I blow the lines. I start with all faucets closed and the drains open. Then I close the drains and blow it once with the faucet nearest the water connection open, then close that one and do it again with the next nearest faucet open, then the next, working my way away from the water connection. Have someone hold the shower head into the shower stall or you'll have water everywhere!
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10