GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 325

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 button to turn the radio on. The radio can
be heard through all of the vehicle speakers.
Front seat passengers can listen to the radio
(AM, FM, or XM) by pressing the BAND button or
the DVD/CD AUX button to select CD slot, DVD slot,
front or rear auxiliary input (if available).
If a playback device is plugged into the radio s front
auxiliary input jack or the rear auxiliary jack, the front
seat passengers are able to listen to playback from
this source through the vehicle speakers. See Using
the Auxiliary Input Jack(s) later in this section,
or Audio/Video (A/V) Jacks under,
information.
In some vehicles, depending on audio options, the rear
speakers can be muted when the RSA power is turned
on. See
information.
The Radio with CD (MP3), Radio with USB and CD
(MP3), and Radio with USB and Six-Disc CD (MP3)
have the capability of playing an MP3 CD-R or CD-RW
disc. For more information on how to play an MP3 CD-R
or CD-RW disc, see
Radios with CD and DVD has the capability of playing
an MP3/WMA CD-R or CD-RW disc. For more
information on how to play an MP3/WMA CD-R or
CD-RW disc, see
for more
for more
or
for more information.
or
for more information.
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