ON MARCH 21, 2019 I WAS IN AN AUTOMOBILE ACCIDENT DUE TO BRAKE ISSUES. I WAS AT A RED LIGHT IN THE LEFT TURN LANE AROUND THE CORNER FROM MY HOUSE. THERE WERE 3 OR 4 CARS IN FRONT OF ME TO TURN LEFT. LIGHT TURNED GREEN, EVERYONE PROCEEDED. THE CAR IN FRONT OF ME PASSED THE CROSS WALK AT THE INTERSECTION, SHE SLAMMED ON HER BRAKES AND DECIDED NOT TO PROCEED. I SAW HER MAKING A SUDDEN STOP, I STEPPED ON THE BRAKE. SINCE WE WEREN'T GOING VERY FAST, MY EXPECTATION WAS FOR MY CAR TO STOP. I FOUND THAT THE BRAKE PEDAL SEEMED TO BE MORE DIFFICULT TO PUSH. INSTEAD THE HARDER I PRESSED ON THE BRAKE THE MORE I REALIZED I WAS ABOUT TO HIT THE CAR IN FRONT OF ME. AT THAT POINT I FELT LIKE I HAD TO SLAM ON MY BRAKES. THINGS WERE HAPPENING SO FAST. AFTER MY VEHICLE BUMPED THE CAR IN FRONT OF ME, I ASKED THE GIRL TO PULL OFF THE ROAD SO WE WOULDN'T BLOCK TRAFFIC. I CALLED THE POLICE TO COME OUT TO TAKE A REPORT. SHE STATED THAT HER VEHICLE ALREADY HAD A HOLE IN THE BUMPER SO MY VEHICLE DIDN'T DO MUCH DAMAGE TO HER CAR. WE BOTH HAD OUR VEHICLES REPAIRED. SOMETIME IN EARLY TO MID MAY I RECEIVED A GENERIC LETTER FROM GM (DATED APRIL 2019) DISCUSSING THE FACT THAT THERE MAY BE A CONDITION WITH THE 2017 SUBURBAN MAY HAVE A CONDITION WHERE CUSTOMERS MAY EXPERIENCED INCREASED BRAKE PEDAL EFFORT. I CONTACT GM AFTER STUDYING UP ON THIS ISSUE AND FILED A COMPLAINT. I RECD A CASE #. SOMETIME LATER HE CONTACTED ME SAYING MY CASE HAD BEEN MOVED TO ANOTHER AREA. NEVER HEARD FROM ANYONE C