| Problem | Likely Cause | Solution | |---------|--------------|----------| | Tech2Win says "No valid license found" | TIS2Web service crashed or didn't start | Reboot VM. Manually run C:\TIS2Web\start_server.bat as admin. | | USB VCI is not seen inside Tech2Win | VMware USB arbitration conflict | In host PC, go to Device Manager → Universal Serial Bus controllers → Disable "USB Selective Suspend". Then reboot host. | | "Communication Error 23" when programming | Power supply too low on vehicle battery | Connect a battery charger (14.5V minimum) to the vehicle. GM modules are voltage-sensitive during flashing. | | Global TIS shows empty parts list | Database paths not mounted | The VM expects C:\GlobalTIS\DB to exist. If missing, re-extract the ZIP. | | VMware Workstation 9 crashes on Windows 11 | Hyper-V conflict | As admin, run bcdedit /set hypervisorlaunchtype off and reboot host. |
handheld scanner on a PC. It is vital for diagnosing older models that do not support modern GDS2 systems. VMware Workstation 9 Image:
A software emulator that replicates the exact interface and functions of the original GM Tech 2 handheld scanner on a PC. It is primarily used for Opel and GM vehicles manufactured between 1996 and 2013 . | Problem | Likely Cause | Solution |
Before starting the virtual machine in VMware Workstation, you must enter your computer’s BIOS/UEFI on startup and ensure hardware virtualization is enabled.
ELM327, standard OP-COM (typically do not support full programming) Then reboot host
Launch VMware Workstation and select "Open a Virtual Machine."
It allows you to read and clear Diagnostic Trouble Codes (DTCs), view live sensor data, and perform bi-directional actuator testing on chassis, engine, and body control modules. 3. TIS2Web | | Global TIS shows empty parts list
Ideally with at least 8GB of RAM (since you are running two operating systems at once). A Diagnostic Interface: GM MDI / MDI2: The professional choice.
Here is a summary of the primary functions and compatibilities of these GM diagnostic tools: