Our first time out in our Beautiful Beast and the shower was collecting water. It's not the worst problem and it does drain eventually. We stopped at our dealer on the way home. Tech says there is no access that he knows of. He attempted to flush with a hose to no avail. We were told they will have to drop the tanks in order to access the Waterless Valve.

Is this true GD tech?

It pains me to think our BB doesn't have an easier fix.

Help!

Alison and Dave
Georgia, VT
2015 Solitude 379FL
2013 GMC 3500HD SRW CC 6.6 Duramax