NHTSA Complaint #10924155 — 2016 GMC SIERRA 1500

I PURCHASED MY 2016 GMC SIERRA SLE DOUBLE CAB ON 9/13/2016. MY TRUCK BEGINS TO VIBRATE/SHAKE AT 40 MPH AND GETS PROGRESSIVELY WORSE TO 70 MPH. THE SHAKE CAN BE FELT IN THE DRIVERS SEAT AND FLOOR. THE CENTER CONSOLE SHAKES AND SHUDDERS MAKING ME FEEL NAUSEOUS AND DIZZY WHILE DRIVING AT HWY SPEEDS. I RETURNED THE TRUCK TO THE DEALER WITHIN THE FIRST 500 MILES. THE WHEELS AND TIRES WHERE FORCED BALANCED WITH NO RELIEF AND THEN ALL FOUR TIRES WERE REPLACED. THE WHEELS AND TIRES I PURCHASED WITH THE VEHICLE WERE A DEALER ADD OF GM 22" WHEELS AND TIRES. THE VIBRATION WAS NOT AS APPARENT AFTER THE NEW TIRES WERE PUT ON BUT NOW THAT I HAVE PUT AN ADDITIONAL 1700 MILES ON THE TRUCK, THE VIBRATION AND SHAKE IS BACK AS ORIGINALLY REPORTED. DURING A 3 HOUR ROAD TRIP ON 11/2/2016 I HAD TO STOP AND LET MY PASSENGER CONTINUE THE TRIP BECAUSE I WAS ILL FROM THE SHAKING AND VIBRATIONS. MY SALES PERSON INITIALLY TOLD ME THAT WHAT I WAS EXPERIENCING WAS HOW 22" WHEELS FEEL. I HAD A 2012 SILVERADO LT Z71 AND A 2014 SILVERADO LT THAT HAD LARGE WHEELS AND I DID NOT HAVE. ANY SHAKING OR VIBRATIONS. I HAVE MADE ANOTHER APPOINTMENT WITH ANOTHER DEALER TO SEEK RELIEF. *TR