Below is a basic info comparison table among VXDIAG VCX NANO GM, GM Tech2 & GM MDI in terms of their features, function, similarities & differences etc.
| Item | VXDIAG VCX NANO for GM/Opel | GM MDI WIFI | GM Tech II scanner |
| Image |  |
 |
 |
| Software | GDS2 (2014) /Tech2Win | GDS 2 (2011)Tech2 Win | TIS2000/SPS |
| Need computer | Yes, it’s PC-based. | Yes, it’s PC-based. | TIS2000 on WinXP |
| System
requirement |
Win7 32/64bit /Win8 64bit system | Package software: Win XP only
v2016.11 software: Win 7
|
Win XP for TIS2000 |
| Multi-Language | Multi-Language | Multi-Language | Multi-Language(depends on vehicles) |
| WIFI | YES, VXDIAG GM has wifi version and USB version | WIFI and USB connection | NO |
| Diagnosis | wireless basic diagnostic | wireless basic diagnostic | basic diagnosis |
| Programming | GM TIS2WEB online Service Programming System (SPS) | wireless online programming
–offline programming ,such as European Chevrolet, Opel, but not for all cars
|
Online programming with TIS2000 on Saab/Opel (-2008) |
| Update | Firmware updatable
Software updatable |
Firmware update | Update via 32MB Card |
| Activation | No need to activate | Yes, MDI need activation. | No need to activate |
| Supported protocols | CAN, UART, KW2000, Class2, GM LAN, etc. | UART, Class 2, KWP2000 and GMLAN (CAN) | CANdi interface |
| Supported vehicles | Vehicles to 2015 GM,
OPEL
|
vehicles from 1990-2014 GM,
Opel, Chevrolet, Saab, Australia Holden (2010-2012)
|
vehicles from 1992-2013 GM,
SAAB, OPEL, UZUKI, ISUZU, Holden |
| Advantage | -cheap but with the same function as GM MDI
– WIFI and USB connection
-good for new cars
|
-can support software from original factory
-support offline & online programming
|
-cannot plug original software card, but can support original program
-easy to carry on
|
In conclusion:
Chinese GM MDI, GM TECH2 and VXDIAG VCX NANO are different in:
1.Vehicle year coverage:
Chinese GM TECH2: -2009 year
GM MDI: 2009 – year.
VXDIAG VCX NANO GDS2 tech2Win:
GDS2 covers GM from 2009 to new 2015, Tech2Win covers GM Group vehicles Opel Saab from 2005 to 2013.
2. Difference in function:
GM tech 2: diagnosis, programming if working together with TIS2000 CD and only available to GM and SAAB Vehicle.
GM MDI: programming online, support offline programming for Opel Chevrolet
Note: if you want to program by using GM MDI, you need to buy account at GM MDI official site:
https://www.acdelcotds.com/acdelco/action/subscribehome
VXDIAG VCX NANO GM: not supports offline programming compared with GM MDI.
3. Handheld or PC-based / communication:
GM tech 2: handheld
GM MDI: works with a Laptop, communicate via wired or wireless network, installation OS: XP
VXDIAG VCX NANO GDS2 tech2Win Communication: via both USB and Wifi, installation OS: any OS
4. Update:
GM Tech2: update via 32MB Card
GM MDI: cannot update
VXDIAG GM: via CD
That’s all
Enjoy