BRAKE PEDAL WENT TO THE FLOOR, AND THE VEHICLE LOST BRAKE POWER. THIS OCCURRED WHEN THE BRAKE PEDAL WAS DEPRESSED TO STOP THE VEHICLE AFTER ACCELERATING TO 20 MPH. THIS RESULTED IN THE CONSUMER REAR ENDING ANOTHER MOTORIST. THE VEHICLE WAS TOWED TO A DEALERSHIP, WHO WAS UNABLE TO RESOLVE THE PROBLEM. *AK AS OF 5/15/04 NEITHER THE GM INSPECTOR NOR THE INSURANCE ADJUSTER WERE ABLE TO PROVIDE A REPORT. *NM