Grinding noise - This noise is common primarily during the first few stops on rear drum brakes and on some front disc brakes due to the formation of trace corrosion if the vehicle has not been driven recently. If the noise disappears after a few stops, it does not indicate a problem. Groan noise - On vehicles equipped with automatic transmissions, a slight groan may be heard when coming to an abrupt stop or when allowing the vehicle to creep forward slowly from a stop. If your vehicle develops brake noise, and you feel unsure about it's meaning, you should always take your car in to a qualified technician. Factory trained technicians are best qualified to inspect and offer an accurate diagnosis of specific makes of vehicles.
Some manufacturers offer a choice of genuine factory replacement parts.