2004 CADILLAC ESCALADE EXT Power Trainautomatic Transmission Problems

1ST INCIDENT 1) I WAS GOING TO PARK IN A SPOT BETWEEN TWO BUILDING, ONLY LARGE ENOUGH FOR ONE VEHICLE. I CAME DOWN THE ROAD, WHICH HAS A DECLINE TO IT, AND TURNED RIGHT, INTO THE PARKING SPOT. DUE TO THE ROAD BEING 1 WAY, AND THE PARKING SPOT BEING TIGHT, IT IS IMPOSSIBLE TO TURN THE VEHICLE DIRECTLY INTO THE PARKING SPOT. I TURNED THE VEHICLE AND HAD TO BACK UP TO GO STRAIGHT INTO THE PARKING SPOT. I PRESSED THE BRAKE, SHIFTED INTO REVERSE, AND PRESSED THE GAS PEDAL. MEANWHILE, A LADY WALKED IN FRONT OF MY VEHICLE ON THE SIDEWALK. 2) THE VEHICLE ROLLED FORWARD, EVEN THOUGH THE RPMS WERE AT APPROXIMATELY 2200 RPMS AND THE VEHICLE WAS IN REVERSE. I HIT THE BRAKE, BUT THE VEHICLE HAD ALREADY HIT THE LADY. SHE WAS FORTUNATELY FINE, AND CONTINUED ON HER WAY. 3) I TOOK THE VEHICLE TO...