What is the reason that Haynes and Chilton do not have duramax repair manuals? They have pretty much everything else for every car I've ever had. Why not the dmax?

What a pain. I'm totally flying blind here without a repair manual. The Helm Inc site shows that this manual is not yet available until 8/1/2012, and when I see this it usually takes alot longer for the items to actually become available.

2003 Chevrolet SilveradoGMC Sierra And Sierra Denali Service Manual - Helm Incorporated

 

try ALLDATAdiy.com Leading Source of Factory Automotive Repair Information

they have repair manuals for almost all vehicles, including your 2003 dmax, it costs like $17 for a year or $30 for 5 years