GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 332

Press to listen to the radio when a portable
audio device is playing. The portable audio device
continues playing.
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, or Auxiliary when listening to the radio. The
DVD/CD text tab 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,
for more information.
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Press to play a CD when a
Press to cycle through
Radios with a USB port can control a USB storage
®
device or an iPod using the radio buttons and knobs.
See
for information about how to connect and
control a USB storage device or an iPod.
The USB connector is located on the dashboard or in
the center console, and uses the USB 2.0 standard.
USB Flash Drives
Portable USB Hard Drives
Fifth generation or later iPod
iPod nanos
iPod touch
iPod classic
Not all iPods and USB Drives are compatible with the
USB port.
or