THERE IS NO WARNING THE PEDAL GOES TO THE FLOOR AND YOU DON'T STOP. I HAD A 5TH WHEEL TRAILER HOOKED TO MY 2006 GMC 2500 EXT. CAB LONG BED SIERRA P/U WITH 62,459 MILES ON IT. I WAS ABLE TO STOP IT WITH THE TRAILER BRAKES AND A SCRATCH ON MY FRONT BUMPER FROM A TRACTOR TRAILER THAT WAS IN FRONT OF ME. I HAVE OWNED OVER 200 CARS + TRUCKS SINCE I STARTED DRIVING. I DO ALL MY ONE WORK ON THEM AND I NEVER HAD A BRAKE LINE FAIL, I WILL BE 70 THIS YEAR. IT IS RIDICULOUS FOR AN 8 YEAR OLD TRUCK TO HAVE RUSTED BRAKE LINES TO FAIL. THE WORST PART OF THIS IS THAT NOBODY NOTIFIED THE PUBLIC THAT THIS WAS A PROBLEM WHEN THEY GMC KNOWS ABOUT THIS PROBLEM. I FOUND A GARAGE THAT FIXED THE TWO FRONT LINES. SO WE COULD GET HOME. THEN I INSPECTED THE OTHER LINES AND ORDERED THE COMPLETE SET OF STAINLESS STEEL LINES FROM EBAY, WHEN I REMOVED THE OLD LINES THEY ALL WERE RUSTED AT HIDDEN SPOTS TWO WERE CLOSE TO FAILING. WHY DO THEY HAVE TO WAIT FOR SOME ONE TO DIE BEFORE THEY NOTIFY THE PUBLIC THERE IS A SAFETY PROBLEM. THIS IS GMC AND OUR GOVERNMENT (NHTSA) FAILING THE PEOPLE. *TR