How to Cancel Your OnStar Service

15 Dec

You can cancel your OnStar service by calling OnStar customer support toll free at 1-888-4-ONSTAR (1-888-466-7827). Let the customer support agent know that you wish to cancel your service, and provide any necessary information that the agent asks for.

If you have paid for OnStar service in advance, you are eligible for a partial refund.


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