Just traded my gasser for a 3500 D/A CC. No manuals though. I need a set of the '03 manuals, esp the Duramax supplement.
Thanks

http://www.gmgoodwrench.com/TipsAdvice/OwnerServiceManuals.html

I ordered the manuals for my 2002 from Helm, Inc. back when i got the truck. I'm not sure if those are the ones Max Power is referring to.