I STARTED MY SUBURBAN LIKE ANY OTHER DAY, STEP ON BRAKES TO RELEASE THE SHIFTER, PUT INTO DRIVE WITH NO PROBLEM, I WENT ONTO THE HIGHWAY AKA FREEWAY WITH NO PROBLEM, I NEEDED TO MAKE A PANIC STOP, AND THE BRAKE PEDAL WENT STRAIGHT TO THE FLOOR, TRYING TO USE THE EMERGENCY BRAKE PEDAL, THAT ALSO FAILED.. WHEN DID A AMERICAN MADE PRODUCT LIKE THE CHEVY SUBURBAN GAT SUCH A CHEAP MANUFACTURING OF BRAKE COMPONENTS... MY PREVIOUS CAR, 1987 VOLKSWAGEN VANAGON CAMPER NEVER NEEDED STEEL BRAKE LINES REPLACED. THE RUBBER HOSES I CAN UNDERSTAND... BUT STEEL BRAKES LINES SHOULD LAST LONGER THAN 25 YRS.