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.

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Type: Diagnostic software
Developer: General Motors
Includes: GDS2, SPS2, service information
Access: ACDelco TDS subscription
Best for: GM specialists and independents
Operating systems: Windows
Protocols: CAN (ISO 15765-4), SAE J2534 pass-thru
Connection: USB, Wi-Fi
Licensing: OEM / dealer licence
Indicative price: Subscriptions listed on ACDelco TDS; users report about $45 per VIN for programming Checked Nov 2026. Price source ↗ Varies by country, tax and plan.
Status: Active
Verification: UnverifiedCommunity-created information that staff have not reviewed yet.

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