Any shop looking to work on GM products at the top level would be well-served by investing in both a Tech2 and GDS2.
Boasting greatly improved features over the Tech1/Tech1A such as more data parameter identification data (PID) being viewed at once, graphing and more bi-directional controls.
It also introduced the ability to do a network check that allows you to ping all the modules on the system and see which are responsive and if they have any codes.
This information and more can be found at ASA’s scan tool resource website:
Join Pete Rudloff, technician and owner of Pete’s Garage Inc.
GM MDI Multiple Diagnostic Interface scanner will provides the full dealer lever diagnostics and programming for all Vauxhall/Opel 16 pin vehicles from 1996 to 2017, support Chevrolet up to 2018.