my 2006 hyndaui sonata makes chunking sound under hood when driving and parked, no warning lights are on

Do you hear it when you are stopped at an idle?

yes and when driving

If you open the hood, can you tell aprox where it is coming from?

wifes car and Im not there she just says under hood

Start by checking belts to make sure there is nothing wrong with them. Also, check the water pump to make sure it isn't going bad. It is hard to tell without more information.