2009 coachmen chapparal 340qbs

[Audcar]

I have 2 grey water tanks. I have tried draining tank 2 not sure what connects to it. I have done a few things to try and unclog it without having to take the underbelly off. So far using a hose to push water in from the drain line has helped some but not enough. My Guage says 2/3 full. Not sure if it's a stuck valve not opening all the way or clogged with something. Any suggestions?

[markb5900]

It’s very possible the gauge is just wrong. Anything stuck on the sensor will make it read incorrectly.
For the grey, that’s all your sinks and probably the shower. I would figure out what actually fills that tank and run a bunch of water in it and see how long it takes to go to full. If quickly, the tank really is blocked, if it takes quite awhile your gauge is just reading incorrectly.

[Audcar]

Ok. I was thinking on doing that I know the shower and sink next to shower is to grey tank 1. I'm thinking kitchen sink and 1/2 bath sink is connected to tank 2. Will definitely try tomorrow.