DiagBox
Diagnostic software
PSA (now Stellantis) dealer diagnostic software for Peugeot, Citroën, DS and PSA-based Opel models.
Independent access from €46.20 per VIN (token) or €14.65 per hour (April 2026 tariff)
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Diagnostic software
Unverified
GM Techline Connect
Also known as GDS2, Service Programming System, SPS2, Techline Connect and TLC
General Motors’ dealer platform, bringing together GDS2 diagnostics, SPS2 programming and service information.
By General Motors · Independent community profile — not affiliated with the manufacturer.
About GM Techline Connect
Techline Connect is the application GM dealers and independent workshops use to reach GDS2 (diagnostics), SPS2 (programming) and service information.
Supported vehicles
- GM brands such as Chevrolet, GMC, Cadillac and Buick. GDS2 covers about 2010 onward global-architecture vehicles.
- Older vehicles use the Tech 2 scan tool and its software.
What it can do
- Module fault codes, data displays, output controls and configuration with GDS2.
- Module programming with SPS2, using calibrations downloaded from GM.
Subscription
- Sold through ACDelco TDS, either as a full subscription or per VIN for programming. Users report recent per-VIN increases to about $45.
Hardware
- The MDI 2 is the reference interface. GM says standard J2534 devices also work.
Limitations
- Needs a stable internet connection and battery support during programming.
- Clone MDI units often fail on current releases.
Good to know
Per-VIN programming makes a one-off module replacement affordable for a small workshop. OBD4 does not provide software, licences or downloads.
Hardware you need
Interfaces that connect GM Techline Connect to the car. Official means required or supplied by the software maker.
Capabilities & coverage
Key capabilities
- Adaptations
- Coding
- ECU flashing
- Guided diagnostics
- Live data
- Output tests
- Read & clear fault codes
Vehicle brands
Compatibility note: coverage listed here is a summary of community-submitted information that staff have not yet reviewed. It is not a guarantee for a specific vehicle, model year or software version. Always check the manufacturer's documentation.
Recent community activity
Ask about GM Techline ConnectNo publications about GM Techline Connect yet
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