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GM truck towing capacity


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There is a chart in your owner's manual you need to refer to. The towing capacity changes depending on cab type, 2WD vs 4WD and a few other variables. If you don't have the manual you can download one from the Chevy or GMC website.

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Welcome to the forum!

 

As for specific tow ratings, a little more information about your truck would be helpful. Engine, cab, 2 or 4 wheel drive, etc. The owners manual is a great wealth of info as well as others have stated.

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And GM has year specific towing guide manuals available, along with owners manuals available, on their websites in PDF form you can download.

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  • 2 months later...

I need some help on towing capacity for a 99 GMC Yukon that I'm looking at. I'm not sure if it a 1/2 ton or what you consider a heavy half? It's a 1500 4wd new Jasper transmission and it appeared to have six lug on it I forgot to actually look , but am I also suppose to look at the pumpkin and count the bolts on there? Reason why is I have a 27ft hornet travel trailer and my dodge doesn't. Like pulling it either.. thanks for any comments just learning about this.

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99 Yukon is the same as the Tahoe and is a half ton. I had one of these and it did fine with 4000lbs of trailer but struggled with a 6000lb one (which was the max tow rating) But it was full stock, sounds like yours has had some drivetrain mods. However it could have just been the transmission that was replaced and not the front and rear diffs.

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I need some help on towing capacity for a 99 GMC Yukon that I'm looking at. I'm not sure if it a 1/2 ton or what you consider a heavy half? It's a 1500 4wd new Jasper transmission and it appeared to have six lug on it I forgot to actually look , but am I also suppose to look at the pumpkin and count the bolts on there? Reason why is I have a 27ft hornet travel trailer and my dodge doesn't. Like pulling it either.. thanks for any comments just learning about this.

 

Max tow rating from the 1999 GMC Yukon owners manual is 6500lbs. More specific ratings...

 

4x4 with 3.42 gears is 5,500lbs. 4x4 with 3.73 gears is 6,500lbs.

 

You would have to check your glovebox tag to verify gear ratio. GT4 is 3.73 gears, and GU6 is 3.42. Do you have any more information on the trailer like manufacturer and model year?

https://my.gmc.com/content/dam/gmownercenter/gmna/dynamic/manuals/1999/gmc/yukon/1999_gmc_yukon_denali_owners.pdf

 

 

Weight of the Trailer

How heavy can a trailer safely be?

 

It depends on how you plan to use your rig. For example, speed, altitude, road grades, outside temperature and how much your vehicle is used to pull a trailer are all important. And, it can also depend on any special equipment that you have on your vehicle. The trailer should never weigh more than 6,500 lbs. (2 951 kg). But even that can be too heavy. Maximum trailer weight is calculated assuming the driver and one passenger are in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers and cargo in the tow vehicle must be subtracted from the maximum trailer weight.

 

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I believe that there were no options for rear end gears in the Yukon/Tahoe SUVs - 3.73 was the only one. The 5.7L engine for the 97-99 model years best when paired with a 3.73. They also had a 12,000 CGWR - I also remember the trailer tow rating of 6000 lbs

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