GM Techline Connect is official proprietary software intended for use by authorized GM dealerships and authorized independent service centers. Access requires paid subscriptions and specific hardware (MDI2, J2534 VCI). This guide is for educational and troubleshooting purposes for authorized users. Guide: GM Techline Connect Software Download & Setup GM Techline Connect is the modern web-based diagnostic and programming platform for General Motors (Chevrolet, Buick, GMC, Cadillac). Unlike the older TIS2Web, Techline Connect runs as an application on your PC but communicates through a web browser interface. Milfy 23 05 17 Kianna Dior Rich Housewife Loves... [TESTED]