We just dewinterized our brand new 2013 267bhs. The dealer winterized ours before we brought it home last october. All my husband did was hook up the drinking water hose to the city water connection by the back outside shower and turned it on. We then went inside and slowly turned on the water faucet in the kitchen sink. First the cold then the hot. The hot ran longer because the tank needed to fill. Once the water run clear we moved on the the bathroom sink, repeated the same thing. Bathroom shower we ran water through the shower faucet and head. Flushed the toilet a few times and we are good to go. We didnt have to turn anything else on, or start anything up. Just flush and go. We even called our dealer and double checked. So now we have water in the gray and black water tank which we will dump at the campground when we go on our first trip in 2 weeks. Meanwhile we are backyard camping and using everything so we know it all works before we leave. Good luck!
camper: 2013 Jayco Jay flight swift 267 BHS
Tow vehicle: 2011 Dodge Ram 1500 crew
Leigh, Barb, Rich and Aj, the dog Sasha.