OnStar Hours

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 todayOpening HoursClosing Hours
MondayOpen 24 HoursOpen 24 Hours
TuesdayOpen 24 HoursOpen 24 Hours
WednesdayOpen 24 HoursOpen 24 Hours
ThursdayOpen 24 HoursOpen 24 Hours
FridayOpen 24 HoursOpen 24 Hours
SaturdayOpen 24 HoursOpen 24 Hours
SundayOpen 24 HoursOpen 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

1.888.466.7827

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
Login in to OnStar