If you need to speak to a live customer service representative in OnStar customer service you need to dial 1-888-466-7827. To speak with a live agent, you need to stay on the line (typical waiting time is about 5-10 minutes).

Alternatively you can use the following other options available in the customer service phone menu:

• For emergencies, roadside assistance, door unlocked or stolen vehicle missing person press 1.
• For service plan maintenance including purchase data plans and free calling minutes or to renew your service plan billing and cancellation inquiries press 2.
• For technical assistance press 3.

OnStar Customer Service Hours

Live customer service representatives from OnStar are available 24/7.

OnStar Customer Support Phones

• OnStar Customer Support Phone is 1-888-466-7827. Live customer service representatives from OnStar are available 24/7.
• For TTY for Hearing/Speech Impaired you need to dial 1-877-248-2080.

OnStar Social Networks Customer Service

• OnStar customer service could be contacted via OnStar Facebook page. Typically OnStar customer service representative replies within an hour.
• You can also reach OnStar support via OnStar Twitter page
• You can view latest OnStar photos on OnStar Instagram page
• You can view latest OnStar videos on OnStar Youtube page

OnStar Mailing Addresses

OnStar Member Services:
PO Box 1027
Warren, MI 48090-1027

Payments:
Dept #77246
OnStar Service Plan Center
PO Box 77000
Detroit, MI 48277-0246

OnStar Live Chat Support

OnStar doesn’t offer live chat support. The best way to contact OnStar is to call them at 1-888-466-7827.

OnStar support e-mail

OnStar doesn’t offer live support via e-mail.

OnStar Help Center

• You can get more information about OnStar Customers on the OnStar Customers Support page.

OnStar Opening Hours

Available 24/7.