Some audio controls can be adjusted at the steering wheel. They include the following:

(OnStar®/Mute): If your vehicle has OnStar, press this button to interact with the OnStar system. See the OnStar® System in this manual for more information. If your vehicle does not have OnStar, press this button to silence the system. Press it again, or any other radio button, to turn on the sound.

PROG (Program): Press this button to play a station you have programmed on the radio preset pushbuttons. The radio will only seek preset stations with a strong signal that are in the selected band. When a CD is playing in the CD changer, press this button to go to the next available CD, if multiple CDs are loaded.

SOURCE : Press this button to switch between FM1, FM2, AM, or XM1 or XM2 (if equipped), or a CD. If a CD is loaded the CD symbol will appear on the display.

SEEK : Press the up or the down arrow to go to the next or to the previous radio station and stay there. The radio will only seek stations with a strong signal that are in the selected band. When a CD is playing, press the up or the down arrow to fast forward or reverse.

VOL (Volume): Press the up or the down arrow to increase or to decrease the volume.