When braking at low speed I hear and occasion creaking sound when I deprees the brakes. I had thought the sound was coming from a partially seized caliper on the rear passenger side of the car, however it continues. Now I suspect the front passenger side. Are there any shims that might cause this problem. I recently bought the car so I am not an expert as to the precise brake hardware. Just curious if anyone might know. Otherwise I guess I will hit to tomorrow and try to figure out what's up.