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11-01-2023, 07:13 PM #1
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Water Leaking from Underbely after Black Tank Flush GD 297rsts
We are fairly new to owning a travel trailer and we have a 2023 GD 297rsts. This weekend we were packing up to go home from a trip and we flushed our black tank. Once we hooked the trailer to the truck and took the trailer off the leveling blocks we noticed clear water pouring out from underbelly of trailer, where the grey and black pull handle lines enter the underbelly. Does anyone know the cause of this water accumulation? Thanks in advance......
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11-01-2023, 08:36 PM #2
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You certainly need to figure this one out. Does your water pump come on for no apparent reason?
2023 Reflection 297RSTS
2020 F-250 Power Stroke
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11-01-2023, 09:00 PM #3
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No, the water pump does not come on. The trailer came to us "new" with mislabeled pull levers (black was grey, grey was black, etc) and miscalibrated sensors on the tanks. We recently took it in to the dealer to get all that straightened out, and this was our first trip since that work was done. I'm wondering if they didn't screw something back in correctly or some sort of seal is broken. It is still under warranty, so guess we'll be taking it back to dealership.
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11-01-2023, 09:24 PM #4
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One possibility is the vacuum breaker on the black tank flush has failed and allowed water to run inside the trailer. Did you happen to notice if there was a solid strong flow of water while the black tank flush was running? The vacuum breaker is usually plastic and is a known failure point, and not just on Grand Design trailers.
Howard and Peggy
2019 Momentum 351M, and 2018 RAM Cummins dually 6-speed.
His: 1999 Honda Interceptor
Hers: 2013 Spyder ST-S
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11-01-2023, 09:25 PM #5
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We just traded for a 297RSTS. Picking it for a shake out camp on Tuesday.
2023 Reflection 297RSTS
2020 F-250 Power Stroke
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11-02-2023, 03:00 AM #6
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It could be from anywhere
I would try to duplicate the situation at home and see what you find
Dropping the covering underneath isn’t that hard and will likely show the issue
From most posts on here it could be months before your dealer looks at it. Maybe your dealer is different
Good luck2021 Imagine 2400 BH
2018 GMC Sierra 4x4 Crew 1840lb payload
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11-02-2023, 03:31 AM #7
I'm curious how the dealer calibrated the tank sensors. They are essentially probes that get installed in the tank by drilling a hole in the tank and then placing the sensor in each hole. If they relocated the sensors, they would have had to fill the hole with something, if not done properly or didn't cure enough before use, it could be a leak point. As far as I know, there is no calibration of the sensor unless it was incorrectly wired from the factory.
2023 Momentum 398M-R
2023 Ford F-450
SOLD - 2021 Reflection 311BHS
SOLD - 2017 Momentum 399TH
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11-02-2023, 04:36 AM #8
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11-02-2023, 04:40 AM #9
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2018 Dodge 3500 6.7 Cummins SRW w/Aisin
2021 Reflection 303RLS
New to RV'ing since 1997
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11-02-2023, 07:40 AM #10
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