Tools
New 12V Battery Ratings Chart for the 2026 Model Year
The latest Original Equipment (OE) Battery Ratings chart for the 2026 model year is now available under the Reference Charts menu for use when testing OE batteries. (Fig. 5) […]
Techline
New Firewall Exclusions, Windows 10 Support Removed in Latest Dealer Infrastructure & Security Guidelines Update
The latest GM Dealer Infrastructure & Security Guidelines (DISG) have been updated with recommended firewall exceptions for Techline Connect applications. (Fig. 1) The following exception has been added and needs […]
How Things Work
New Model Features and Product Information Videos
Take a detailed look at a wide range of innovative features and advanced systems found on GM vehicles to gain a better understanding of proper operation. Each short video reviews how a feature works, highlights operating tips and shows ways to customize settings, if applicable.
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