of that. It's not wear clip noise, it's a quieter, higher pitched sound. Best I've been able to find anywhere is "brake dust" as the cause. It will only do it (with either vehicle) when lightly braking at low speeds (as in traffic). It's very annoying (and somewhat embarrassing... if that makes sense to you) and almost every other car I've seen on the road doesn't do it. I was thinking of doing a pad/rotor job on both vehicles, so maybe there is a specific type of pad that won't do this God-awful annoying crap?