Audio Steering Wheel ControlsSome audio controls can be adjusted at the steeringwheel. They include the following:> (Mute): Press this button to silence the system.Press this button again, or any other radio button, to turnthe sound on.SRCE (Source): Press this button to switch betweenFM1, FM2, AM, or XM1 or XM2 (if equipped), radio,or CD.g (OnStar/Voice Recognition): If your vehicle hasthe Radio with CD or Radio with Six-Disc CD audiosystem, press this button to interact with the OnStar®system. See the OnStar® manual provided withyour vehicle for more information.If your vehicle has the navigation system, press thisbutton to initiate voice recognition. See “VoiceRecognition” in the Navigation System manual for moreinformation. You may be able to interact with theOnStar ® system using this button. See the OnStar®manual provided with your vehicle for more information.1–6 (Preset Stations): Press this button to playstations that are programmed on the radio presetpushbuttons. The radio will only seek preset stationswith a strong signal that are in the selected band.When a CD is playing, press this button to go to thenext track.When a CD is playing in the six-disc CD changer, pressthis button to go to the next available CD, if multipleCDs are loaded.+ u — (Volume): Press this button to increase or todecrease the volume.3-124