See also:

Automatic Dimming Rearview Mirror with OnStar® and Compass
Your vehicle may have an automatic-dimming rearview mirror with a compass and the OnStar® system. There are three additional buttons for the OnStar® system. See your dealer for more informatio ...

Customer Assistance for TextTelephone (TTY) Users
To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Buick has TTY equipment available at its Customer Assistance Center. Any TTY user can comm ...

Playing a CD or MP3 CD (Radio with CD and Touchscreen)
Press the TUNE/MENU knob to display the CD Menu. Shuffle: Select to play the tracks randomly rather than in sequence. Select again to stop shuffle. A checkmark indicates shuffle is on. Track List: ...