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Old 09-06-2021, 09:20 PM   #41
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2019 28' International
Trinity , Florida
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BTW, gm stopped production of the 3.0 diesel for the remainder of the year.
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Old 09-06-2021, 09:21 PM   #42
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2017 19' Flying Cloud
Calgary , Alberta
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Quote:
Originally Posted by nvestysly View Post
Here's a link to the article and video of the Ike Gauntlet Challenge performed by The Fast Lane Truck:

https://www.tfltruck.com/2019/11/202...re-ever-video/

They lament the poor performance of the exhaust brake on the downhill section - even in tow/haul mode. I suspect you could obtain better performance of the exhaust brake by manually downshifting the transmission.

Here's the YouTube video of the test:

Iíve seen this video before and their experience is completely different from mine. I own a 2021 GMC Sierra 1500 with the 3.0L. On mine, in tow haul mode, the exhaust break and grade shifting work very well.
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Old 09-07-2021, 12:15 PM   #43
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Dayton , OH, 2017 33' Classic 8,561 dry
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I donít own the 3.0 Duramax but that article seemed off to me. With an aftermarket tune my 3.0 diesel will hold to a 6 percent grade up to 6,000 pounds without using the TBC or the truck brakes.

With a proper sized WDH and axle to frame air bags a half ton should be able to handle up to 1,150 pounds of tongue weight for this example nothing in the bed according to the Mfgrs and by SAE j2907. In practice I have found this to be true assuming you used your WDH and loading to adjust your axles & tongue weight to optimum or at least within maximum spec. If you fail to adjust it to get the weight back on the steer axle lol all bets are off.
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Old 09-07-2021, 03:35 PM   #44
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2018 26' Flying Cloud
Morrisville , North Carolina
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Chevy 1500 Inline six diesel. Do you have one?

I have the Chevy Silverado with the 3.0 diesel and it pulls my 26 FC with ease while getting 16 mpg from Raleigh NC to the SC coast. It is a great combination. Love it!
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Old 09-07-2021, 03:50 PM   #45
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2018 25' Flying Cloud
Provo , Utah
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I have the duramax and absolutely love it. It gets great fuel mileage, has plenty of torque to tow our 25 FBT and so far (knock on wood), I haven't had any problems with it.


I tend to get 16 MPG or so towing our 25 FBT up and down the hills.
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