THE HATCH BACK DOOR THAT LEFTS UP BY A TOUCH OF A BUTTON CAME CRASHING DOWN ON MY HEAD WHILE PUTTING IN THE GROCERIES. THE NEXT TIME IT CAME DOWN ON MY FINGERS. ALSO CAME DOWN ON MY DAUGHTERS BACK. ALL THE TIME WITHOUT WARNING. IT LEFTS UP JUST FINE BUT IT COMES CRASHING DOWN AT ANY TIME. I TOOK IT TO GMC DEALERSHIP AND THEY REPORTED THAT THE OIL WAS LIKING FROM THE LEFT SIDE TERRAIN LIFT GATE TAILGATE HATCH-ACTUATOR 23432304. PART NUMBER 23432304 FOR 2013 GMC TERRAIN. THIS COULD SERIOUSLY HURT SOMEONE. I HAVE TURN MINE TO OFF AND HAVE TO LIFT IT MANUALLY. NO FUN. IT'S HEAVY.