GMC 2007 Acadia Owner's Manual page 287

RDM (Random): With the random setting, the
tracks can be listened to in random, rather
than sequential order. To play the tracks from the
CD, press the DVD/CD AUX button when not
sourced to the CD, or insert a disc partway into
the slot. A RDM label displays. Press the
pushbutton positioned under the RDM label until
Random Current Disc displays. Press the
pushbutton again to turn off random play.
BAND: Press this button to listen to the radio
when a CD or DVD is playing. The CD or
DVD remains inside the radio for future listening
or viewing entertainment.
DVD/CD AUX (Auxiliary): Press this button to
cycle through DVD, CD, or Auxiliary when listening
to the radio. The DVD/CD text label and a
message showing the track or chapter number
displays when a disc is in either slot. Press
this button again and the system automatically
searches for an auxiliary input device, such as a
portable audio player. If a portable audio player
is not connected, "No aux input device" displays.
If a disc is in both the DVD slot and the CD
slot the DVD/CD AUX button cycles between
the two sources and not indicate "No aux input
device". If a front auxiliary device is connected, the
DVD/CD AUX button cycles through all available
options, such as: DVD slot, CD slot, Front
Auxiliary, and Rear Auxiliary (if available).
See "Using the Auxiliary Input Jack(s)" later in
this section, or "Audio/Video (A/V) Jacks" under,
Rear Seat Entertainment System on page 311
for more information.
If a disc is inserted into top DVD slot, the rear
seat operator can turn on the video screen
and use the remote control to navigate the
CD (tracks only) through the remote control.
Audio Output
Only one audio source can be heard through
the speakers at one time. An audio source
is defined as DVD slot, CD slot, XM™, FM/AM,
Front Auxiliary Jack, or Rear Auxiliary Jack.
Press the power button to turn the radio on.
The radio can be heard through all of the
vehicle speakers.
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