calsdad
May 29, 2016Explorer
What raises the GM 2500HD tow rating to 13k besides 4.10's ?
I've searched all over the internet trying to figure this out and thought somebody here might know the answer to this question:
The trailer weight rating for the GM GMT900 generation (2007-2014) 2500HD and 3500HD pickups with the 6.0L gas engine (Silverado or Sierra), go from anywhere in the 9000-9700 pound range ( varies depending on body style).
It lists the trailer weight rating for the 4.10 ratio as 13k pretty much across the board.
You can pull the specs from page 10 of this brochure:
http://www.chevrolet.com/content/dam/Chevrolet/northamerica/usa/nscwebsite/en/Home/Help%20Center/Download%20a%20Brochure/02_PDFs/MY13%20Silverado%20HD%20eBrochure.pdf
So the question is: What else (if anything) changes on the truck to increase the trailer weight capacity to 13k besides the gear ratio?
I've searched high and low trying to figure this out and asked a few GM guys I know and nobody can give me the technical details.
From what I can tell searching thru parts suppliers - it doesn't look like there is any bigger brake option. The part numbers for front and rear rotors on all Chevy 2500 & 3500 pickups and the 2500 series SUV's - are the same.
There are slight ratings differences in the HP and torque between the 6.0L in the trucks and the 2500 SUV's - but no published difference for the extra tow capacity.
I did find a listing for an electric cooling fan setup for "enhanced tow package" for the 6.0L trucks. I know the standard setup is an engine driven fan.
The 2500HD pickups and the 2500 SUV comes with the 6L90 transmission, so there's no bigger transmission to go to except for the Allison - and only the diesels get those now.
So is that all it is? Is there just some extra engine cooling in the form of electric fans and the 4.10 ratio in drivetrain?
The trailer weight rating for the GM GMT900 generation (2007-2014) 2500HD and 3500HD pickups with the 6.0L gas engine (Silverado or Sierra), go from anywhere in the 9000-9700 pound range ( varies depending on body style).
It lists the trailer weight rating for the 4.10 ratio as 13k pretty much across the board.
You can pull the specs from page 10 of this brochure:
http://www.chevrolet.com/content/dam/Chevrolet/northamerica/usa/nscwebsite/en/Home/Help%20Center/Download%20a%20Brochure/02_PDFs/MY13%20Silverado%20HD%20eBrochure.pdf
So the question is: What else (if anything) changes on the truck to increase the trailer weight capacity to 13k besides the gear ratio?
I've searched high and low trying to figure this out and asked a few GM guys I know and nobody can give me the technical details.
From what I can tell searching thru parts suppliers - it doesn't look like there is any bigger brake option. The part numbers for front and rear rotors on all Chevy 2500 & 3500 pickups and the 2500 series SUV's - are the same.
There are slight ratings differences in the HP and torque between the 6.0L in the trucks and the 2500 SUV's - but no published difference for the extra tow capacity.
I did find a listing for an electric cooling fan setup for "enhanced tow package" for the 6.0L trucks. I know the standard setup is an engine driven fan.
The 2500HD pickups and the 2500 SUV comes with the 6L90 transmission, so there's no bigger transmission to go to except for the Allison - and only the diesels get those now.
So is that all it is? Is there just some extra engine cooling in the form of electric fans and the 4.10 ratio in drivetrain?