How to Find an OnStar Phone Number

By Alizarin Black

OnStar is a provider of in-vehicle security protection, vehicle navigational systems and hands-free calling. OnStar services are in the United States, Canada and the People's Republic of China. OnStar's Hands-Free Calling is built-in voice-activated call-system vehicle hardware. Hands-Free Calling allows you to send and receive "hands-free" phone calls from your vehicle. You can find your OnStar phone number by using the vehicle hardware.

Step 1

Get in your vehicle.

Step 2

Press the "Phone" button, or white dot, on your OnStar system.

Step 3

Say "My Number" when the OnStar system says "OnStar Ready." The OnStar system repeats your phone number back to you.

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