Tl* the contact owns a 2003 gmc savana. while operating the vehicle, the steering wheel and brake pedal malfunctioned and did not properly operate. while depressing the brake pedal, the steering wheel would jerk and the brake pedal was hard to depress, which affected the vehicle stopping. the vehicle was taken to an independent mechanic who diagnosed that the brake hydro pump was faulty. the pump was replaced, but the failures continued. the contact indicated that the hydro pump had been replaced three times within the past eight months. the manufacturer and local dealer were not notified of the failures. the failure mileage was 100,000.