Sign up for OnStar Continuous Coverage, and we’ll automatically bill the payment method you have on file each month, ensuring uninterrupted OnStar service. To enrol in Continuous Coverage, you need to associate a credit card, PayPal account or automatic debit to your account. You can modify or remove your payment method from your account at any time by calling 1.888.4ONSTAR (1.888.466.7827), pushing your blue OnStar button, or by visiting your GM account.