black tank slow and not complete draining

[woody50000]

I have a 2010 Avalanche. The black tank refuses to empty all the way out. I have a clear elbow that hooks to tank outlet. When it first starts to empty with the tank full it just trickels water, then a few solids,back to water trickel until I get impatient and shut it off. We make sure and have lots of water in it before we dump. This trailer was bought last fall so it has not been out very many times. It has been to shop for this and they said it had a plug in it from manufacturing. Still does it. I guess my question is anyone with a newer Avalanche have this probem. Thanks,woody

[travelbugger]

Have you tried flushing your toilet with a hose? If you dont have a back flusher just spray down the toilet. I think you just have build up somewhere.
It's good to flush every few dumps to make sure everything comes out. Unless your traveling, you could do it every time.
And after you empty your tank- its a good idea to put a few gallons of water in before using it.
Let me know if that helps at all. Btw, are you using RV toilet paper?

[hankaye]

woody50000, Howdy;

If one of the "tech's" Said you have a plug in there from the Manu'fter, he's probably refering to when thy cut the holes for the drain,vent, and inlet.
those pieces of plastic WILL plug your drain. Should have been removed before the tank was installed. Only way to get them out is take the tank out of your system (dismount it from the trailer), then shake it till they show at the hole , then grab each and pull it out.
Now I am in NO WAY connected to these folks in any way shape or form...

http://www.allprowaterflow.com/

They do a pressure wash and remote television inspect of your tanks(s).

They do alot of work for dealers so there may be one of his franchisiees near by.

Or ... if ya just have a large mound of "stuff" lodged near the outlet ...
your call.

hankaye