General Motors is adding a personal AI assistant to OnStar as part of a broader makeover of the subscription-based connected car service that the U.S. automaker launched 30 years ago.

The OnStar AI Assistant will debut in the 2027 Cadillac Lyriq EV in the coming months, with more GM vehicles to follow, the company said Wednesday at its GM Forward event in New York, where it made a series of other technology announcements covering software, automated driving, EVs, and its electrical architecture. The company said it will launch a new OnStar mobile app in 2027 that will complement and sync up with its in-car software.

The new OnStar mobile app will replace the current OnStar Guardian app that launched in 2020 as well as vehicle brand apps for Buick, Cadillac, Chevrolet, and GMC.

This tech-centric reboot is unlike other attempts to modernize OnStar, and it notably puts agentic AI at the center.…