WHEN TRAVELING THROUGH AN INTERSECTION AT A GREEN LIGHT ANOTHER VEHICLE ILLEGALLY ENTERED THE INTERSECTION. I SAW THE VEHICLE AND ATTEMPTED TO STOP BUT WHEN I HIT THE BRAKES THE PEDAL WENT DOWN TO THE FLOOR AND NO BRAKING ACTION OCCURRED. I WAS TOLD I BLEW A BRAKE LINE. THE CAR WAS REPAIRED OF THE DAMAGE FROM THE ACCIDENT BUT I HAD TO PAY FOR THE BRAKE LINE REPAIR. AFTER GETTING THE TRUCK BACK I BROUGHT IT BACK TO THE REPAIR SHOP FOR AN ALIGNMENT WITHIN A FEW DAYS. WHILE THE REPAIR SHOP WAS DRIVING THE CAR IN FOR THE ALIGNMENT A SECOND BRAKE LINE BLEW. THERE IS NOT A RECALL FROM GMC AND THERE NO REASON WHY THE BRAKES LINES SHOULD BE RUSTING OUT AND BLOWING ON A CAR THAT IS WELL MAINTAINED. *TR