See also:

Dual Tone Multi-Frequency (DTMF) Tones
The in-vehicle Bluetooth system can send numbers during a call. This is used when calling a menu-driven phone system. 1. Turn the Menu knob to select Enter Number, then press SELECT. 2. En ...

Pairing
A Bluetooth-enabled cell phone must be paired to the Bluetooth system and then connected to the vehicle before it can be used. See your cell phone manufacturer's user guide for Bluetooth fun ...

OnStar®
For vehicles with an active OnStar subscription, OnStar uses several innovative technologies and live Advisors to provide a wide range of safety, security, navigation, diagnostics, and calling servi ...