How Do I Activate OnStar?

Activation for New Vehicles

All new GM models include a one-year OnStar service plan.

For select new 2004 and all 2005 and 2006 GM models, Automatic Air Bag Deployment Response, Emergency Services, and Stolen Vehicle Assistance are active when you take delivery of the vehicle. The remaining services are typically activated automatically within 3 to 5 business days after you take delivery.
For select new 2004 and previous models, you will need to activate your OnStar system by pushing the blue OnStar button in your vehicle. If you hear the recorded message, follow the prompts to speak to an Advisor.

Activation for Pre-Owned Vehicles

In order to activate OnStar, your vehicle must be equipped with digital hardware. Click here to determine if your OnStar is digital.

Push your blue OnStar button
Note: Your vehicle may be inactive and it may take an extended period to connect with OnStar the first time you push the blue OnStar button.
When prompted, say “Advisor”
Be sure to mention the Three Months On Us Trial or if you have a Certified Pre-Owned Cadillac mention the six month offer
Your OnStar system will be active immediately, once the call is done