OnStar Corporate Office

OnStar Headquarters Info

OnStar was formed in 1996 as a collaboration between GM, Electronic Data Systems and Hughes Electronics Corporation.

If you need to contact OnStar corporate office, the best phone number to call is their support hotline at (248)588-6050. The OnStar headquarters in 400 Renaissance Center Detroit, MI 48265.

OnStar Contact Information

OnStar headquarters address: 400 Renaissance Center Detroit, MI 48265

Company website: onstar.com/us/en/home

Head Office phone number: (248)588-6050

OnStar Customer Service Number: 1.888.466.7827

Support email address: contactus@onstar.com

Customer service hours: Open 24 hours a day, 7 Days a week

OnStar Headquarters Executive Team

  • Mary T. Barra: Chairman and Chief Executive Officer
  • Daniel E. Berce: Senior Vice President and President and Chief Executive Officer, GM Financial
  • Kimberly (Kim) J. Brycz: Senior Vice President, Global Human Resources
  • Craig Buchholz: Senior Vice President, Global Communications
  • Stephen (Steve) K. Carlisle: Executive Vice President and President, North America
  • Margaret Curry: Vice President, Tax and Chief Tax Officer


Why is OnStar being discontinued?
The reason for this change is the upgrade of cellular carriers from a 2G network to a 4G or 5G connectivity. As older GM vehicles use a 2G connection, these cars will lose their in-car OnStar services. In the US, most major network providers will complete the transition from the 2G network in December 2022.

What services do I get with OnStar?
Welcome to OnStar. Where you can get Roadside Assistance* or navigation when you need it, Emergency Services* 24/7, and a vehicle mobile app* that connects you to your car from anywhere. You’ll even discover hands-free driving with Super CruiseTM* and OnStar Smart Driver* to help you boost your safe driving skills.

Can I get OnStar for free?
Here’s how: It starts with your free 30-day OnStar® trial. You’re going to love the experience. So during that 30 days, choose a monthly renewing plan. When you do, the next two months of that plan are complimentary for eligible vehicles* — it will start right after your 1-month trial ends.

Is OnStar exclusive to GM?
Since 2014 OnStar offers LTE Wi-Fi service on select GM cars. Starting June 14, 2021, the OnStar Guardian app was made available to any driver in the United States or Canada.

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 by jolly on OnStar

My cell phone and banking information was stolen by an employee who was working with me. I had no way to contact my bank so
I figured Onstar. Could help. Thankfully Kevin at Onstar helped me. Thank you so much