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Old 05-20-2018, 03:03 AM   #1
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Tow Vehicle suspension upgrades

So after towing my 12000# Fifth wheel for the 1st time it was apparent that I may need to upgrade suspension. Once the TT was hooked up, the bed was fairly level. While taking her home I didn't get that warm and fuzzy that everything was normal. Could be that this is my first ever fifth wheel. The Duramax had no issues getting up to speed, but it was a fairly bouncy ride.

My Tow vehicle is a 2015 Silverado 2500 Duramax High country, I was thinking of adding some Firestone airbags and upgrading the rear shocks. I'm interested in hearing what others have done and any suggestion for my situation.


TT is hooked up and all 2800# is on my truck;








TIA,
Mike
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Old 05-20-2018, 06:20 AM   #2
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Quote:
Originally Posted by mzodarg View Post
. While taking her home I didn't get that warm and fuzzy that everything was normal. Could be that this is my first ever fifth wheel. The Duramax had no issues getting up to speed, but it was a fairly bouncy ride.
You are probably several hundred pounds over the payload capacity of that truck ... What is the payload capacity of the truck?
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Old 05-20-2018, 06:21 AM   #3
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Iím a poor one to say this but you are overloaded. You are pulling a three axle trailer with a 2500 Silverado, you need a dually to pull that trailer and a long bed.
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Old 05-20-2018, 06:27 AM   #4
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The manufacturer lists that trailer at almost 13000 empty with a pin weight of over 2900 pounds. The manufacturer dry weights are generally way less than reality. I would suggest going to a CAT scale and figuring out your true weights for your truck and your truck and trailer together. Search the forum for msny posts on how to do this. You need to understand the gross axle weights and gross vehicle weight for your truck too. You will get lots of opinions on this but a tri-axle toy hauler is a lot for a 2500. Particularly a diesel with a high trim level. Your truck probably has less than 2300 pounds of payload (look at the yellow sticker inside the driver door jamb). I know none of this solves your immediate concerns but understanding weights is really important. FWIW I tow a fiver that weighs just under 12000 with a 2017 Silverado 3500 and it tows very well.
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Old 05-20-2018, 06:50 AM   #5
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That is one heavy trailer for a 3/4 ton truck. The high country options took away a lot of Payload. Later RJD
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Old 05-20-2018, 07:15 AM   #6
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Copied from GM Sight.

Year 2015, model:High Country, Engineuramax 6.6L Turbo-Diesel V8

Max Towing Capacity: 17,900 lbs
Max Payload: 3,501 lbs
Max Gross Vehicle Weight Rating (GVWR): 10,000 lbs

sticker in the glove box state max payload 1498 lbs looks like I need to start looking for a dually. I had no idea
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Old 05-20-2018, 07:22 AM   #7
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I don't do this often, but, I think you are up there with your weight, I'm towing a cedar creek 33IK and I use a Hensley BD3 air hitch and have no problem towing, I have exactly the same truck as you. It may be that you will be able to balance it out a bit as you go.
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Old 05-20-2018, 07:24 AM   #8
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I would look at the weights on your door sticker instead of the GM sight.
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Old 05-20-2018, 07:26 AM   #9
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I have a 2011 2500 Sierra with the allison trans and duramax diesel. I Checked with my dealer and the 2500 diesel is essentially the same as a 3500 except for the suspension. So any suspension enhancement will increase your payload. But as others pointed out find out how much you need then talk to your dealer
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Old 05-20-2018, 07:29 AM   #10
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Have loaded out the trailer for traveling yet? I know mine pulled a lot different coming home from the dealer but settled down after I got loaded out. A good set of airbags will take care of a lot of bounce. Don't let the naggers get ya down. Running a truck like that at close to max gvw is what it was built for. Too many people expect their truck to ride and handle just like it does empty vs. hitched up.
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