Hi, i find there are only 2 function options of on vxdiag gm Tech2win software main menu.
The correct menu show have more function options, like this
How can i find the missing menu?
We assume you set it up on Windows 10 operating system.
Windows XP and Windows 7 32bit system are recommended.
After connect car model you should choose correct software pack.
It works fine on Windows 7 system.