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

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