BRAKE FAILURE ON A 2 DAY OLD CHEVY TRAVERSE SEQUENCE OF EVENTS . . . 1.I PURCHASED A CHEVROLET TRAVERSE FROM LAWRENCE CHEVROLET ON TUESDAY, JANUARY 14, 2020 AND TOOK DELIVERY AT ABOUT 5:00PM. 2.WHILE MY WIFE WAS DRIVING ON THURSDAY, JANUARY 16, 2020, WE EXPERIENCED A LOW SPEED BRAKE FAILURE. THIS OCCURRED WHILE ON THE WAY TO DULLES AIRPORT AT ABOUT 6:00PM. THE BRAKES WERE SLOWLY APPLIED AND THEY DID NOT RESPOND. THE BRAKES WERE THEN PRESSED HARD AND THEY DID NOT RESPOND. I (MIKE) REACHED OVER TO TRY SHIFTING THE CAR INTO PARK BUT WAS UNSUCCESSFUL AND THE CAR DRIFTED AT A VERY LOW SPEED, 'A WALKING SPEED,' AND INTO THE BACK OF A TRACTOR TRAILER. WE HAD VERY AMPLE SPACE TO STOP HOWEVER THE BRAKES SIMPLY DID NOT RESPOND. MINIMAL DAMAGE OCCURRED TO THE VEHICLE'S FRONT. I IMMEDIATELY CHECKED TO SEE IF SOMETHING WAS IN THE WAY OF THE BRAKES PEDAL (A FLOOR MAT OR OTHER OBSTRUCTION) AND THERE WAS NO OBSTRUCTION. I COULD SEE, AND I AM CERTAIN, THAT HEATHER HAD HER FOOT ON THE BRAKE PEDAL. 3.GLENDA (ONSTAR/GM) ESTABLISHED CASE NUMBER 9-5760767809 AND SET UP A TOW TO OURISMAN CHEVROLET OF ROCKVILLE, MD. 4.I WAS GREETED BY ROBERTO (SERVICE MANAGER?) AND HELPED BY BOTH ROBERTO AND ALLEN KRUM (ASSISTANT SERVICE MANAGER). THEY ALSO TOOK DOWN A DESCRIPTION OF THE INCIDENT AND THEY GAVE ME A RENTAL CAR. OF NOTE, THEY SAID THAT SOMEONE OUTSIDE OF THE DEALERSHIP (A GM REP?) WOULD BE COMING TO LOOK OVER THE CAR.