See also:

Setting the Tone (Bass/Midrange/Treble)
AUDIO: Push and release the AUDIO knob until BASS, MID (midrange) (without Bose®), or TREB (treble) displays. Turn the knob to increase or to decrease the tone. The display shows the bass, midran ...

Service
For service and parts needs, visit your dealer/retailer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...

Roadside Assistance Program
U.S.: 1-800-252-1112 TTY Users: 1-888-889-2438 Canada: 1-800-268-6800 As the owner of a new Buick, you are automatically enrolled in the Roadside Assistance program. This program provides techn ...