so you may have read im looking at a 2500HD but im confused on whats the difference between a 2500 and 2500HD

 

the HD you can tow more weight.. almost as much as a 1 ton.. and its got a full floating rear axel probably more engine options. 6.0 or 8.1 and the duramax with auto 6speed.....my dad has a 06 2500hd 6.0....its a rough ride empty..but what 3/4 ton aint rough?

 

the difference is gross weight 2500hd is 8600 with 8 lug wheels and 2500 is 6500 with 6 lug wheels.

 

I have a 2004-2500 non-HD crew cab 4x4 and from what I can tell, the difference is that the HD frame is 2" taller meaning more heavy duty. You can see this in the front bumper the most, as the top plastic bumper cap is 2'" taller than the non-HD and the 1/2 ton. Stronger frame means more capacities. Mine also has a 373 rear gear which I'm not sure you could get on the HD. I could be wrong, but I thought the HD came standard with a 410 ratio. My truck has 8 lug wheels and a 8600 lbs. rating.

 

My 2004 2500HD has a GVWR of 9200 lbs

 

I have a extended cab 2500HD 2011 gas,differential is 3.73,GVRW is 4309 kilo,there is also one at GVRW at 4490 kilo diesel, depends on what motor is in the truck.