Today I changed the fuel filter on my 06 DuraMax. My first time doing it myself just wanted to say what a breeze. Maybe an hour total including the reset on the DIC. Kinda fun. :)
As you know it's always good to know how to change a fuel filter on the road. If you get a bad load of fuel you can be on your way again in a few minutes if you know how to change it yourself. If not, you're going to be waiting a while for road service.