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Get more connectivity and confidence from your Chevrolet,® Buick,® GMC® or Cadillac.® Activate your 1‑month trial*28 today, and get an elevated vehicle experience at no additional charge. Connectivity is limited to some 2015 model year and newer vehicles that came with 4G LTE hardware or other older vehicles that received a hardware upgrade.

Eligible customers get 2 months on us

When you choose a recurring plan during the first 30 days of your trial, the first 2 months of that plan are on us and begin immediately after your 1-month trial ends.*31 That’s a total of 3 months of services on us!

What’s in your trial?

Peace of mind with the convenience of connectivity

OnStar Safety & Security*3

Drive with added peace of mind knowing OnStar Emergency-Certified Advisors*41 are ready to help 24/7.

  • Automatic Crash Response*12

    Built-in vehicle sensors are designed to automatically alert an OnStar Emergency-Certified Advisor who can notify First Responders on your behalf.

  • Roadside Assistance*13

    Travel with confidence knowing an Advisor can send for help if you have a flat tire, need a tow or run out of gas.

  • Stolen Vehicle Assistance*14

    OnStar Advisors can help pinpoint your vehicle's location and work with authorities as they attempt to recover your vehicle.

  • Crisis Assist*12

    Advisors are available 24/7 to provide critical assistance and special routing during severe weather, a natural disaster or other crisis situation.

  • OnStar Guardian™ app*58

    The OnStar Guardian app gives you added peace of mind anywhere you go by bringing key safety services to your smartphone. You and up to 7 loved ones can get help after a crash in any vehicle, easy access to Roadside Assistance*61 and a 24/7 connection to Emergency-Certified Advisors.

Connected Services*1

Stay connected to your vehicle and the world around you with services that add ease to ownership.

You have options with OnStar

2015 model year and older model year vehicles that required a hardware upgrade to maintain connectivity can still access an OnStar and Connected Services trial if impacted vehicles had that upgrade completed.

If your vehicle did not take part in the hardware upgrade program, you can still get key OnStar safety services on your smartphone by downloading the OnStar Guardian app.

Learn more about the OnStar Guardian app today!