The VXDIAG VCX NANO GM is a commonly used J2534 device for programming and updating vehicle modules. However, some users have encountered the error “Access Unauthorized with Destination System Error” when logging into the ACDelcoTDS website, which can lead to account bans. Here’s the cause of the issue and how to resolve it.
Cause of the Issue
ACDelco explicitly states that using counterfeit GM MDI or MDI2 devices will result in account bans:
“Use of counterfeit 'clone' GM MDI devices will result in your account being locked. Aftermarket J2534 devices are not impacted.”
While the VXDIAG VCX NANO GM is supported as a J2534 device, attempting to use it as an MDI emulator can trigger a ban. This is often due to installing MDI-related drivers or cracked software.
Solutions
1. Remove MDI-Related Drivers
Uninstall the following drivers:
- GM GDS2/T2W
- SGM RDS
Only keep the official PassThru driver to ensure the device operates in J2534 mode.
2. Do Not Install Cracked GDS2/T2W Software on the Same Computer
Cracked GDS2/T2W software can enable MDI emulation and lead to account bans. If you need to use cracked software, ensure it is installed on a separate computer, not on the same one with the PassThru driver.
Here are some solutions for running GDS2/T2W software on the same computer:
I. VXDIAG GDS2 T2W and Techline Connect Installation Tips for One PC
II. Installing VXDIAG GDS2, Tech2Win, and Techline Connect on One Computer
3. Use Techline Connect
Log in to the ACDelcoTDS website and download the official Techline Connect software. This tool is specifically designed for J2534 devices and eliminates the need for MDI functionality.
Steps for Proper Configuration
- Install only the official PassThru driver.
- Ensure cracked software is not installed on the same computer as the PassThru driver.
- Log in to the ACDelcoTDS website and operate the device strictly in VXDIAG J2534 mode.
- Download and use Techline Connect for diagnostics and programming.
Conclusion
The VXDIAG VCX NANO GM is a powerful device, but improper use of MDI functionality or cracked software can cause issues. By configuring the device correctly and avoiding installing cracked software on the same computer, you can ensure your account remains secure and complete vehicle diagnostics and programming smoothly.
This method is also applicable to the SE, PLUS, and FD series.
