GM Factory Shop manuals you can get from www.helminc.com for about $60 last I checked. but they cover all engines, all options, all light duty trucks, suburbans, blazers, for any given year you specify.
if you want just a 6.2 engine GM manual, only place I know of is used ones, sometimes new..on ebay. also the military manuals there too. do a search under 6.2 and 6.2L and chevy diesel
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!