Here’s how to get OnStar for 3 months on us

Woman pressing the OnStar button in her vehicle

Push your blue OnStar button to activate. Cancel anytime.

When you buy a 2015 model year or newer Chevrolet, Buick, GMC or Cadillac vehicle, it comes with an amazing bonus: a complimentary OnStar One trial.* If your vehicle isn't eligible for an in-vehicle OnStar trial, you can experience OnStar features 24/7 with the OnStar Guardian® app* — ready to help on your phone no matter where you are.

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What’s in your trial? Let’s take a look.

Safety, entertainment, mobile app commands and more — discover the suite of features you can try on us.
EMT Walking Towards a Car Crashed on the Side of the Road

Vehicle mobile app*

Start your vehicle, get walking directions to its location, set your ideal cabin temperature and more right from your phone.
Woman reaching to touch her vehicle screen

In-vehicle Wi-Fi® Hotspot*

Stay connected on the go with unlimited data, powering up to seven devices to keep you productive and entertained on every drive.
Police officer walking towards a car crashed on the side of the road

Automatic Crash Response

If you’re in a crash, we’ll check to make sure you’re OK.* We can also tell First Responders your location and what kind of help you need.
Roadside Assistance Worker Assisting Couple with Their Car

Roadside Assistance

Flat tire? Out of gas? No problem. We can get you the help you need to get back up and running.*
A man and woman riding in a vehicle in style

Vehicle Status

Our OnStar Advisors can run an On-Demand Diagnostics* check whenever you need it. If there’s a problem, we’ll help you find the nearest Dealer or service provider or send Roadside Assistance.
Police offeicers approaching a vehicle

Stolen Vehicle Assistance

Car theft is on the rise — but our Advisors can help locate your vehicle and slow it down* when police have it in their sights.
OnStar Advisor at her computer smiling

Safety Services

If you need help, push the red Emergency button* for immediate help from our specially trained Advisors.*

OnStar Guardian app

No matter what curveball life throws at you, trust the OnStar Guardian® app to help with emergencies, roadside trouble or just provide some reassurance — anywhere you need us.*

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Close up of a person holding phone while guardian app is open

Vehicle mobile app

Better vehicle control is at your fingertips. Start your vehicle, get walking directions to it and more — all from your phone.

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Push your blue OnStar button to get started

Activate your trial now. Cancel anytime.
Close up of a woman holding her phone