Engine questions-sputtering and slight jerking.?

It was more common on carburated vehicles but have you changed your fuel filter? I am not familiar with this power train but if the unit has a "M Airflow sensor" clean it with a spray designed for cleaning throttle bodies and such. Sometimes the hot wires get contaminated and skewer the reading given to the pcm which uses them to determine fuel trim tables causing a stumble. If equipped and after cleaning disconnect battery to clear adaptive tables in pcm.