In Brief
OnStar®
In this manual: In Brief
~1min read
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview on page 14‑1 for more information.
Test yourself
A quick GMC Sierra quiz: every answer comes with an explanation and a link to the manual page.
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