: GM has phased out Hands-Free Calling in many newer models in favor of in-vehicle data plans and smartphone integration (Apple CarPlay/Android Auto). If your vehicle is very new, you may need a Connected Vehicle Plan instead of traditional "minutes".
: Most Hands-Free Calling minutes require an active OnStar subscription plan to function. buy onstar minutes
: The easiest way is to press the blue OnStar button in your vehicle. You will be connected to an OnStar Advisor who can add minutes to your account immediately. : GM has phased out Hands-Free Calling in