Backed up Galley sink
I am having issues with the galley sink in my toy hauler draining. I'm new to the camping scene and I purchased my trailer second hand. I initially thought it had a blockage or restriction but on my cluster that indicates the level in my Grey and Black tanks there is an indicator for the galley which is showing full. I would assume that the Grey water from the galley as well as the shower and bathroom sick would all go to the same tank. I searched for possibly another valve to switch for the galley grey water to drain but I've been unsuccessful in doing so. Any help would be greatly appreciated. My trailer is a Cross Terrain by Cross Roads.
Thanks again, Roland