A process of elimination
A.>check pad indicators
B>Rotor glazing or metalic buildup in pads [sometimes eliminated by the backup trick or sandpapering/sanding the rotors
C/ Caliper slides >>If there is any play in the wheel bearings, it causes the rotors to very side to side , which moves the pad/caliper to slide causing chirp>. eliminiated by lubricating the caliper slide mounting points as well as ugypugy [membrane] on the inner and outer pad contact points
Last edited by GreenLantern; 05-28-2009 at 08:49 AM.