3/4 Ton 250, 2500 payload limitations (gas vs diesel)

The short answer is that while 3/4 ton HD trucks share nearly all of their important parts with their 1 ton counterparts, they are limited to 10,000 lb GVWR if they want to stay under the cutoff for higher registration fees in many states. That is the reason every manufacturer's 3/4 ton HD truck is rated at 10,000 GVWR. Even if it might be able to handle a greater load.