NHTSA Closes 3 Chrysler Defect Investigations By Stephen Elmer Dec 29 2014 Share this Article Tweet The National Highway Traffic Safety Administration has closed three Chrysler defect investigations which all resulted in recalls. Continue Reading... Filed under: American Car Recalls Dodge Featured Articles SafetyTags: Chrysler recalls, NHTSA Chrysler, NHTSA Chrysler Investigations, NHTSA investigations