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Old 05-17-2020, 08:43 AM   #1
Junior Member
Join Date: Dec 2019
Posts: 3
Filling Water Tanks

I have a 2019 XLR 30 HDS.
Theres two drain lines and two vents so im assuming i have two connected water tanks.
When i go to fill i feel air comming out of both vents then the front vent starts to flow water like its full but the second tank is not filling.
Ive read about the syphoning problem with these and the fix most of them have but how can i be sure the second tank fills?
The gauge must be on the first tank because it shows full but i know its not taking the amount of water it should.
Any thoughts????

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Old 05-20-2020, 05:11 PM   #2
Join Date: Feb 2016
Posts: 42
I only have one water tank.

2016 Hyper Lite XLR 30HDS
2015 GMC Sierra Denali 3500, Duramax, DRW, 3:73
2016 Ram Laramie 3500, Cummins, DRW, 4:10
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Old 05-20-2020, 06:02 PM   #3
Just as confused as you
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Join Date: Aug 2013
Location: Wilderness CG, WI
Posts: 3,663
The hose waters flows from when full is the overfill. The other hose is the vent. You have only one fw tank
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tank, water, water tank

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