If your vehicle has this feature, 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 that has been programmed on the radio preset pushbuttons. The radio seeks preset stations only 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 the SOURCE arrows to switch between FM1, FM2, AM, or XM1 or XM2 (if equipped), or a CD. If a CD is loaded the CD symbol displays.

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

VOL (Volume): Press the VOL arrows to increase or to decrease the volume.