1 day ago · Stay connected and protected with OnStar®. Discover 24/7 safety, navigation, roadside assistance & in-vehicle Wi-Fi for your Chevrolet, Buick, GMC, or Cadillac.

If your vehicle is eligible, you’ll be able to lock or unlock your car, remotely start your vehicle, see it’s location, check the status of it’s health, open your trunk and turn on the lights — all from …

OnStar Services Wherever You Are With the OnStar Guardian app Thanks to OnStar, you may feel safer in your car. But how about when you or your family are in someone else’s car? Or on your …

1 day ago · Vehicle mobile app Better vehicle control is at your fingertips. Start your vehicle, get walking directions to it and more — all from your phone.

Start a live chat. Need an answer quick? Our Advisors are anywhere you are — including online. Your OnStar Customer Service team is ready to help you with anything you need, whether it’s …

1 day ago · app, you can start your vehicle, set your ideal cabin temperature and more — all from your phone. You can also easily find your vehicle and get walking directions to its location.

OnStar wants to help any and all Members with all potential system and service issues. Check out our help and support articles for more information.

Start your trial today! Push your blue OnStar button to activate. Cancel anytime.

Sep 10, 2025 · From the myChevrolet, myGMC, myBuick, or myCadillac mobile app, they can lock/unlock, remote start, and locate their vehicle, as well as get on-demand diagnostics and …

4 days ago · Enjoy a better drive with OnStar tech Better drives start here Real-time maps help shave time. Hands-free driving adds ease. Built-in voice assistance makes staying connected a …