G37S 2008 AT 2dr coupe

Hey guys. I've tried searching and couldn't find anything on engine coolant draining procedures. I have a copy of the FSM. I went under my car with the engine splash guard cover removed but haven't difficult locating the drain relief plug. All i can find underneath the radiator was two bolts that supports the radiator.

Can someone give me like a step by step instructions how to drain, clean, flush, remove the reservoir tank for the coolant, proper cleaning, etc?

Thanks!

Any help would be greatly appreciated.

 

Check in the DIY section.

 

Nothing listed. As mentioned before, I checked already and google.