jetchill
New Member
When I connect hose to black tank flush port, water starts leaking from rear of trailer. Grand Design Tech says it check valve. Problem is they don't know where it is at and can't tell me how to get to it.
I looked behind shower faucets, under shower stall and under sink. Cutting into wall is next suggestion from GD Tech and he is guessing. Anybody experience this problem ?
I looked behind shower faucets, under shower stall and under sink. Cutting into wall is next suggestion from GD Tech and he is guessing. Anybody experience this problem ?