OnStar is an in-vehicle safety and security system designed to help protect you and your family and provide peace of mind on the road. And now with the OnStar Guardian™ app, you can get key OnStar safety services in and out of any vehicle.

OnStar is available in Chevrolet, Buick, GMC and Cadillac vehicles. Some services may not be available in all vehicles.

Your vehicle purchase includes 6-months* of the Premium Plan* which includes App Access*, Remote Access*, Safety and Security* and Unlimited data*. You can also receive an additional 2 months on us after choosing an OnStar plan.

If you recently purchased a new 2024 or 2025 model year vehicle, please log in to your account to view the latest trial information impacting your vehicle, as many models include extended trials of some OnStar features and services.

OnStar-equipped pre-owned vehicles model year 2015 or newer can get up to 3 months on us of the Premium Plan* which includes App Access*, Remote Access*, Safety and Security* and Unlimited data*. 

Please note that all services may not be available. Check with your Cadillac Dealer for details.

If you recently purchased a 2024 or 2025 model year vehicle, please log in to your account to view the latest trial information impacting your vehicle, as many models include extended trials of some OnStar features and services.

The OnStar Safety & Security Plan is available for $32.99 a month. Plus any applicable taxes & fees. 

You can manage your account and connected services online by visiting your Cadillac account, pushing your blue OnStar button in your vehicle and speaking with an Advisor, or calling 1.888.4ONSTAR (1.888.466.7827).

You can visit your Cadillac account to start the activation process, or get help from an Advisor by pushing your blue OnStar button in your vehicle or calling 1.888.4ONSTAR (1.888.466.7827). You can activate or change services anytime, and if you are enrolled in a trial plan, your paid OnStar service plan will be added to the time remaining in that plan.

If at any time you wish to cancel your OnStar service, push your blue OnStar button to speak with an Advisor or call 1.888.4ONSTAR (1.888.466.7827). If you let your service plan expire or choose to cancel it, your OnStar system will be deactivated. All services — including Automatic Crash Response and Emergency Services — will be shut off. Your vehicle won’t be able to connect with us for help, even in a crash.

You may transfer your OnStar service plan if:

• You have an active, customer-paid OnStar service plan and account.
• The primary driver does not change.
• The new vehicle is equipped with OnStar hardware.

If you still own the vehicle listed on your service plan, the plan cannot be switched to a different driver. Any service plan included with your vehicle purchase remains with the vehicle if it is sold or traded in with an active OnStar trial.

The OnStar Safety & Security Plan includes these services:

• Automatic Crash Response with Injury Severity Prediction
• Emergency Services, including a priority connection to an OnStar Emergency-Certified Advisor
• Crisis Assist
• Stolen Vehicle Assistance, including Remote Ignition Block,™ Stolen Vehicle Slowdown^® (if capable) and Theft Alarm Notification
• Turn-by-Turn Navigation with Destination Download (if available)
• Roadside Assistance
• OnStar Guardian app

You can visit the Plans page or your Cadillac account to learn more about OnStar services.