TSB: ECM UPGRADE - CYLINDER CONTRIBUTION/BALANCE - THIS BULLETIN PROVIDES INFORMATION RELATED TO THE ECM SOFTWARE UPGRADE FOR SOME 2012-2013 MY SORENTO(XM) AND 2012 MY SEDONA(VQ) VEHICLES WHICH MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP ILLUMINATED (MIL) WITH THE ECM (ELECTRONIC CONTROL MODULE) SYSTEM-RELATED CYLINDER CONTRIBUTION/BALANCE DTC(S), (P0263, P0266, P0269, P0272, P0275, P0278).
