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Old 04-10-2017, 03:00 PM   #1
FandHB
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2016 2500 Duramax/2017 3660FL

Looking to purchase a 3660FL and see conflicting tow ratings from the GM supplemental diesel owners manual to those listed on the GMC website. Anywhere from 13,200 which would be maxing out the rating & up to 14,500 which would make me more comfortable. Pin weight doesn't seem to be an issue and I plan to equip the truck with air bags to more comfortably tow the weight regardless.

Anyone towing something similar with the 2500?
 
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Old 04-10-2017, 06:15 PM   #2
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Don't ask me why or how GM could change the 5 wheel towing spec's so much and not change the trucks one iota but the 2015 had a towing capacity of 17,100 lbs for a 5wheel but the 2016 was dropped way down to just over 13,000. Maybe it was a typo ??? no idea... What I do know is it will tow your trailer with no issues. Been towing my 3790RD with the 2015 cc SRW 6.5 box for two years, air bags make it ride real nice.... Just ordered a 2017 CC SRW 3500 as I just couldn't resist the new HP & Torque, went with the 3500 this time as I could get the pkg I wanted.
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Old 04-10-2017, 06:35 PM   #3
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The tow limits for some part are a joke. The DRW trucks are held to a lower standard. That is one reason they have more capacity. Do a google search foe J2807 tow standards or Tow standards finally pass the sniff test.
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Old 04-10-2017, 06:36 PM   #4
FandHB
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Thanks for the info I appreciate it. I know it's weird. I actually found another chart on their site showing 13,900 with 3.73 gears and max 25100 GCWR. If you took the curb weight of the truck and the pin weight away you're left with 14,700. I think it is capable of towing the 13,200 3660.
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Old 04-10-2017, 06:44 PM   #5
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Is this 2017 3660Fl a Montana or an Alpine? I could not find it listed as a Montana. The Alpine 3660FL lists the pin weight as 2950 lbs. The 2016 Chevrolet Duramax 2500's payload capacity is listed as 2600 lbs. With no one in the truck, you would be 350 lbs overweigh.
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Old 04-10-2017, 07:36 PM   #6
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Getting more confused with the info I found but I did find a king pin calculator that is pretty simple. Max trailer weight / 15-25%. The unit is a Montana 3660FL and weighs 13,200.
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Old 04-10-2017, 10:33 PM   #7
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Don't know where you got the info, but I just looked on chevrolet.com and their fifth wheel weight is 18,100 lb. Pretty much the same as in the past.
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Old 04-11-2017, 03:25 AM   #8
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Hi

You have to be careful using the weight information. The guy next door was telling me his 2500 Duramax was rated for the same GCW as my 3500. When I got him to let me look at his manual there was a little start next to the weights he was using and when we found the note the star indicated that was the weight rating for a 3500.

Apparently GM puts all the ratings for the 2500 and the 3500 on the same chart and the user has to figure out which applies to their truck.

Now just as a note most states have laws that result in a 20 year prison sentence if you have a serious accident while over loaded.

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Old 04-11-2017, 07:02 AM   #9
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Throw the books away and go by the numbers on the Door Pillar. Those will be the numbers for your truck. The typical Gross for 2500s is 10K, so once you load the truck with passengers and the bed with gear, you generally don't have a lot of capacity left for a heavy pin.
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Old 04-11-2017, 07:15 AM   #10
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Originally Posted by mhs4771 View Post
Throw the books away and go by the numbers on the Door Pillar. Those will be the numbers for your truck. The typical Gross for 2500s is 10K, so once you load the truck with passengers and the bed with gear, you generally don't have a lot of capacity left for a heavy pin.
Hi

You are correct to determine the weight of the TW only unfortunately they no longer put the Gross Combination Weight Rating on the door post and you need to get in the owner’s manual for that truck for that.

This is where the guy next door went wrong the owner’s manual for his 2500 included the weight ratings for the 3500 as well as the 2500.

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Old 04-11-2017, 09:08 AM   #11
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Originally Posted by Phil P View Post
Hi


Now just as a note most states have laws that result in a 20 year prison sentence if you have a serious accident while over loaded.

Phil P
Can you cite your source? Never heard this before.
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Old 04-11-2017, 12:03 PM   #12
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GVWR (never use EW) of a 3660RL is 16,645. Pin will be 20% or 3,300...well over a 2500 diesel.
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Old 04-11-2017, 04:48 PM   #13
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May I suggest you watch this video. https://youtu.be/-IBtVdr0Iyc
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Old 04-12-2017, 04:18 AM   #14
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Can you cite your source? Never heard this before.
Florida dangerous Instrumentality law

The following links take you to the information I have referred to.

They all refer to a Doctrine. Law enforcement uses this doctrine to bring charges against the owner or operator of a motor vehicle used in an unsafe manner and results in death or serious injury. Charges such as Vehicular Manslaughter or Vehicular Homicide are not uncommon under this type of circumstance.

I found out about this from a fellow that worked for me when he told me about a fatal accident he was involved in and the FHP towed his drivable truck and trailer to the nearest scale and weighed it. He told me that had the truck been over weight by 1 lb they would have charged him with Vehicular Homicide. Fortunately he was way under the weight limitations of the truck and trailer.

Most states have similar rules and laws.

https://definitions.uslegal.com/d/da...lity-doctrine/

https://definitions.uslegal.com/d/dangerous-instrument/


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Old 04-12-2017, 07:16 AM   #15
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Originally Posted by FandHB View Post
Pin weight doesn't seem to be an issue and I plan to equip the truck with air bags to more comfortably tow the weight regardless.
Yes, air bags will help level your overloaded 2500 and improve the ride a little but they WILL NOT increase your trucks capacity in any way.
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Old 04-12-2017, 12:25 PM   #16
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Sorry to disagree, air bags do increase the cargo carrying capacity of a truck, they do not increase the "sticker capacity" of the truck in the same manor that adding more springs will add to the cargo carrying capacity but again not increase the "sticker capacity" and for some on this site the sticker is all that matters. Whether or not the truck is completely safe to tow or not is of no relevance to them as they are fixated on a sticker. Lots of scare stories about going to jail if you are in an accident with your recreational trailer and over the sticker capacity but no proof of such .....
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Old 04-12-2017, 07:27 PM   #17
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Originally Posted by hackeagle01 View Post
May I suggest you watch this video. https://youtu.be/-IBtVdr0Iyc
Good video except all the excruciating detail of the mods he made to his F250. The main point is a good one, don't exceed the rating of your tow vehicle. A few years back we were at Pismo Beach, CA on a Friday afternoon/evening. We were right at the entrance where everyone was driving onto the beach to camp for the weekend. You could not believe the never-ending parade of monsterous 3-axle toy haulers being pulled by everything under the sun. Some were pulling with 4500-5500-6500 series trucks, but the majority were 1500-2500 SRW rigs, most WAY over-loaded. Unbelievable.
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Old 04-12-2017, 07:30 PM   #18
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Quote:
Originally Posted by Phil P View Post
Florida dangerous Instrumentality law

The following links take you to the information I have referred to.

They all refer to a Doctrine. Law enforcement uses this doctrine to bring charges against the owner or operator of a motor vehicle used in an unsafe manner and results in death or serious injury. Charges such as Vehicular Manslaughter or Vehicular Homicide are not uncommon under this type of circumstance.

I found out about this from a fellow that worked for me when he told me about a fatal accident he was involved in and the FHP towed his drivable truck and trailer to the nearest scale and weighed it. He told me that had the truck been over weight by 1 lb they would have charged him with Vehicular Homicide. Fortunately he was way under the weight limitations of the truck and trailer.

Most states have similar rules and laws.

https://definitions.uslegal.com/d/da...lity-doctrine/

https://definitions.uslegal.com/d/dangerous-instrument/


Phil P
Thanks for the links, Phil. Serious accident is one thing, vehicular homicide is another.
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Old 04-12-2017, 11:47 PM   #19
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Really appreciate all the input. I want to make sure the truck can handle the load and travel safely. We've also decided on the 3790RD.

According to the SAE J2807 calculator which I believe to be the most accurate and legal I have entered and confirmed the following:

GCWR
25100
GVWR
10000
GVW
7392
TWR(trailer + 1000#)
14085
Hitch + Cargo
1250
Passengers
700
20% Pin Weight Factor
= 3290 which is > the trailer pin weight

I feel comfortable with this.
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Old 04-13-2017, 04:04 AM   #20
Phil P
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Thanks for the links, Phil. Serious accident is one thing, vehicular homicide is another.
I will let you look up the legal definition of a serious accident.

Others here have posted about having law enforcement weigh their TV and trailer after a fender bender that required one of the vehicles to be towed.

There are other charges than can be brought like Attempted Vehicular Manslaughter etc.

Then on top of that you may want to have someone very familiar with insurance policies advise you on how much coverage you have when you deliberately exceed the capabilities of your vehicle.

The door sticker is the legal limit your vehicle is allowed to weigh. The only entity that can change that is the manufacturer.

If you want to gamble on those types of problems then that’s fine with me but I am too old to take that kind of chance.

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