BRAKE SYSTEM NOISE TROUBLESHOOTING TIPS
Vibration is the main source of noise in a brake system. Noise generally results from rust, distorted or loose components, and/or the wearing or weakening of an original part. As components weaken or become fatigued from the heat and stress generated in the brake system, they no longer fit properly. Any brake system component vibration will result in a very audible, irritating noise such as a squeal.