Pontiac 2008 Vibe Owner's Manual page 168

Care of Your CDs
If playing a CD-R, the sound quality can be reduced due
to CD-R quality, the method of recording, the quality of
the music that has been recorded, and the way the CD-R
has been handled. Handle them carefully. Store CD-R(s)
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 does not play properly or not at all. 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.
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.
If there is no apparent damage, try a known good CD.
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Care of Your CD Player
Do not add any label to a CD, it could get caught in the
CD player. If a CD is recorded on a personal computer
and a description label is needed, try labeling the top
of the recorded CD with a marking pen.
The use of CD lens cleaners for CDs is not advised,
due to the risk of contaminating the lens of the CD optics
with lubricants internal to the CD player mechanism.
Notice: If a label is added to a CD, or more than one
CD is inserted into the slot at a time, or an attempt
is made to play scratched or damaged CDs, the CD
player could be damaged. While using the CD player,
use only CDs in good condition without any label,
load one CD at a time, and keep the CD player and
the loading slot free of foreign materials, liquids,
and debris.
If an error displays, see "CD Messages" later in this
section.