GMC 2009 Sierra - Manual (Page 233)

BAND: Press to listen to the radio when a portable
audio device is playing. The portable audio device
continues playing, so you might want to stop it or
turn it off.
CD/AUX (CD/Auxiliary): Press to play a CD when a
portable audio device is playing. Press again and
the system begins playing audio from the connected
portable audio player. If a portable audio player is
not connected, “No Input Device Found” displays.
DVD/CD AUX (CD/Auxiliary): Press to cycle through
DVD, CD, or Auxiliary when listening to the radio.
The DVD/CD text label and a message showing track or
chapter number displays when a disc is in either slot.
Press 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 (RSE) System on page 3-109 for more
information.
Using an MP3
(Radio with Six-Disc Player)
MP3 CD-R or CD-RW Disc
The radio plays MP3 files that were recorded on a
CD-R or CD-RW disc. The files can be recorded with
the following fixed bit rates: 32 kbps, 40 kbps, 56 kbps,
64 kbps, 80 kbps, 96 kbps, 112 kbps, 128 kbps,
160 kbps, 192 kbps, 224 kbps, 256 kbps, and 320 kbps
or a variable bit rate. Song title, artist name, and
album are available for display by the radio when
recorded using ID3 tags version 1 and 2.
Compressed Audio
The radio also plays discs that contain both
uncompressed CD audio (.CDA files) and MP3 files.
By default the radio shows the MP3 label on the left side
of the screen but plays both file formats in the order
in which they were recorded to the disc.
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