OnStar Business Hours
If you want to connect with the OnStar customer service department, you can reach out by phone, email, through social media. Today, we will discuss about OnStar hours of operation that includes OnStar opening hours, closing, holiday hours and closing business hours.
OnStar Regular Business Hours
Weekdays: The customer service department is open 24 hours
Weekends: The customer service department is open 24 hours
And their automated telephone service is available 24/7.
What time does OnStar open and close?
| Store hours today | Opening Hours | Closing Hours |
| Monday | Open 24 Hours | Open 24 Hours |
| Tuesday | Open 24 Hours | Open 24 Hours |
| Wednesday | Open 24 Hours | Open 24 Hours |
| Thursday | Open 24 Hours | Open 24 Hours |
| Friday | Open 24 Hours | Open 24 Hours |
| Saturday | Open 24 Hours | Open 24 Hours |
| Sunday | Open 24 Hours | Open 24 Hours |
OnStar Holiday Hours
OnStar customer service is open on most public holidays. Our self serve functions are available 24/7.
Christmas Day and Easter Sunday: Closed
What time does OnStar close?
Public Holidays
Contact Information
Contact by phone
The helplines are open 24/7 hours
Corporate Head office address of OnStar
400 Renaissance Center Detroit, MI 48265
For any general inquiries, please contact OnStar head office number : (248)588-6050
For additional information, please visit the OnStar website: onstar.com/us/en/home.
Other Ways to Contact OnStar
All Contacts of OnStar
OnStar Phone Number
OnStar Customer Service
Contact OnStar Through Social Media
OnStar Email Support
Help Pages Support
OnStar Corporate Office
Make Complaint to OnStar
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