Dec 28, 2020 · GM SERVICE INFORMATION (GMSi) GM Service Information (GMSi) is the most comprehensive collection of vehicle diagnostic and service repair manuals for GM vehicles. Speed service repairs and control costs with access to GMSi. Subscribe now for instant access to the most accurate, up-to-date service information online.
Re: GM Service Manual DVD. Hey if you decide you don't want it, let me know what you'd want for it... Current vehicles: 2015 Chevrolet Colorado 2005 is as late as it goes... after 2005 GM switched to the online service that is linked to above... Of course that link is USELESS unless you are GM employee..