I recently found these GM upfitter Body Builder manuals for GM trucks that are a treasure trove of information. These are intended for custom builders who take the vehicles and build them out for police or other companies. They have diagrams of the chassis and installation locations with...
Can anyone recommend a good service manual out there for these vehicles? I'm looking for the factory manuals or the next best thing. There are factory manuals out there for up to 2018 maybe but they are all over $400. Then there are some digital manuals for under $40 but I can't tell if they are...
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