OnStar One unlocks the full OnStar experience: every safety feature, seamless connectivity, and in-vehicle entertainment, all in one plan.
Vehicle Eligibility
Your OnStar One plan duration varies by vehicle type and model year.
New Vehicles
2026 model year and newer
12 months of OnStar One
New Vehicles
2025 model year and older
1 month of OnStar One
MY25 and newer Cadillac and select Buick, GMC and Chevrolet New Vehicles receive 3 years of OnStar One
Pre-owned vehicles
Any model year
1 month of OnStar One
Vehicle Eligibility
Your OnStar One plan duration varies by vehicle type and model year.
New Vehicles
2026 model year and newer
12 months of OnStar One
New Vehicles
2025 model year and older
1 month of OnStar One
MY25 and newer Cadillac and select Buick, GMC and Chevrolet New Vehicles receive 3 years of OnStar One
Pre-owned vehicles
Any model year
1 month of OnStar One
What’s included in OnStar One?
Safety, entertainment, mobile app commands and more.
What’s included in OnStar One?
Safety, entertainment, mobile app commands and more.
Vehicle mobile app
Start your vehicle, get walking directions to its location, set your ideal cabin temperature and more right from your phone.*
In-vehicle Wi-Fi® Hotspot
Stay connected on the go with unlimited data, powering up to 18 devices to keep you productive and entertained on every drive.*
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
Flat tire? Out of gas? Fender-bender? Need a tow? No problem. We can get you the help you need to get back up and running.*
Vehicle Status
Check your vehicle’s tire pressure, oil life, fuel level and more from your smartphone. Plus, easily schedule service with the tap of a button.
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.
Vehicle mobile app
Start your vehicle, get walking directions to its location, set your ideal cabin temperature and more right from your phone.*
In-vehicle Wi-Fi® Hotspot
Stay connected on the go with unlimited data, powering up to 18 devices to keep you productive and entertained on every drive.*
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
Flat tire? Out of gas? Fender-bender? Need a tow? No problem. We can get you the help you need to get back up and running.*
Vehicle Status
Check your vehicle’s tire pressure, oil life, fuel level and more from your smartphone. Plus, easily schedule service with the tap of a button.
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.
Core benefits included on eligible vehicles
Have a 2025 model year or newer vehicle?
Included with your vehicle purchase comes OnStar Basics for up to 8 years, including core features designed to keep you connected on and off the road.
Getting started
Activating complimentary OnStar One is as easy as opening an app.
Step 1
Download and/or sign into your vehicle app.
Step 2
Add or select your vehicle.
Step 3
Complete the activation from inside your vehicle.