Contact OnStar

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Contact OnStar customer service contact numbers

Phone Number : 1.888.466.7827

Email :

Business Hours: Open 24 Hours a day, 7 days a week

Website :

Corporate Head office: 400 Renaissance Center Detroit, MI 48265

If you want to Contact OnStar customer service & support? There are different ways to get in touch with OnStar. You can contact them via their toll free contact number & this is the best way.

OnStar are available to assist you by telephone, mail, in person at an office, or electronically through the internet at

OnStar Contact Number

1.888.466.7827Customer Service

You can speak with OnStar customer support by calling 1.888.4ONSTAR (1.888.466.7827) number directly.

Speak with a real customer service executive and find fair solution to your problem that is easy & fast. OnStar customer support is available 24 hours a day, 7 days a week.

If you can’t satisfied talking to this number, please contact OnStar on one of the phone number listed below

OnStar Contact/Phone Numbers

Customer service1.888.466.7827
TTY for Hearing/Speech Impaired1.877.248.2080

Best Toll-Free/800 Customer Service Phone Number of OnStar

Call 1.888.466.7827

This is the best customer service phone number that you can use. Using this toll free 800 number, you can directly contact the OnStar customer agent. You can use this number for various tasks such as

  • Account Access
  • Payments
  • Special Assistance
  • Emergency Services
  • Cancel Account
  • Transfer an account
  • Plans & Pricing
  • Locked Out of Vehicle
  • A different issue

OnStar Head Office Contact Number

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

Contacting OnStar – by phone or otherwise

Even though 1.888.466.7827 is a OnStar’s finest toll-free number, there are other 9 great ways of getting in contact with OnStar.

Apart from calling, the upcoming favorite alternative for customers searching for assistance is through online chat support of OnStar.

If you feel this information is wrong or know any other ways to contact OnStar, please let us know so we can discuss with other consumers.

OnStar Email Support

OnStar Email can be a convenient way to communicate with customer service department. You can email OnStar at one of the support email addresses given below.

OnStar Customer Service :

Contact Through Social Media, Website & App

If you want any policy information, file a claim, billing & payment related issues, Try using social media to contact OnStar. Go to their Twitter, Facebook or official Website, and click on the “message” button.

OnStar Live Chat Support

Live chat support is one of the fastest way to contact OnStar . But OnStar does not offer customer support through live chat. You can also connect OnStar with different ways like a Social Media, Email Support, Phone Number.

Business Hours of OnStar

Mon to Friday: 24 Hours open
Saturday : 24 Hours open
Sunday : 24 Hours open

What time does OnStar open and close?
Store hours todayOpening HoursClosing Hours
Monday24 Hours open24 Hours open
Tuesday24 Hours open24 Hours open
Wednesday24 Hours open24 Hours open
Thursday24 Hours open24 Hours open
Friday24 Hours open24 Hours open
Saturday24 Hours open24 Hours open
Sunday24 Hours open24 Hours open

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

New Year’s Day
Martin Luther King, Jr. Day
Memorial Day
Independence Day
Labor Day
Thanksgiving Day
Christmas Day

Get in touch with various departments of OnStar

OnStar customer service

OnStar customer service number is 1.888.466.7827. Dial this number if you have any problem with OnStar Account, Cancel Account, Payment and etc services. Contact their helpline support number that is open 24 hours a day, 7 days a week.

If you are deaf or hard of hearing, call their TTY number, 1.877.248.2080.

Activate or Renew Account

You can manage your account and active connected services online by visiting your vehicle Owner Center or calling 1.888.4ONSTAR (1.888.466.7827).

Cancel Account

If at any time you wish to cancel your OnStar service, push your blue OnStar button to speak with an Advisor or call 1.888.4ONSTAR (1.888.466.7827). You cannot cancel your service online.

OnStar Payment Department

If you have any problem or query regarding this department to visit on Payment department webpage.

OnStar Plan & Pricing Department

If you have any problem or query regarding this department to visit on Payment department webpage.

Hopefully, We helped you to get some genuine Customer Service Phone numbers for OnStar .

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