GMC CHEVROLET Silverado 6500HD 2019 Owner's Manual page 146

five seconds, it seeks the
previous track. If longer
than five seconds, the
current track will start from
the beginning. Press
seek the next track.
AM, FM, or SiriusXM (If
Equipped): Press
to seek to the previous or
next strong station.
CD (If Equipped): Press
and hold to quickly
reverse through a track.
Release the button to return
to playing speed. Press and
hold to fast forward
through a track. Release
the button to return to
playing speed.
10. RADIO
Press to change the audio
source between AM, FM,
or SiriusXM, if equipped.
11. MEDIA
Press to change the audio
source between CD, USB,
AUX, and Bluetooth Audio,
to
if equipped.
12.
Press to turn the audio on.
or
Press and hold to turn it off.
When on, press to mute the
system. Press again to
unmute.
Turn to increase or
decrease the volume.
Infotainment System 145