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Help With Towing Capacity...

speedracer013

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speedracer013 Enthusiast

speedracer013

Posted
Posted

Hey can anyone help me out? I did a few searches and could not find anything. Im not sure on the gearing but another post said to look for a 3 digit code in the glovebox that starts with a G. I found one - GT4.

 

The truck is one of my bosses, its a 2007 GMC Sierra. NBS, Reg Cab, Long Bed, w/Towing package, 4.3L V6. 4x4.

 

The trailer it is towing is a full enclosed dual axle 13 footer - I believe it is around 1,500 lbs.

 

Thanks for any feedback.

 

Brad

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

GT 4 is 3.73 gears. I don't think you'll have any trouble towing 1500 lbs.

 

Your towing capacity should be around 5200 lbs. :smoker:

speedracer013 Enthusiast

speedracer013

Posted
  • Author
Posted
GT 4 is 3.73 gears. I don't think you'll have any trouble towing 1500 lbs.

 

Your towing capacity should be around 5200 lbs. :smoker:

 

Wow quick feedback!!! THANKS!!!!

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

The 5200 lbs is the tow rating for a 4.3 V6 with 3.73 gears assuming your towing from the hitch. :smoker:

rogerf Enthusiast

rogerf

Posted
Posted
What is the capacity with the trailer.

 

Im not really what your asking?

 

How much cargo weight is in the trailer?

 

Recall my old truck (4.3L V-6) was good for @ 5000 lbs. So trailer weight + cargo weight in the trailer + cargo weight in the truck should not exceed @ 5000 lbs. This motor has a lot more grunt than most will give credit. Will pull this weight just fine but might not do it very fast up some hills. Stopping is another matter. Would assume a double axle trailer has trailer brakes. Does this truck have a trailer brake controller?

Ranger Senior Enthusiast

Ranger

Posted
Posted

Not every double axle has brakes, a lot of the shorter (-16ft) trailers don't have em or really need em with a fullsize truck...My 7x12 utility is a double axle and no brakes...My truck has more capacity than the trailer haha, I've maxed out the weight and my truck didn't have any issues but I got a 5.3.

 

I just pulled a 20x8.5 (12' tall) enclosed trailer today, was a little tongue heavy I'd guess around 6-7,000 lbs and the truck has no problems pulling it...And yes the trailer did have brakes and they worked, I have a brake controller too.

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