You can avail of OnStar customer support via an online help center. OnStar customer service is available 24/7 through the website. It helps with OnStar connected devices, guardian apps, account access, product updates, technical support, OnStar login, order and payments, and other services.
OnStar offers a mobile app for its customer support. The OnStar guardian app is available only for android and Apple users. It helps with downloads, product updates, technical support, OnStar connected devices (you can share OnStar Guardian with up to 7 at a time), and 3-month free app service. You can also contact OnStar customer care via the mobile app, available 24/7.
Another way to avail of OnStar customer support is via email. OnStar customer service email is info@gm.com. You can also mail infotainment@gmexpert.com (for OnStar general info) and privicy@gm.com (OnStar privacy and security support).
OnStar Customer Support Phone Number
The best way to contact OnStar customer care is via the phone number. OnStar customer support toll-free number is 1 888 466 7827. You can also call 1 877 248 280 and 1 877 865 7864 (for OnStar TTY customers support), and 1 866 697 7482 (OnStar legal support. Call-back service is not available on all the above numbers. OnStar customer service hours are 24/7. But the best time to call is at 2:00 pm EST.
OnStar customer support offers a live chat. The OnStar customer service chat is a live chatbot through which you can contact with OnStar agent, available Monday through Saturday from 7:00 am to 9:00 pm EST. It helps with account access, activating/cancelling service, technical support, OnStar login, locked-out of vehicle, special assistance, updating account info, payments, and other services. You can also chat with OnStar customer support via the following social accounts;
Facebook: https://www.facebook.com/onstar
Twitter: https://twitter.com/OnStar
Instagram: https://www.instagram.com/onstar
Pinterest: https://www.pinterest.com/OnStar/_created
YouTube: https://www.youtube.com/onstar
If you are a Twitter or Facebook user, you can avail of the fastest OnStar Customer service. Submit an entry form through the app or website. Send a tweet or messenger text to Facebook and Twitter OnStar customer care, and you will get a reply in a few minutes. It is available 24/7.