TL* THE CONTACT OWNS A 2009 GMC ACADIA. THE CONTACT STATED THAT THE POWER LIFTGATE WAS ENAGGED AND PLACED IN AN UPWARD POSITION WHEN IT ABRUPTLY CLOSED ONTO THE CONTACT'S HEAD. THE CONTACT SUSTAINED A BUMP ON THE HEAD THAT RESULTED IN MINOR HEADACHES. THERE WAS NO MEDICAL ATTENTION REQUIRED. THE VIN WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 15V415000 (STRUCTURE) HOWEVER, THE PART NEEDED TO PERFORM THE REPAIR WAS UNAVAILABLE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 142,000. THE VIN WAS UNAVAILABLE.