This bulletin provides the procedure to identify the correct transmission part number for 2013~14 Sonata (YFa) 2.4L by referring to the Serial Code. Some transmissions installed during the transition from 2013 to 2014 model years may be mixed from 8/20/2013 to 10/17/2013. NOTE: An incorrect transmission part number may cause a 2-3 shift flare.
