The best and most accurate Chevy engine diagrams are available in the official Chevy service manual for your vehicle. Manuals for Chevy vehicles are available for downloading from the Helm Incorporated website, in the Chevy section under the GM header. This company provides all official repair guides for Chevy.
Provide the year, make and model of your Chevy vehicle to see a list of the manuals available to download. Official repair manuals are available for most Chevy vehicles along with the owner's manual and the scheduled maintenance guide. These manuals are available in PDF format, which allows for easy downloading and printing.
Third -party repair manuals for your vehicle are also available through Haynes and Chilton Auto Repair. These are not official Ford manuals, but they come from established and respected auto repair companies and generally contain engine diagrams. These sites can also be searched based on the year, make and model of the vehicle.