VXDIAG VCX NANO GM Techline Connect License Error?


I could not get the VXDIAG VCX Nano GM to program RPOs in the BCM via Tech2Win as well as perform the VATS relearn via Techline Connect. Techline connect throws a license error.

Techline Connect Sps2 2


Solution 1:

Turns out, Techline Connect installs its own version of Tech2Win that throws a license error if using with the VCX Nano. In essence, you can only have one installed at a time.

I wiped my tuning laptop cleaned and installed VX Manager plus the associated GM Software. Then, I was able to use Tech2Win to program the BCM and perform other diagnostic functions.

After which, I logged into Techline Connect and performed all of the updates. This allowed me to add my Z06’s VIN and perform the VATS relearn.

I then had to wipe the laptop and install VX Manager + GM Software to be able to continue to use Tech2Win.

The above accomplished what I needed.



Optional solution 2:

Using Virtual box.

Run multiple installs of windows on a virtualization platform (for example VirtualBox on Ubuntu Linux). You can have dozens of windows “installs” on one machine and simply boot whichever you’re in need of for the task at hand. Create one “clean” base install and then clone it for various “licensing scenarios”. You should look into it.


All the GM interfaces present themselves as network interface devices, because the licenses (lets call them what they really are: subscriptions) they hold are expired by the time kept on the VDI device’s RTC. This is another protection scheme – if the interface can sync it’s internal clock to the internet it’s harder to get around their license expiration.



Option solution 3:

Tips to Install VXDIAG GM GDS2 T2W & Techline Connect on the Same PC?