2012 GMC TERRAIN Structure Problems

ON 8/2/12 I PURCHASED MY GMC TERRAIN BRAND NEW IN ASHLAND CITY, TN. I MOVED TO WEST PALM BEACH IN OCTOBER 2012. THE CURRENT MILES ON THE VEHICLE ARE 44,039. I GOT AN OIL CHANGE, FILTER AND MULTI-POINT INSPECTION ON 10/24/13 BY THE LOCAL GMC DEALER. ON 10/23/13 I TOOK MY VEHICLE IN TO HAVE A RECALL REPAIRED AT SCHUMACHER BUICK/GMC. THE RECALL # IS 12312. A MONTH LATER THE VEHICLE WOULD LUNGE SHARPLY FORWARD WHILE DRIVING AND A HEAVY SHAKING VIBRATION (BOTH WHILE DRIVING AND AT A STOP) BELOW MY FEET IN THE VEHICLE (FLOOR BOARD). I TOOK THE VEHICLE TO SCHUMACHER BUICK/GMC 3031 OKEECHOBEE BLVD, ON 11/11/13 AND IT REMAINED UNTIL 11/15/14 AND THE PROBLEM WAS NOT IDENTIFIED. I RETURNED THE VEHICLE FOR THE SAME PROBLEM ON 12/21/13 (SAME DEALER) AND IT WAS PICKED UP ON 12/31/13. THE FIRST SERVICE ADVISOR WAS ROB DEAL HE TOLD ME THAT...

THE DATA I ENTERED FOR "FAILURE MILEAGE" AND "SPEED AT TIME OF INCIDENT" SHOULD NOT BE USED AS CONCRETE DATA BECAUSE FOR THE MOST PART FROM ROLLING UP VERY SLOW DRIVING WOULD BE MORE ACCURATE (WITHOUT GIVING GAS). I AM 47, AND DRIVING SINCE 18. I AM A MECHANIC, WORKED TELEPHONE, DATA, PRESENTLY A NURSE. I HAVE DRIVEN MANY CARS. I HAVE OWNED, OR CO-OWNED A LEAST 15 CARS. I AM ALWAYS ON THE ROAD IN ALL CONDITIONS. ALL MY PAST PROFESSIONS REQUIRED PLENTY DRIVING. I HAVE DRIVEN THE ABOVE MENTIONED VEHICLE FOR LITTLE OVER 2 MONTHS. THERE IS A SIGNIFICANT BLIND SPOT TO THE FRONT RIGHT- WHERE THE FRONT MIRROR JOIN THE FRONT RIGHT DOOR STRUCTURE. TO TURN RIGHT FROM A STOP SIGN, OR A STOP LIGHT, IS DANGEROUS. THE VERTICAL SHAFT (RIGHT SIDE EDGE OF THE WIND-SHIELD VIEWED FROM DRIVERS SEAT) COUPLED WITH THE LARGE MIRROR MAKE FOR...