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The OnStar® Guardian™ App provides Members with 24/7 access to Emergency Services — they have a specially trained OnStar Advisor ready to help them. 


With the OnStar Guardian app, a Member can get assistance with medical emergencies or personal safety situations in or out of any vehicle. An OnStar Emergency-Certified Advisor is ready to help 24/7. They can assist Members with situations such as panic attacks, allergic reactions, chest pains and more — even situations where they feel unsafe.

Pushing the red Emergency button in the OnStar Guardian app gives Members priority access to an Emergency-Certified Advisor. These Advisors are specially trained to assist during a medical emergency. They can also contact First Responders, providing them with your precise location. The Advisor will also stay on the line with the Member until help arrives.

OnStar Guardian can also be used when a Member feels they are in personal danger or an unsafe situation.

The Emergency button in OnStar Guardian can also be used to help others in need. If a Member witnesses an event such as a vehicle crash, they can act as a Good Samaritan and request help on another person’s behalf.

If you are in immediate danger, you should always call 911.


Is the OnStar Guardian app still working if I don’t see a notification on the app?

Once you’re logged into the OnStar Guardian app, it will remain active and functional in the background until you log out, even if you close the app. If you don’t see notifications while on your drive, then once the vehicle is in a parked state, you must enable notifications for the Guardian app in the system preferences on your device.



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Information on this page is specific to the Buick models below. If your vehicle is not on the list or these instructions don't apply, then please see your Owner's Manual.

  • Cascada 2016-2019
  • Enclave 2010-2021
  • Encore 2012-2021
  • Encore GX 2019-2021
  • Envision 2014-2021
  • LaCrosse 2010-2019
  • Lucerne 2010
  • Regal 2010-2017
  • Regal Premium 1 2014
  • Regal Sportback 2018-2020
  • Regal TourX 2018-2020
  • Verano 2012-2017

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