2009 Chevrolet Suburban 2500 Owner's Manual - Page 304

Voice Recognition The Bluetooth system uses voice recognition to interpret voice commands to dial phone numbers and name tags. Noise: Keep interior noise levels to a minimum. The system may not recognize voice commands if there is too much background noise. When to Speak: A short tone sounds after the system responds indicating when it is waiting for a voice command. Wait until the tone and then speak. How to Speak: Speak clearly in a calm and natural voice. Bluetooth Controls Use the buttons located on the steering wheel to operate the in-vehicle Bluetooth system. See Audio Steering Wheel Controls on page 3-138 for more information. b g (Push To Talk): Press to answer incoming calls, to confirm system information, and to start speech recognition. c x (Phone On Hook): Press to end a call, reject a call, or to cancel an operation. Pairing A Bluetooth enabled cell phone must be paired to the in-vehicle Bluetooth system first and then connected to the vehicle before it can be used. See the cell phone manufacturers user guide for Bluetooth functions before pairing the cell phone. If a Bluetooth phone is not connected, calls will be made using OnStar® Hands-Free Calling, if available. Refer to the OnStar owner's guide for more information. Audio System When using the in-vehicle Bluetooth system, sound comes through the vehicle's front audio system speakers and overrides the audio system. Use the audio system volume knob, during a call, to change the volume level. The adjusted volume level remains in memory for later calls. To prevent missed calls, a minimum volume level is used if the volume is turned down too low. 3-116