1990 Chevrolet C1500

DRIVING ON CITY STREET AT APPROX 30 MPH, STOP LIGHT CHANGED TO RED AS I APPROACHED. WAS CLOSE TO INTERSECTION, PRESSED HARD ON BRAKE PEDAL AND IT STARTED SLOWING VEHICLE, THEN AFTER ABOUT .5 SECONDS, PEDAL WENT TO FLOOR WITH MINIMAL BRAKING AT THAT POINT. DID NOT LOSE CONTROL OF VEHICLE, AS SPEED WAS LOW ENOUGH THAT WHAT WAS LEFT OF THE HYDRALIC SYSTEM STOPPED VEHICLE. AFTER LIMPING VEHICLE HOME (WAS ONLY 3 BLOCKS FROM THERE), INSPECTION UNDER VEHICLE REVEALED STEEL BRAKE LINE RUBBING AGAINST FRAME RAIL JUST BEHIND FIREWALL, WHERE LINE TUCKS INTO FRAME RAIL, CAUSING WEAK SPOT THAT FAILED UNDER PRESSURE. REPAIRS NOT MADE YET, AS INCIDENT JUST OCCURED, WILL NEED NEW STEEL BRAKE LINE FROM ABS CONTROL TO REAR AXLE. CAN SAVE OLD PART. *JB

REPORTING NOW BECAUSE I HAVE BRAKE WARNING LITE AND NO APPARENT REASON FOR IT. FIRST AND SECOND FAILURES OF ISO VALVE WERE NOT LOSS OF BRAKES, ONLY A SQUISHY FEELING. I NOTE A CURRENT RECALL ON 91-96 GM UNITS THAT SEEMS TO BE RELATED TO THIS PROBLEM. NEED ADVICE ON HOW TO ATTEMPT RECOVERY OF OVER $500 WORTH OF REPAIRS THAT I PAID FOR WHICH NOW APPEAR TO BE A FACTORY DEFECT AND I NOW HAVE A BRAKE WARNING LITE WHICH MAY BE THE SAME ASSEMBLY GOING BAD AGAIN!. NOTE RECALL IS LIMITED TO 91 TO 96 UNITS AND I AM A 90. NEVERTHELESS I WANT TO TRY. DEALER HAS BEEN SERVICE HAS BEEN EXCEPTIONAL. NO COMPLAINT AGAINST THEM.