TSB: TCM UPGRADE – SHIFT LOGIC IMPROVEMENT - THIS BULLETIN PROVIDES INFORMATION RELATED TO A TCM (TRANSMISSION CONTROL MODULE) SOFTWARE UPGRADE FOR SOME 2014~2015MY CADENZA (VG) VEHICLES, PRODUCED FROM FEBRUARY 11, 2013 THROUGH JULY 11, 2014 AND FROM JULY 14, 2014 THROUGH DECEMBER 12, 2014, TO IMPROVE A TRANSMISSION SHIFT CONCERN THAT MAY BE DESCRIBED AS “HUNTING” AND/OR BUSY SHIFT. TO RESOLVE THE CONCERN, REPROGRAM THE TCM/PCM USING THE GDS/KDS DOWNLOAD AS DESCRIBED IN THIS BULLETIN. FOR CONFIRMATION THAT THE LATEST REFLASH HAS BEEN PERFORMED, VERIFY ROM ID USING THE TABLES IN THIS TSB.
