TL* THE CONTACT OWNS A 2012 GMC ACADIA. THE CONTACT STATED THAT THE LIFT GATE SECURE SYSTEM FAILED CAUSING THE LIFT GATE TO RELEASE HITTING THE CONTACTS HEAD. MEDICAL ATTENTION WAS NOT REQUIRED. THE DEALER INFORMED THE CONTACT THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 15V415000 (STRUCTURE). THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE AND THE VIN WERE NOT AVAILABLE.