Here’s a comparison table of VNCI MDI2, GM MDI2, and VXDIAG GM for diagnostic use on GM cars:
| Item |
VXDIAG VCX NANO/VCX SE GM |
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| Manufacturer | VNCI | Clone | VXDIAG |
| Price | Lower than GM MDI2 | Higher cost (official GM tool) | Mid-range price, lower than GM MDI2 |
| Operating system | Win7/Win10 | Win7/Win10 | GDS2 : Win7, Win10; Tech2win: only Win7 32bit |
| Driver | Original with original MDI driver | MDI Manager | VX Manager |
| GDS2 | Yes | Yes | Yes |
| Tech2win | Yes | Yes | Yes |
| DPS (Development Programming System) | Yes | Yes | – |
| Passthru mode | Yes | Yes | Yes |
| Techline Connect SPS2 online programming | Yes | Yes | Yes |
| Vehicle coverage | all GMC, Chevrolet, Buick, Cadillac and Opel models from 1996 to 2023 | GM Chevrolet Cadillac GMC Buick Hummer / OPEL till 2022 | GM Chevrolet Cadillac GMC Buick Hummer / OPEL till 2022. Tech2win cannot do Opel and Saab (2000-2010), cannot do Holden. |
| Protocols | SAE J2534 Pass-Thru, CAN FD, DoIP, UART, Class2, KWP2000, GMLAN(CAN) | UART, Class 2, KWP2000 and GMLAN (CAN) | UART, Class 2, KWP2000 and GMLAN (CAN) |
| Protocol Support | CAN FD, DOIP | CAN FD, DOIP | CAN FD, DOIP |
| Software Compatibility | Techline Connect, GDS2, DPS, Tech2Win | Techline Connect, GDS2, DPS, Tech2Win | Techline Connect, GDS2, DPS, Tech2Win |
| Connection | USB, WiFi, WLAN | USB, WiFi | VCX NANO: USB/WiFi |
| VCX SE: USB, WiFi, LAN | |||
| Multi-language | GDS2: Multi-language; Tech2win: English | GDS2: Multi-language; Tech2win: English | GDS2 Multi-language; Tech2win: English |
| Software Update | Update by link | Update by HDD | Update by link |
| Firmware Update | Update online via VNCI manager | Update online | Update online via vx manager |
| Activation | No | Yes | No |
| Platform Coverage | GM Global A/B (1996 – present) | GM Global A/B (1996 – present) | GM Global A/B (1996 – present) |
| J2534 Passthru Support | Yes (SAE J2534, ISO22900) | Yes (SAE J2534) | Yes (SAE J2534, ISO22900) |
| ECU, PCM, ABS, VTA Programming | Yes | Yes | Yes |
| Immobilizer Matching | Yes | Yes | Yes |
| Maintenance | Free 1 year | Depends on service agreement with GM | Free firmware updates, no specified maintenance plan |
| Maintenance | Free 1 year | Depends on service agreement with GM | Free firmware updates, no specified maintenance plan |
| irmware Updates | Free online via VNCI Device Manager | Official updates through GM subscription | Free firmware updates |
| Connection Modes | USB, WiFi (AP Mode), WLAN (Station Mode) | USB, WiFi, Ethernet | USB, WiFi, Ethernet |
| Switching AP and Station Modes | Via device button | Automatic, depending on configuration | Not explicitly stated, manual mode configuration |
| Driver Compatibility | Compatible with original GM driver, no 3rd party | Original GM driver | May require VXDIAG drivers |
| Warranty/Support | 1 year free maintenance | Official GM support (depends on service agreement) | 1-year warranty |