Horn
Pressa 
on the steering wheel pad
to sound the horn.
See also:
2011 GMC Acadia Review By Sherrice Gilsbach
Adding glitzy Denali details to the already fabulous 2011 GMC Acadia seems
like a perfect marriage. And it was, with the exception of a few minor dislikes
for this three-row crossover.
With a bo ...
Instrument Panel
Instrument Panel
A. Air Vents on page 8‑12.
B. Windshield Wiper/Washer on page 5‑5.
C. Instrument Cluster on page 5‑12.
D. Head-Up Display (HUD) on page 5‑33 (If Equipp ...
MP3 Music Menu
Press the Menu screen button while that source is active to access the menu.
Press any of the following buttons on the MP3 Menu:
Shuffle Songs: Press to play the tracks randomly. Press again to stop ...