Hi
I know this is an old post but….
I was experiencing slow drain from the shower. It was draining so slow that you would have quite a bit of water standing when you finished your shower.
I removed the “Bladder” housing. This was accomplished without the use of tools.
The drain and bladder were full of gunk. I washed it all out and the drain now works. I filled the shower tub with a fair amount of water then pulled the drain plug and it drained very well. This also checked the drain for leaks.
FYI here are pictures of the bladder.
http://www.sallyscoffees.com/montana-shower-drain/
Phil P
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2009 Montana 3665RE
2009 Duramax 3500 DRW quad cab
personal web page https://
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