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Contact UsUse 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 PO Box 1027 Warren, MI 48090-1027 You can submit a request in writing for documentation of your OnStar service record. OnStar will respond to you within 12 business days upon receipt of your written request. Send your written request to: OnStarAttention: Records Request PO Box 1027 Warren, MI 48090-1027 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
Share your OnStar story. If you have a real story about getting help from OnStar, please tell us about it now. You can also read other Real Stories here.
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