Radiator flush procedure 2002 v-6

It's time to do a flush on my radiator but I'm not sure how to do it on this type of system. The pressure cap is on the overflow bottle. Does anyone know of a link to the procedure or how to do it?

On these V6 engines I'd not recommend any flushing due to the gasket problems that can crop up. Just drain the old coolant from the radiator and remove the block drain plugs as possible and refill with a 50/50 mix of new coolant. The newer coolant really does a good job and stays very clean anyway and just refreshing the antifreeze is all you need. That's jusy my opinion here under the shade tree of course.

What I would do.. is drain the exsisting fluids.. run it through with water until all the coolant is out..
then fill with 50% dexacool and 50% water