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  1. #1
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    Where are the tanks located on the 21G?

    Hi. Could anyone who owns a 21G toy hauler let me know where the freshwater, grey and black tanks are located such as in front of axle, etc. If I'm not mistaken there are 2 grey tanks right?

    Thanks
    Steve

  2. #2
    Site Team Second Chance's Avatar
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    I'm not intimately familiar with your model, but GD typically locates the fresh tank near or over the axles (often over the rear axle). The black and gray tanks are arranged forward of the axles depending on space in the underbelly. If you have two gray pull handles, you have two gray tanks. You can call GD Customer Service and ask... though they are harder to get through to these days.

    Rob
    U.S. Army Retired
    2012 F350 DRW CC LB Lariat PS 6.7
    2020 Solitude 310GK-R, MORryde IS, disc brakes,
    Sailun LRG tires, solar, DP windows, W/D
    (Previously in a Reflection 337RLS)
    Full time since 08/2015

  3. #3
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    Thanks Rob.

  4. #4
    Site Sponsor TerryH's Avatar
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    Looking at the floor plan and listed capacities, there should be 2 gray tanks and 1 black. The black tank is almost certainly right beneath the toilet. Not sure of the exact locations of the grays but likely under the shower and bath sink and very near the kitchen sink. The 2 fresh tanks are connected and both should have large white PVC dumps attached directly to them that will be exposed under the trailer.

    This is the layout on our 31G. I don't have it for the 21G but the principles and general locations will be similar.

    Last edited by TerryH; 09-24-2021 at 09:02 AM.
    2021 Momentum 31G
    2021 20' Haulmark Edge race trailer
    '17 Ram CCLB 3500 dually 6.7 turbo
    '96 Chevy C3500 CC dually 454
    2019 Honda Talon X
    1985 Honda FL350R Odyssey

  5. #5
    Left The Driveway
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    thanks Terry

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