No that would be draining points for sure
You need to get to the actual pump and close the valves in other to prevent the antifreeze from going into your fresh water tank (and allowing suction from your antifreeze bottle)
Also don,t forget to bypass you hot water heater..unless you want to change it!
2014 JayFlight 28BHBE (replacing a 2009 Kodiak 25QS)
2011 Sierra SLT CrewCab 4x4
1200/12,000 Equal-I-Zer Hitch