General Motors announced at its GM Forward event in New York on Wednesday that OnStar — its 30-year-old connected-car service — is being rebuilt around an in-house personal AI assistant. Chief Product Officer Sterling Anderson said 'the intelligence of OnStar will exist everywhere': in the car, on the phone and in the cloud.

The OnStar AI Assistant responds to 'Hey, OnStar,' uses live vehicle data to answer questions and control systems such as climate and the charge port, and is pitched as proactive — for example, noticing a driver will be late, then moving a grocery pickup and alerting others. It will be a subscription service, launching first on the 2027 Cadillac Lyriq via an over-the-air update in the coming months, with more models to follow; human OnStar advisors remain available.

The assistant is proprietary, replacing GM's current reliance on Google's Gemini in its cars. A unified OnStar mobile app planned for 2027 will replace the OnStar Guardian app and the separate Buick, Cadillac, Chevrolet and GMC apps, syncing with the in-car software.