GMC 2018 Acadia Denali Owner's Manual page 173

172 Infotainment System
1. Press .
2. Touch AUDIO.
3. Touch Source.
4. Touch USB.
To stop the USB device and select
another media source, touch
Source, then select the other
source.
To remove the USB device, select
another function, then remove the
USB device.
Pause
Touch to pause.
Touch to resume.
Changing to the Next/Previous
Files
Touch to change to the
next file.
Touch within five seconds of
the playback time to play the
previous file.
Returning to the Beginning of the
Current File
Touch after five seconds of the
playback time.
Scanning Forward or Backward
Touch and hold or
playback to rewind or fast forward.
Release the button to resume
playback at normal speed.
Playing a File Randomly
Z
Touch during playback.
ON: Plays all files randomly.
OFF: Returns to normal
playback.
Using the USB Music Menu
Touch Menu during playback.
Touch the desired menu.
Browse Music
1. Touch Browse Music.
2. Touch the desired music.
Tone Settings
during
Touch Tone Settings. The Tone
Settings menu is displayed. See
Tone Settings under Radio
Controls in Operation 0 166.
Auto Volume
Touch Auto Volume. The Auto
Volume menu is displayed. See
Auto Volume under Radio
Controls in Operation 0 166.
Traffic Program (If Equipped)
Touch On or Off.
MTP (Media Transfer Protocol)
Connect an MTP supported
device.
Play will start automatically after
the system has finished reading
the MTP device.