RE: 2016 CHEVROLET TRAVERSE WITH 56,000 MILES FEB. 2, 2021, I WAS RETURNING HOME FROM RUNNING ERRANDS , PULLED INTO THE DRIVEWAY AND PER MY NORMAL ROUTINE, ROLLED JUST PAST THE GARAGE DOOR OPENING IN ORDER TO BACK INTO THE GARAGE. WHEN I APPLIED THE BRAKE, THE CAR ACCELERATED INDEPENDENTLY TO FULL THROTTLE AND JUMPED ABOUT 10 OR 12 FEET, SIDESWIPED A TREE AT THE CURVE IN THE DRIVE AND TOOK OUT A 4X4 POST HOLDING MY BIRDFEEDER. I CONTINUED APPLYING THE BRAKE BUT COULD NOT STOP THE CAR. BY STEERING, I WAS ABLE TO MISS ANOTHER TREE AND DROVE INTO THE BACK YARD. THE CAR WAS HEADED TOWARD THE BARN ABOUT 50 YARDS AWAY, BUT I WAS ABLE TO GET THE TRANSMISSION INTO PARK. THE AIR BAGS DID NOT DEPLOY WHEN I HIT THE TREE, AND I WAS NOT INJURED. AS THIS WAS ON PRIVATE PROPERTY WITH NO DAMAGE EXCEPT TO THE CAR, A POLICE REPORT WAS NOT FILED. DID $12,000+ IN DAMAGES PLUS 4 WKS TO FIX. THE CHEVY DEALER FROM WHOM THE CAR WAS PURCHASED SAID THEY WOULD HAVE SOMEONE FROM GM TO RUN A DIAGNOSTIC. THAT WAS 2 WKS AGO AND THEY STILL HAVE MY CAR BUT HAVE DONE NOTHING AS OF YET.