I've just started planning for winterizing and I looked in the battery compartment. Behind the water heater on my Vibe are all the valves needed to bypass the water heater to allow for flushing. The top left valve will shut off flow FROM the tank (Red pipe). The valve connecting Hot and cold lines in the middle will allow flow from cold line to hot line. The bottom right valve cuts of cold water coming into the tank.
I was glad to see that this was already installed and no setup needed.
The pump sits right behind my battery box and to the right of the water heater.
I'm still debating whether to blow out the lines or fill with RV anti-freeze.
Which ever way you go, don't forget regardless to pour antifreeze into the sinks and shower drains to keep P traps from freezing.
2014 VCross Vibe 6504
2013 Nissan Frontier 4x4 V6 4.0L