TSB: E-CVVT COVER AND MOTOR PLUG REPLACEMENT - This bulletin provides information about the replacement of the E-CVVT cover and motor plug on some 2016MY Optima (JF/JFa), produced from August 29, 2015 to June 14, 2016, 2017MY Sportage (QL) vehicles, produced from December 10, 2015 to June 15, 2016, and 2016-2017MY Sorento (UMa), produced from October 27, 2014 to June 14, 2016, which may exhibit a MIL ON with DTC P001000 and/or oil leakage in the E-CVVT motor plug of applicable vehicle models equipped with 2.4L GDI or 2.0 T-GDI engines.