Ive been looking around all the locale parts stores for a decent repair & maintenance manual but cant seem to find anything for 2004 let alone our 2005 GM Silverados & Sierra's with the Duramax/Allison, as anyone had any better luck find one of the little manuals like a Chilton or Haynes paperback repair manual, the only ones I can seem to find on line are for big garages, and the go for close to $200.00.

IMO Helms is the best.Pricey but good

while on the topic, not to hijack the thread but does the DMAX have anything like this:

http://dan.prxy.org/Truck/6L_bible_html/html/TOC.html

I know, I know it's for furds but does the DMAX community have such a thing? This was amazingly usefull to me while working on my friends 6.0 pos... er I mean psd

I have not come across a site like that for the D-max but that looks it would serve as a manual, I would be interested in that site if it exists.