Global Diagnostic System 2 aka GDS2.
GDS2 is GM's motor vehicle diagnostic software used by auto mechanics to perform diagnostics, including reading fault codes, resetting electronic modules configurations and various other configurations.
In order to have access to GDS2, one has to subscribe.
In this tutorial, I'll demonstrate how to pay once then have GDS2 access for eternity.
GDS2 uses two security measures.
1. A hardware ID file, name "swkV3"
2. A system licence file.
This tutorial circumvents the system licence file. That's why one needs to purchase a GM subscription in order to obtain the hardware ID file.
Install and run GDS2 on all the PC you intend to use the GDS diagnostic software.
Navigate to C:\ProgramData\GM\TIS2WebProxy\.dls\.lreg
From that folder, delete the licence file that's there and replace it with the attached infiniteLease.dat file.
The infiniteLease.dat file also works with the new Techline GDS2.
Restart the GDS2 application. The Days remaining until lease expires should change to infinite.
GDS2 Infinite lease file