GM Tech2 Diagnostic Scanner RS232 self-test Guide

GM Tech-2 is the same tester Technicians use to diagnose GM vehicles. The Vetronix Tech 2 comes with Authentic GM software and provides support for on-board diagnostics on all GM systems 1992 thru 2014.

How to process GM Tech2 Diagnostic Scanner RS232 self-test?

1.Please use the adapter like the following pic shows.Or please make a network cable like this,as we have customer before have the cable problem.

GM Tech2

2.Go to main menu,choose tool options

GM Tech2

3.Tool options,then choose self test.

GM Tech2


gm tech tool


gm tech ii


gm tech 2


gm tech2 scanner