NHTSA Complaint #10403668 — 1999 GMC SIERRA 2500

1999 GMC SIERRA K2500 4X4. AT JUST OVER 100K MILES THE ADVANCED RUST AND CORROSION ON MY STEEL BRAKE LINES IS VERY BAD. THESE ARE THE HARD GALVANIZED LINES THAT ARE IN THE ENGINE COMPARTMENT BENEATH THE BRAKE FLUID RESERVOIR NEAR THE FRAME, AND THE HARD GALVANIZED LINES THAT RUN ALONG THE INSIDE OF THE FRAME RAIL ON THE DRIVER SIDE (LEFT HAND SIDE OF THE TRUCK) FROM FRONT TO REAR. THIS STARTED A FEW YEARS AGO AND HAS GOTTEN PROGRESSIVELY WORSE. THE CORROSION IS IN THE FORM OF RUST THAT IS FLAKING OFF IN CHUNKS. WITH THE STEEL RUSTING AND FLAKING AWAY LIKE THIS, IT WILL COMPROMISE THE INTEGRITY OF THE BRAKE LINE, SIGNIFICANTLY REDUCING THE ABILITY FOR THE BRAKE LINES TO HOLD PRESSURE, AND AT SOME POINT MAY ULTIMATELY RESULT IN BRAKE FAILURE. I HAVE OTHER GM VEHICLES WITH MORE MILES THAT ARE OLDER I'VE HAD SINCE NEW AND THE BRAKE LINES HAVE VERY LITTLE SIGNS OF RUST AND CORROSION. I AM NOT HAPPY ABOUT THIS AS I TAKE VERY GOOD CARE OF MY VEHICLES AND THIS IS THE FIRST GM VEHICLE THAT I'VE SEEN THIS HAPPEN. I WILL HAVE TO STOP DRIVING THIS VEHICLE TO AVOID THE HIGH ACCIDENT RISK POTENTIAL THE RUSTED BRAKE LINES HAVE CREATED. *TR