Hummer 2009 H2 - Manual (Page 283)

Rear Seat Audio (RSA)
Vehicles with this feature allow the rear seat passengers
to listen to and control any of the music sources: radio,
CDs, DVDs, or other auxiliary sources. However, the rear
seat passengers can only control the music sources the
front seat passengers are not listening to (except on
some radios where dual control is allowed). For example,
rear seat passengers can control and listen to a CD
through the headphones, while the driver listens to the
radio through the speakers. The rear seat passengers
have control of the volume for each set of wired
headphones.
The RSA functions operate even when the main radio is
off. The front audio system will display the headphone
icon when the RSA is on, and will disappear from
the display when it is off.
Audio can be heard through wired headphones (not
included) plugged into the jacks on the RSA. If the
vehicle has this feature, audio can also be heard on
Channel 2 of the wireless headphones.
To listen to an iPod or portable audio device through
the RSA, attach the iPod or portable audio device to
the front auxiliary input (if available), on the front audio
system. Turn the iPod on, then choose the front
auxiliary input with the RSA SRCE button.
P (Power): Press the P button to turn RSA on and off.
Volume: Turn this knob to increase or to decrease
the volume of the wired headphones. The left knob
controls the left headphones and the right knob controls
the right headphones.
SRCE (Source): Press this button to switch between
the radio (AM/FM), XM™ (if equipped), CD, and if the
vehicle has these features, DVD, front auxiliary, and
rear auxiliary.
Rear Seat Audio with Rear Climate Control shown
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