2018 GMC ACADIA Seats Problems

My car seats (2nd row & 3rd row) seats are rattling really bad when I am on the freeway or highway roads; signs of loose seats. Very concerning to wear it loosens the seat belt strap securing my toddlers car seat. I thought it was the road but unfortunately it’s my seats.

THE SECOND ROW SEATS GET STUCK FROM TIME TO TIME WHEN ATTEMPTING TO FOLD THEM DOWN. WE HAVE ALSO BEEN HAVING ISSUES WITH THE SHIFT GEAR WHEN TRYING TO PLACE IT IN PARK. WHEN THE CAR IS PLACED IN PARK AND WE TRY TO TURN IT OFF, THE CAR WILL REFUSE TO SHUT OFF AND WILL DING UNTIL FINALLY THE CAR REGISTERS THAT THE SHIFT GEAR IS IN PARK. I HAVE TO TURN ON AND OFF THE CAR MULTIPLE TIMES, AND EVEN WIGGLE THE GEAR MULTIPLE TIMES BEFORE THE SYSTEM FINALLY RECOGNIZES THAT THE CAR IS IN PARK.

THE SERVICE STABILTRAK NOTIFCATION KEEPS COMING ON AND SHUTTING OFF ON ITS OWN WHILE IN MOTION ON A STREET AND IT HAS ALSO HAPPENED WHILE ON THE HIGHWAY. IT HAS OCCURRED AT DIFFERENT SPEEDS AND SEVERAL TIMES WITH DIFFERENT PEOPLE DRIVING.THE DEALERSHIP CAN'T FIGURE OUT WHY AND IT DOESN'T SHOW IT EVEN CAME ON AT ALL. WHEN IN MOTION ON A STRRET GOING 46MPH THE CAR TRIED TO AUTO CORRECT PULLING ME OUT OF MY LANE BY ITSLEF. IT WAS A STRAIGHT STREET WITH NO CURVES WHERE THIS OCCURRED. THANK GOD THERE WASNT A CAR IN THE LANE NEXT TO ME. THE SIDE MIRRORS RESET THEMSELVES ALL THE TIME. IF I MOVE THE SEAT AND THEN HIT THE MEMORY BUTTON SO IT WILL GO TO THE SET POSITION THE SEAT DOESN'T MOVE AT ALL. I HAVE HAD RENTAL CARS MORE THAN MY ACADIA THE PAST 2MONTHS WHILE THE DEALERSHIP TRYS...

FRONT SEATS FEEL LOOSE AND LIKE THEY SHIFT. WHEN THEY SHIFT AND MOVE A POPPING NOISE IS HEARD. THE SHIFTING AND POPPING NOISE HAPPENS IN AND OUT OF CORNERS, GOING OVER DRIVEWAY/PARKING LOT APRONS. THE SENSATION IS UNPLEASANT AND IRRITATING. HAVE SPOKEN TO DEALER AND AUTO BODY SHOP. ASSOCIATES CLAIM SIMILAR PROBLEM EXISTING WITH YUKON'S. DOES GMC HAVE A SEATING PROBLEM OR RECURRING DEFECT?

PASSENGER SEAT SITS LOW ON THE FLOOR WITH MY SHOULDERS UNDER THE WINDOW SHELF AND NOT ADJUSTABLE UP OR DOWN, THE SEATBELT IS ALSO NOT ADJUSTABLE AND HIT RIGHT UNDER MY CHIN. NO WAY OF GETTING AWAY FROM BEING INJURED OR DECAPITATED IN A CRASH. IM 5'5"