Contact Us

Use the links on this page to contact us online at anytime or push the blue OnStar button to speak to a trained Advisor, available 24 hours a day, 7 days a week. For assistance with technical concerns, call 1.888.4.ONSTAR (1.888.466.7827), Monday-Friday, 6 a.m.-Midnight (12 a.m.) EST. Online:
Send us an email
Sign up for mailing list
Share your service ideas
By mail:
OnStar Subscriber Services
P.O. Box 430627
Pontiac, MI 48343

You can submit a request in writing for documentation of your OnStar service record. OnStar will respond to you within 5 business days upon receipt of your written request. Send your written request to:

OnStar Corporation
Attention: Records Request
P.O. Box 430627
Pontiac, MI 48343

By telephone:
1.888.4.ONSTAR (1.888.466.7827) TTY Users Only (Deaf, hard-of-hearing, or speech impaired):
Send us an email
1.877.248.2080

---