GMC 2000 Envoy Owner's Manual page 156

Console-Mounted CD Changer
With the compact disc changer, you can play up to six
discs continuously. Normal size discs may be played
using the slots supplied in the magazine.
You must first load the magazine with discs before you
can play a compact disc. Load the CDs from bottom
to top, placing the discs in the magazine label side up.
If you load a disc label side down, the disc will not play
and an error will occur. Be careful to align and insert the
disc into one disc tray only. Repeat this procedure for
loading up to six discs in the magazine.
Once you have loaded the discs in the magazine, push
the door of the compact disc (CD) changer. The door
will open. Push the magazine into the changer in the
direction of the arrow marked on the magazine.
Push the door closed. When the CD magazine is loaded,
the changer will begin checking for discs in the
magazine. This will continue for up to one and a half
minutes, depending on the number of discs loaded.
To eject the magazine from the player, push the CD changer
door. The door will open. Then press the eject button.
NOTICE:
If the CD magazine fails to eject after the EJECT
button has been pressed, do not attempt to pry
the magazine from the CD changer. Physical
damage caused by prying the magazine from the
CD changer is not covered by warranty. If the
magazine will not eject, take your vehicle to an
authorized repair center for service.
Remember to keep the door closed whenever possible to
keep dirt and dust from getting inside the changer.
Whenever a CD magazine with discs is loaded in the
changer, the CD changer symbol will appear on the
radio display. If the CD changer is checking the
magazine for CDs, the CD symbol will flash on the
display until the changer is ready to play.
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