PCMTuner can be used as a good j2534 passthru device for multiple software. iECUTool engineer just tested latest version GDS2 2023.7 software with pcmtuner and confirmed it works great.
How to Install GM GDS2 2023.7.13 for PCMTuner?
Download GDS2 software, install GDS2AutoInstall
Delete GDS2 shortcut on desktop
Go to C://Program Files(x86)/GDS2/bin folder, send GDS2Launcher to desktop
Rename GDS2launcher shorcut as GDS2
Contact www.iecutool.com customer service to activate GDS2 via Teamviewer.
Then install pcmtuner driver
Go to computer Device Manager, make sure pcmtuner is well connected and driver is detected.
Run GDS2 on desktop
Select interface as SM2 USB
Now software is ready to use.