TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE DRIVING 15 MPH, THE CONTACT HEARD A PULSATING NOISE WHENEVER THE BRAKE PEDAL WAS DEPRESSED. THE ANTILOCK BRAKES ACTIVATED SUDDENLY AND HE CRASHED INTO ANOTHER VEHICLE. THE DEALER STATED THAT THERE WERE NO RECALLS AVAILABLE FOR THE FAILURE AND INFORMED THE CONTACT TO CALL GENERAL MOTORS. GENERAL MOTORS REFUSED TO REPAIR THE FAILURE. THE ANTILOCK BRAKE WAS REPAIRED TWO YEARS PRIOR TO THE RECALL. THE FAILURE AND CURRENT MILEAGES WERE 117,145.