Kyllaen,
I haven't found it for free either... some of the info is out there, however to get some of the specific dates and original engine specs, you have to contact GM. The color code I have stumbled upon during my search, but can't find it now!
https://picasaweb.google.com/113636046886857960240/MiscTruckParts#5616349647391997634So what's the plan for the truck?
Do yourself a favor and pick up a can of PB Blaster and give a little shot of it to any bolt / screw you want to remove. I've removed almost every bolt there was on mine, and only had to wrestle with less than a handful.
Mark
