The latest GM Dealer Infrastructure & Security Guidelines (DISG) have been updated with recommended firewall exceptions for Techline Connect applications. (Fig. 1)
The following exception has been added and needs to be able to run not only in the path listed but any location on the PC as noted.
C:\ProgramData\sps\sps3\nativeLib\summary-builder.exe
summary-builder.exe needs to be added as a wildcard to run in any filepath.
For proper operation of Techline Connect apps, Local Windows Administrative access for software installation and updates is required. The recommended firewall and security exceptions help protect from loss, theft and unauthorized access. GM also recommends using privilege management software to manage user rights without needing to give full administrator rights to an individual user.
Fig. 1
Recommended Applications
In addition, the DISG lists recommended PC hardware, software applications and network infrastructure to ensure communication between dealership PCs and GM servers. The guidelines cover requirements for the Service Programming System (SPS) to ensure a successful outcome while programming vehicles.
Techline applications (Techline Connect, GDS 2, MDI Manager, MDI/MDI 2, Tech2Win, Data Bus Diagnostics Tool, J2534 Wrapper and Service Information) require additional computing power to perform appropriately during vehicle diagnosis and programming.
The following recommendations are for all service technician applications:
- Local Windows Administrative access for software installation and updates to Windows registry
- One laptop for each technician performing service programming and vehicle diagnostics; otherwise, one for every two technicians
- One MDI 2 for every Techline PC
- One battery maintainer for every two MDI tools in use
- Use of Tripp-Lite Keyspan USB-to-serial adapter (Model: USA – 19HS or USA – 19HS-C) for computers without serial ports
- Recommended Service Programming USB standard for Legacy Vehicles is FAT 32 – File Allocation 4096 (64KB), Size 16 or 32 GB USB 2.0 and USB-C 3.X
- Recommended Service Programming USB standard for Vehicles with RPO IVD & IVE (Virtual Cockpit Infotainment Systems) is NTFS File Format, Size 32 GB or greater USB-C 3.X (no adapters recommended)
Supported vs. Not Supported Hardware and Software
The Supported vs. Not Supported matrix includes guidelines for hardware (Enterprise-grade hardware intended for a business environment is recommended) and software used by all departments in the dealership. (Fig. 2)
The new DISG notes that GM support for Windows 10 Professional will be dropped as of October 14, 2025.
Windows 11 Professional and Windows Server 2019 Standard are the recommended operating systems for new PCs.
Fig. 2
View the New Guidelines
U.S. dealerships – The latest DISG can be found in the GM Dealer Information Technologies App on GM Global Connect. Select the Dealer Infrastructure & Security Guidelines link at the top of the app’s home page. The DISG also is available on the Service Information home page.
Canadian Dealerships – The latest DISG can be found in the Dealer Security and Information Technology App on GM Global Connect.
– Thanks to Chris Henley
