Towing calculations - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Speciality Forums > Towing
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Advertise

Towing Discuss Anything Related To Towing With Your Diesel. Any RV-specific discussions belong here.

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Like Tree18Likes

Reply
 
LinkBack Thread Tools
Old 10-24-2015, 08:29 PM   #1 (permalink)
CAN_Yeager
Block Heater
 
Join Date: Oct 2015
Posts: 15
iTrader Score: 0 reviews

Towing calculations

I have a 2004 GMC Sierra 2500HD 4x4 crew cab short box with a 6.6L I am looking at new trailer so and I need to know the capacity of my truck. I made the following chart based on specs and actual weights measured.

Please look at it and add your two cents. Some "advice" I have been given would suggest I can haul a trailer twice as heavy as my truck, that can't be right.

Attached Images
File Type: jpg image.jpg (64.0 KB, 12 views)
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-24-2015, 09:37 PM   #2 (permalink)
TiredFarmer
Gone but not forgotten member
 
TiredFarmer's Avatar
 
Join Date: Jun 2013
Location: Waynesboro, Tennessee
Posts: 3,455
iTrader Score: 0 reviews

Regardless of what you get, the pin weight of fifth wheel will up the weight on rear axle. You'll want something with a loaded pin weight of 1800 ballpark.

__________________
2008 Silverado K3500HD dually CCLB (LMM)
2005 Silverado K2500HD ECLB LT (LLY) (SOLD)
2003 Silverado 2500HD ECSB 6.0l/4L80e
2000 Pontiac Grand Am GT
Member #1063 3500 Dually Club
Offline   Reply With Quote Quick reply to this message
Old 10-24-2015, 10:37 PM   #3 (permalink)
IGO1320
Diesel Superstar
 
IGO1320's Avatar
 
Join Date: Sep 2007
Location: Apopka Florida
Posts: 3,587
iTrader Score: 0 reviews

These trucks will Legally haul quite a bit more as long as the tires are rated appropriately. Check this thread for some of the trailer's I have towed across the country thru the Rockies. https://www.dieselplace.com/forum/76-...-tow-haul.html
__________________
2006 2500HD CCSB 4X4 RED LBZ
Spray-In Bed Liner, Air Bags
Custom Reese 20K slider FWH/Gooseneck hitch
265/75/16 Michelin LTX AT2's on PYO's
Duramax.com tow tune w/turbo brake
PPE Dual Fueler (P0087 cure)
Kitty on a "warm shelf", K+N Drop-in filter
Amsoil in all places, Amsoil BMK-27 Bypass
KYB shocks (stock sucked)
Autometer Boost/Pyro gauges/Edge CTS
EGR blocker and (Kennedy) finger stick
Merchant remanufactured transfer case 748,000
Kennedy lift pump, reserve tank with transfer pump
Suncoast trans and 1700 stall converter @ 748,000
14.558 @ 91.03 Hypertech now?????
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-25-2015, 12:29 AM   #4 (permalink)
CAN_Yeager
Block Heater
 
Join Date: Oct 2015
Posts: 15
iTrader Score: 0 reviews

It looks to me that although suspension can handle more than the GVWR of 9200 lbs it is likely a legal restriction that will keep my payloads/hitch pin weight to around 1638/or less. I suspect it's the size/efficiency of the brakes that is determining the 9200 weight restriction.
Offline   Reply With Quote Quick reply to this message
Old 10-25-2015, 12:33 AM   #5 (permalink)
Ron Nielson
Diesel Pro
 
Ron Nielson's Avatar
 
Join Date: Aug 2009
Location: Berryton, KS
Posts: 2,365
iTrader Score: 0 reviews

When I look at your chart, I'm confused by the tire rating (bottom line) for the rear axle. The gawr of 6084 is based on having 2 - 245 size tires on the axle, 3042 lbs capy each. You show something like 2556 lbs. for each tire. Please explain where this came from. I don't think your tires are really rated at 2556 are they?
__________________
Ron Nielson

2008 2500HD LT CCLB/Ally. Line-X, B&W Companion, MaxLoader Springs, Edge Insight CTS, Kennedy Custom ECM
2009 Arctic Fox 5er, Silver Fox Edition 29-5T, 3.6 Onan LPG, SteadyFast Stabilizers

Last edited by Ron Nielson; 10-25-2015 at 12:34 AM.
Offline   Reply With Quote Quick reply to this message
Old 10-25-2015, 08:14 AM   #6 (permalink)
CAN_Yeager
Block Heater
 
Join Date: Oct 2015
Posts: 15
iTrader Score: 0 reviews

I interpret this decal to mean max load per tire.or is max payload based on 6 passengers and these tires. Which would be strange as you could have 5 children or sumo wrestler's causing a huge variance .

Last edited by CAN_Yeager; 10-25-2015 at 08:21 AM.
Offline   Reply With Quote Quick reply to this message
Old 10-25-2015, 12:39 PM   #7 (permalink)
dayle1
Glow Plug
 
Join Date: Feb 2004
Location: Spicewood, TX
Posts: 211
iTrader Score: 0 reviews

Lots of errors here. You have mixed GCWR with max trailer weights, there is only one GCWR and it is around 23.5K lbs for your truck. Max fifth wheel weight is really 14.9K lbs. That is how much you can tow provided you can do it without exceeding the 9200 lb GVWR and the individual GAWRs. Since your truck weighs 7562 bs, you can add 1638 lbs to the truck before exceeding GVWR.

However, many owners exceed GVWR, it is not a law enforcement issue and your truck is out of warranty. In many states, you can register your truck for whatever GVWR you are willing to pay for. The one legal limit is you cannot exceed the tire ratings of 3042 lbs which sets the rear GAWR. Therefore you could tow a fifth wheel with a loaded pin weight approaching 2800 lbs and still be under the rear GAWR. This is where many owners towing fifth wheels find themselves. Over GM's GVWR but under the tire ratings and still legal. My '03 D/A 2500HD was similar to your truck and my fifth wheel had a loaded pin weight of around 2300 lbs and combined weight (truck & trailer) of just over 20K lbs.
__________________
Larry
2013 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
2019 Starcraft Telluride 292RLS
Offline   Reply With Quote Quick reply to this message
Old 10-25-2015, 12:50 PM   #8 (permalink)
TiredFarmer
Gone but not forgotten member
 
TiredFarmer's Avatar
 
Join Date: Jun 2013
Location: Waynesboro, Tennessee
Posts: 3,455
iTrader Score: 0 reviews

Dayle1 hit it on the head. Check your tires, they will tell you what the max weight is. Definitions of the acronyms might be needed here. GCWR is Gross Combined Weight Rating. GVWR is Gross Vehicle Weight Rating.
__________________
2008 Silverado K3500HD dually CCLB (LMM)
2005 Silverado K2500HD ECLB LT (LLY) (SOLD)
2003 Silverado 2500HD ECSB 6.0l/4L80e
2000 Pontiac Grand Am GT
Member #1063 3500 Dually Club
Offline   Reply With Quote Quick reply to this message
Old 10-25-2015, 12:51 PM   #9 (permalink)
dayle1
Glow Plug
 
Join Date: Feb 2004
Location: Spicewood, TX
Posts: 211
iTrader Score: 0 reviews

Quote:
Originally Posted by CAN_Yeager View Post
I interpret this decal to mean max load per tire.or is max payload based on 6 passengers and these tires. Which would be strange as you could have 5 children or sumo wrestler's causing a huge variance .
This is the best case maximum payload of the truck for passengers and cargo combined before exceeding GVWR. It is the 9200 lbs minus actual empty, stock weight of the truck, which is around 6600 lbs. Sometimes base model trucks are used w/o options, sometimes a 150 lb driver and a 1/4 tank of fuel is included in the base truck weight. So, this is a good starting point, but it is always better to get your actual normal loaded weight, including individual axle weights, as you have done to determine your remaining carrying capacity.
__________________
Larry
2013 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
2019 Starcraft Telluride 292RLS
Offline   Reply With Quote Quick reply to this message
Old 10-25-2015, 01:31 PM   #10 (permalink)
IGO1320
Diesel Superstar
 
IGO1320's Avatar
 
Join Date: Sep 2007
Location: Apopka Florida
Posts: 3,587
iTrader Score: 0 reviews

My E rated 265/75-16 tires have a weight rating of 3415 lbs each which should allow you to safely tow most fifth wheel trailers as long as the brakes are good and you have air bags (trailers are built with sufficient brakes for their weight). I personally don't tow large trailers over 65 mph because of the weight difference between truck and trailer. I have 520,000 miles on my truck now towing commercially so I do have experience to back up my opinion.

__________________
2006 2500HD CCSB 4X4 RED LBZ
Spray-In Bed Liner, Air Bags
Custom Reese 20K slider FWH/Gooseneck hitch
265/75/16 Michelin LTX AT2's on PYO's
Duramax.com tow tune w/turbo brake
PPE Dual Fueler (P0087 cure)
Kitty on a "warm shelf", K+N Drop-in filter
Amsoil in all places, Amsoil BMK-27 Bypass
KYB shocks (stock sucked)
Autometer Boost/Pyro gauges/Edge CTS
EGR blocker and (Kennedy) finger stick
Merchant remanufactured transfer case 748,000
Kennedy lift pump, reserve tank with transfer pump
Suncoast trans and 1700 stall converter @ 748,000
14.558 @ 91.03 Hypertech now?????

Last edited by IGO1320; 10-25-2015 at 01:31 PM.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Loud pop after going from 4WD to 2WD Towing Heavy Uphill DieselDogg Drivetrain - 2001 - 2010 16 12-08-2015 11:13 PM
Towing mirror wiring repair silva455 Electrical 11 10-29-2015 10:23 PM
Buzz sound when towing ataboy Duramax Fifth Generation: 2011-2016 (LML) 5 10-08-2015 09:14 AM


All times are GMT -4. The time now is 07:38 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide