Care Of Your Cds; Care Of The Cd Player; Fixed Mast Antenna; Chime Level Adjustment - GMC TopKick 2007 Owner's Manual

Care of Your CDs

Handle CDs carefully. Store them in their original
cases or other protective cases and away from
direct sunlight and dust. The CD player scans the
bottom surface of the disc. If the surface of a
CD is damaged, such as cracked, broken,
or scratched, the CD will not play properly or not
at all. If the surface of a CD is soiled, take a
soft, lint free cloth or dampen a clean, soft cloth in
a mild, neutral detergent solution mixed with
water, and clean it. Make sure the wiping process
starts from the center to the edge.
Do not touch the bottom side of a CD while
handling it; this could damage the surface. Pick up
CDs by grasping the outer edges or the edge of
the hole and the outer edge.

Care of the CD Player

Do not use CD lens cleaners for CD players
because the lens of the CD optics can become
contaminated by lubricants.
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Fixed Mast Antenna

The fixed mast antenna can withstand most
vehicle washes without being damaged. If the mast
should ever become slightly bent, straighten it
out by hand. If the mast is badly bent, replace it.
Check occasionally to make sure the mast is
still tightened to the fender. If tightening is
required, tighten by hand, then with a wrench
one quarter turn.

Chime Level Adjustment

The radio is used to adjust the vehicle's chime
level. To change the volume level of the chime,
press and hold pushbutton 6 with the ignition on
and the radio power off. The volume level will
change from the normal level to loud, and HI will
appear on the radio display. To change back to the
default or normal setting, press and hold
pushbutton 6 again. The volume level will change
from the loud level to normal, and LO will appear on
the radio display. Each time the chime volume is
changed, three chimes will sound as an example of
the new volume selected. Removing the radio and
not replacing it with a factory radio or chime module
will disable vehicle chimes.