GMC 2007 Acadia Owner's Manual page 313

For optimal audio performance, the headphones
must be worn correctly. The symbol L (Left)
appears on the upper left side, above the ear pad
and should be positioned on the left ear. The
symbol R (Right) appears on the upper right side,
above the ear pad and should be positioned on
the right ear.
Notice: Do not store the headphones in heat
or direct sunlight. This could damage the
headphones and repairs will not be covered by
your warranty. 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
through your dealer/retailer for more information.
Headphones should be stored in the front floor
console and not in the front seat back pocket.
Headphone damage can occur when the second
row seats are folded forward.
Battery Replacement
To change the batteries on the headphones,
do the following:
1. Turn the screw with a coin or screw driver 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.
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