NO! Tires, wheels, springs, air bags, none of it will alter or increase the federally mandated GVWR rating that GM placed on the vehicle. Can you spend thousands and carry the load? It can be done, but is it worth it at the end of the day as far as safety, comfort, long term durability on a truck that is already 16 years old? Not in my book, but you have to make that decision, not me.