How deep can I ford? - Chevy and GMC Duramax Diesel Forum
2017+ L5P Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 13 (permalink) Old 09-19-2019, 11:31 AM Thread Starter
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How deep can I ford?

i've got a stock SRW '19 Denali with 20" wheels and I'm watching the Houston flooding. Anyone have an idea how deep I could ford without drowning out?

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post #2 of 13 (permalink) Old 09-19-2019, 11:52 AM
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Originally Posted by wensteph View Post
i've got a stock SRW '19 Denali with 20" wheels and I'm watching the Houston flooding. Anyone have an idea how deep I could ford without drowning out?
last guy to push it in a flood hydrolocked his engine. Probably best to avoid driving at all unless necessary. Its less about how deep the water is as you drive though and more about water sloshing over your truck from other vehicles. based on the photos im seeing of Huston i would not leave my driveway.
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post #3 of 13 (permalink) Old 09-19-2019, 12:36 PM
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i agree with what j83 said, its more so the waves your going to catch from other cars trying to play boats, everything should be sealed but once you get water into the intake your a dead duck
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post #4 of 13 (permalink) Old 09-19-2019, 01:26 PM Thread Starter
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I'm in Savannah, I was just curious.

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post #5 of 13 (permalink) Old 09-19-2019, 04:40 PM
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Get a Ford & try it.

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post #6 of 13 (permalink) Old 09-20-2019, 03:21 AM
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General rule of thumb for current gm trucks is 20 inches at 5mph, 12 inches at 10mph.
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post #7 of 13 (permalink) Old 09-20-2019, 03:26 AM
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Turn Around, Don't Drown


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post #8 of 13 (permalink) Old 09-20-2019, 11:27 AM
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Personally on my 2012, I'd limit it to no more than 12" of still water, not running water. But with your 2019 Denali, I'm thinking you're good for 3, maybe 4 feet. Dive in and let us know how it goes. I want video. Oh, and your repair bill, too. Or how much it costs you to trade, whatever you decide to do.
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post #9 of 13 (permalink) Old 09-20-2019, 08:34 PM
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It's kind of a moot point. Here's a picture taken on the Bush International Airport access road.
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Last edited by henry42; 09-20-2019 at 08:38 PM.
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post #10 of 13 (permalink) Old 09-21-2019, 09:03 AM
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I live south of Houston. Simple.. don’t do it. You never know just how deep it is or how fast it’s flowing.

With that said, if push came to shove and I had to I think about mid-wheel would be the max as slow speed. As was said, it’s the other guys “wake” that messes you up.

Even though I know my street, after Harvey, I let the Duce and a half do the work in the water. Truck never left the garage.

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