GMC 2009 Sierra 1500 Crew Cab Owner's Manual page 315

Notice: Do not store the headphones in heat or
direct sunlight. This could damage the headphones
and repairs will not be covered by the warranty.
Storage in extreme cold can weaken the batteries.
Keep the headphones stored in a cool, dry place.
If the foam ear pads attached to the headphones
become worn or damaged, the pads can be replaced
separately from the headphone set. Refer to your
dealer/retailer for more information.
Battery Replacement
To change the batteries on the headphones, do the
following:
1. Turn the screw to loosen the battery door located on
the left side of the headphones. Slide the battery
door open.
2. Replace the two batteries in the compartment.
Make sure that they are installed correctly, using
the diagram on the inside of the battery
compartment.
3. Replace the battery door and tighten the door
screw.
If the headphones are to be stored for a long period of
time, remove the batteries and keep them in a cool,
dry place.
Audio/Video (A/V) Jacks
The A/V jacks, located on the rear of the floor console,
allow audio or video signals to be connected from an
auxiliary device such as a camcorder or a video game
unit to the RSE system. Adapter connectors or cables
(not included) may be required to connect the auxiliary
device to the A/V jacks. Refer to the manufacturer's
instructions for proper usage.
The A/V jacks are color coded to match typical home
entertainment system equipment. The yellow jack (A) is
for the video input. The white jack (B) is for the left audio
input. The red jack (C) is for the right audio input.
Power for auxiliary devices is not supplied by the radio
system.
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