I just bought an 04 GT a week ago. It has 24,000 miles on it. After a week of driving it every I noticed the brakes work perfeclty. I got in my car today, started the engine, and noticed a slightly different sound. Considering this car is new to me, I don't know if this is something I just didn't notice before, or what. When I stepped on my brake pedal though, there was a skweaking/grinding type of sound. It sounds pretty much the same as if you put a power sander on a peice of wood. (I spent a few days recently sanding wood with a random orbital sander, lol). So this sound only happens as you step on, and hold the brake pedal. The car was parked the whole time, and I never got it moving, or attempted to. Also, the pedal feels like it's twitching. Not a slight twitch, but a significant jittering. And it's random too, meaning there's no pattern or timing to it. Then the noise stops, and the pedal kicks back at you. That's pretty much it. I attempted pumping the brake lightly a few times, but nothing changed. From the looks of it, these brakes are stock, and I haven't done any work on them myself. No racing either, just normal day to day driving. Has anyone heard of this happening before?