PACCAR Inc. is recalling certain model year 2013-2014 Kenworth T680 chassis manufactured January 1, 2012, through October 14, 2013, and Peterbilt 567 and 579 chassis manufactured January 20, 2012, through October 11, 2013, and equipped with Inteva-brand door latch assemblies. In the affected vehicles, the doors may lock permanently while closed or may be opened from the outside even after they have been locked.