GMC Yukon Denali 2005 Manual page 50

If the radio is on while the navigation system is in use,
a smaller band menu will appear, located on the left
side of the map screen. This audio screen will display
the current audio information, such as band and station.
You can touch this smaller band menu screen button
to bring up the full band menu.
FM1 Source shown, Other Sources similar
3-4
e (Audio): Press this hard key to display the audio
menu. Several options are available for adjustment from
this menu.
Base Audio Menu