How to upgrade brakes on 2000 Chevy K3500 DRW.

I got a lesson on that same truck when when I gravity bled new front calipers. The result was the loudest screech I ever heard when I fired it back up. I should have read up on it first, you are supposed to leave the truck running when you do it. I'm still not sure where all the fluid went, it was a lot more than I had in the drain pan. Change the calipers and hoses to correct your darting/pulling problem.