Grey Tank won't drain, doesn't fill.
My bathroom grey tank on my 2012 Surveyor TT 301 does not drain. It also always shows empty. My sink and shower do not back up but will occasionally run slow. Took the dump valve off today and no w...
Forum Discussion
Harvard wrote:
Some, if not a lot of bathroom sinks are plumbed into the black tank.
This is where I'd put my money.
