
Yes, you can remote start your car with OnStar, provided your vehicle is equipped with the necessary hardware and you have an active OnStar or connected services plan. This feature is a cornerstone of modern vehicle connectivity, allowing you to start your engine from a distance using the myChevrolet, myGMC, or myCadillac mobile app, or by pressing the blue OnStar button in your vehicle and requesting an advisor to start it for you.
The primary benefit is climate control preconditioning. On a cold morning, you can warm up the cabin and defrost the windows, or on a hot day, cool the interior before you get in. The system also activates the defroster, heated seats, and steering wheel if your vehicle is so equipped. It's important to note that the vehicle remains locked during a remote start, providing a secure environment.
However, there are key requirements and limitations. The remote start function via the app is tied to a specific subscription tier, often called a "Remote Access Plan" or "Connected Services Plan." If your complimentary plan has expired, you'll need to subscribe. The vehicle must also have an active cellular connection for the app command to work. Furthermore, the engine will typically run for a maximum of 10 to 20 minutes before automatically shutting off if no one enters the vehicle with the key fob.
| Feature/Aspect | Details |
|---|---|
| Activation Methods | Mobile App, Key Fob (on some models), OnStar Advisor |
| Typical Subscription Plan | Remote Access Plan (often ~$14.99/month) |
| Standard Run Time | 10-20 minutes |
| Vehicle Security | Doors remain locked during remote start |
| Range | Virtually unlimited, requires cellular signal |
| Compatible Systems | OnStar, Connected Services |
Ultimately, the convenience is significant, but it's a paid feature beyond the initial new-vehicle trial period. Check your specific vehicle's capabilities and your current OnStar subscription status in your account to confirm access.


