NHTSA Complaint #11081025 — 2015 GMC TERRAIN

WHEN THE REAR POWERED LIFT GATE OPENED AND REACHED THE TOP POSITION, IT IMMEDIATELY REVERSES DIRECTION, RAPIDLY CLOSING APPROXIMATELY 30% DOWN, THEN REVERSES AGAIN AND RETURNED TO THE FULL OPEN POSITION, THEN REVERSED AGAIN AND CLOSED ALL OF THE WAY. THIS "HAMMER" ACTION HAPPENED AUTOMATICALLY. ALSO, ANY SAFETY CONTROLS TO PREVENT ENTRAPMENT OR PINCH WHEN THE LIFT GATE IS CLOSED NO LONGER WORKED. THE FIRST TIME THIS HAPPENED I WAS GOING TO PUT GROCERIES AWAY AND HAD BEGUN TO ENTER THE TRUNK WHILE THE REAR GATE WAS OPENING. THE LIFT GATE THEN SLAMMED DOWN ON MY HEAD (WHICH ALMOST KNOCKED ME OFF MY FEET AND ULTIMATELY CAUSED A BUMP) RAISED BACK UP AND THEN BEGAN LOWERING AGAIN. I ATTEMPTED TO PREVENT IT FROM CLOSING DOWN ON ME AGAIN BUT COULD NOT HOLD THE WEIGHT/FORCE FOR VERY LONG. AND WHEN I LET GO IT SLAMMED CLOSED. THERE IS A POTENTIAL FOR A SERIOUS HEAD/NECK INJURY FROM THE INITIAL UNCONTROLLED REVERSAL MOTION, NOT TO MENTION A CRUSH OR ENTRAPMENT HAZARD (ESPECIALLY TO CHILDREN) WHEN THE LIFT GATE FINALLY CLOSES. NOTE: I HAVE A VIDEO FILE AVAILABLE BUT IT IS TOO LARGE TO SEND PER THE UPLOAD LIMITS STATED BELOW.