The Snap-on Software Upgrade 17.4 covers 49 domestic, Asian and European vehicle makes with general repairs, as well as newly expanded collision repair coverage. The update features new 2017 factory-level coverage for Buick, Cadillac, Chevrolet, GMC, Lexus, Toyota, Nissan, and more. This software upgrade offers access to over 4.9 million codes, tests, tips and data for 1981-2017 model years for extensive coverage, and coverage for more than 4.3 million Fast-Track guided component tests.