Power liftgate suddenly fell about 3 ft, hitting the back of my head. The liftgate then forcibly closed, pinning my hand. There was a recall for 2008-2012 vehicles to due faulty Stabilus struts that cause failure. This is a serious defect that has already caused numerous head injuries, fractured hands, neck pain, etc. This recall needs extended and consumers need to know of the possibility. Lastly, the warning mechanism that GM claims is the presence of flashing rear brake lights and a chime to warn when liftgate failure occurs only happens AFTER the gate fails, not before. The warning is of NO use. Another consumer posted an exact same complaint in July 2021 for an Acadia outside of the current recall dates.