DRIVING THROUGH HEAVY TRAFFIC ON AN INTERSTATE HIGHWAY DOING APPROX 45 MPH TRAFFIC WAS STARTING AND STOPPING FREQUENTLY WHEN THE TRAFFIC CAME TO A SUDDEN STOP I PUT ON MY BRAKES AND THE PEDAL WENT TO THE FLOOR WTH NO WARNING WHAT SO EVER AND I STRUCK THE REAR OF ONE VEHICLE , AND THAT DRIVER HAD INJURIES WHICH I DO NOT KNOW THE FULL EXTENT OF. AFTER MY VEHICLE WAS TOWED TO THE BODY SHOP WHICH I HAD $3,252 OF DAMAGE THE VEHICLE IS REPAIRED HOWEVER IN THE PROCESS OF THIS THEY NOTICED I STILL DO NOT HAVE BRAKES AND AFTER THE MECHANIC INVESTIGATED IT IT WAS NOTICED A BRAKE LINE CORRODED THROUGH CAUSING MY BRAKE FAILURE AND ALL MY BRAKE LINES NEED TO BE REPLACED AT A COST OF A MINIMUM OF $1600.00 BUT PROBABLY CLOSERT TO $2000.00 I HAVE OWNED THIS TRUCK FROM NEW AND FIND IT HARD TO FATHOM THAT GM DOES NOTHING FOR SAFETY WITH AN ISSUE AS THIS. THIS VEHICLE HAS 128,000 MILES ON IT AND BEEN MAINTAINED WITH CARE AND HARDLY DRIVEN IN WINTER MONTHS SINCE I HAVE HAD OTHER VEHICLES FOR MY WORK FOR THE LAST 9 YEARS SO ROAD SALTS MAY EFFECT IT BUT THIS VEHICLE DID NOT SEE DAILY USE FOR YEARS. THIS ISSUE SHOULD HAVE BEEN DEALT WITH A LONG TIME AGO. I QUESS IT WILL TAKE INCIDENTS LIKE MINE FOR SOMETHING TO BE DONE, I AM JUST THANKFUL NO ONE WAS KILLED, WHICH EVERYONE SHOULD KNOW WITH NO BRAKES SOME ONE IS BOUND TO IF THIS DOES NOT GET RESOLVED. *TR