See also:

Setting the Tone (Bass/Midrange/Treble)
BASS/MID/TREB (Bass, Midrange, or Treble): To adjust bass, midrange, or treble: 1. Press until the tone control tabs display. 2. Continue pressing to highlight the tab, or press the softkey under ...

Online Owner Center
GMC Owner Center (U.S.) www.gmcownercenter.com Information and services customized for your specific vehicle — all in one convenient place. • Digital owner manual, warranty information, and more ...

Lumbar Adjustment
Power Lumbar Eight-Way Power Seat Shown, Four-Way Similar A. Lumbar Switch If available, press and hold the front or rear of the switch (A) to increase or decrease lumbar support. Release the s ...