THE LIFTGATE GAS STRUTS FOR THE SUBJECT VEHICLES MAY HAVE DAMAGED GAS SEALS THAT ALLOW THE LIFTGATE TO CLOSE UNEXPECTEDLY.AT THE COMPLETION OF A POWER-OPEN COMMAND, THE POWER LIFTGATE MAY EITHER CLOSE WITHOUT POWER ACTUATION (I.E., DESCEND UNASSISTED UNDER THE FORCE OF GRAVITY) OR AUTOMATICALLY POWER-CLOSE WITHOUT INPUT FROM THE OPERATOR.SOME OWNERS ARE CAUGHT UNAWARE OF THE UNINTENDED CLOSING OF THE LIFTGATE WHILE UNDER THE REAR LIFTGATE DOOR.THERE HAVE BEEN TEN REPORTED INJURIES RELATED TO THE ALLEGED PROBLEM ON THE SUBJECT VEHICLES.THIS INVESTIGATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS (EA08-015).