I'd also put in a bottle of Chevron with Techron fuel system treatment at your next gas fill-up. Also, if you haven't already done so, a drain-fill of the transmission fluid and maybe even a drain-fill of the coolant.oil change, engine air filter change, fluid check, spark plug/wire replacement (if you have coils then only the spark plugs)
I wouldn't drain the trans though. from experience in a Hyundai dealership, these things are really finicky with having the trans fluid changed. in a lot of cases, its better to leave it as is or you can end up having more issues to repairI've done all of the above except I need to change wires/plugs. It's idling a little rough.