VEHICLES, CAMPERS, and BOATS > Powerplant, Driveline, and Braking

Question about 3/4 ton v 1 ton springs

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Wilbur:
So I'm looking at trucks (want a Duramax) and while I usually will price them at GMC.COM so I can make them just the way I want, I also look at what dealers have already in stock as that may be a cheaper way to get one if a dealer has one they cant move or whatever. Some times they have what I want, some times they don't. So I was comparing what I would need to buy if I wanted to add (say) the plow package to a truck that didn't have it (I also look at this because it bugs me I cant get a sliding rear window with the plow package unless I get a Denali which I don't want to pay for). And I also thought okay....what if I find a 3/4 ton that has everything I needed but I wanted to upgrade it to a 1 ton what would that entail....so I was comparing part numbers at gmpartsonline.com and other sites and was surprised to see there were no differences between the rear springs in the 3/4 ton and the 1 ton. Do I have that right? I knew the driveline was the same but I figured the springs would be different for the 3500 v. the 2500 but the front torsion bars and the rear springs seem to be the exact same ones? Am I missing something? 
 

Flyin6:
I looked into this as well

I wasn't seeing a lot of difference between a diesel 2500 vs a 3500

The 3500 has the dual rear wheel option, but same suspension, same transmission, same engine...

Not completely sure but I believe the brakes are the same as well. I think with respect to the 3500, they just give it higher gwt/towing numbers but other than a rebadging it's the same truck. So GM figures the 1 ton sales market is of a given percentage of the HD truck sales. They know that accepting a heavier work/duty cycle that could lead to more component failures. So the number crunchers do their homework and figure out that at a given price point the extra component failures still fits their profit model, and they're off to the races...

If you look at the HMMV trailer. There is a medium duty and a heavy duty version. The heavy trailer caries much, much more than the light HMMV unit. But the only real difference is the aluminum tag they pop rivit to the trailer at the factory. Yup, all those trailers are the exact same. Tags are changed so the end user with the lighter vehicle does not mistakenly exceed his truck's towing ability

EL TATE:
Not sure how relevant to more modern trucks, but I know mine had an option code for HD suspension leading me to believe there is a lighter duty option for even the duramax. mine was definitely 3500 series springs on a 2500 truck, but it was an '03. I think that the newer ones are all built the same suspension wise but like Don stated, simply a dually vs. single option.

Wilbur:
I was comparing SRW versions and found no difference. The last thing I noticed the DRW 3500 was the same spring as the 2500 "with increased capacity". And the front torsion bars appear the same as well.

Thanks guys....so I wasn't losing my mind! ha.

Nate:
Just thinking out loud here.......

Maybe heavier duty tires....

Maybe an extra helper spring or 2........

3500 i believe has a long bed option.........

Maybe different gearing.........

Maybe different programing on the different control modules. .......

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