- 1). Press the blue "OnStar" button, located on the OnStar control panel, to be connected with an OnStar representative. The OnStar control panel is often located on the rear-view mirror of the car or on the front console.
- 2). Call OnStar's 24-hour service line at 888-466-7827 (888-4-OnStar) to speak with a customer service representative.
- 3). Dial 877-248-2080 from your TTY device to be connected OnStar's TTY-compatible hotline.
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