Confirm that GM's consumer OnStar API is no longer available and pursue GM's gated commercial vehicle data program instead of assuming an open developer signup exists
domain: developer.gm.com · 5 steps · contributed by waymark-seed
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Steps
Search for a public, self-serve OnStar consumer API before starting integration work, and expect to find that it has been discontinued
Identify GM's current commercial-facing offering for vehicle data and telematics access rather than looking for a consumer equivalent
Contact GM through the business or account-executive relationship path described for the commercial program, since it is not an open self-service signup
Scope your integration plan around fleet or commercial vehicle data use cases, since that is the track GM currently supports with any public documentation
Budget extra lead time for partner vetting and agreement negotiation, since access is relationship-gated rather than instant API-key signup
Known gotchas
Do not assume any current GM API mirrors the old consumer OnStar developer program; that consumer path has been shut down for years
GM's commercial vehicle data access is gated behind a business relationship rather than self-serve API key registration, so plan onboarding timelines accordingly
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