How do I preform a coolant flush? on 2002 Chevrolet Malibu

I'm DYI-ing a coolant flush, just need some help per this specific car, I get how to do it, just need help looking for the right things, ie the lower drain.

Asked by for the 2002 Chevrolet Malibu
Keep in mind, not all radiators have a lower pet cock( drain ) at the bottom. If no petcock, drain it out the lower radiator hose. Goodluck