( http://www.TFLcar.com ) The 2013 GMC Acadia debuts at the 2012 Chicago Auto Show with a new nose, revised/softened sheet metal and a redesigned rear end. An industry first center airbag is new as is the Side Blind Zone Alert with Rear Cross Traffic Alert systems. New wheels, a standard rearview camera and a softer, more sophisticated interior are part of the redesign as well.