Renew your subscription, purchase minutes and update your account profile at OnStar.com
We recently sent the 100-millionth OnStar Vehicle Diagnostics1 email. It marked a milestone for the service, which gives subscribers peace of mind and can also help save them money on vehicle maintenance and fuel costs.
If you have any questions or concerns about your OnStar service you can reach us 7 days a week, 24 hours a day, by calling 1.888.4.ONSTAR.
OnStar services require vehicle electrical system (including battery), wireless service and GPS satellite signals to be available and operating for features to function properly. OnStar acts as a link to existing emergency service providers. Subscription Service Agreement required. Call 1.888.4.ONSTAR (1.888.466.7827) or visit onstar.com for OnStar Terms and Conditions, Privacy Statement and details and system limitations.
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