GMC 2007 Savana Van Owner's Manual page 218

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.
Notice: If you add any label to a CD, insert
more than one CD into the slot at a time, or
attempt to play scratched or damaged CDs, you
could damage the CD player. When 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 appears on the display, see "CD
Messages" later in this section.
LOAD: Press this button to load CDs into the CD
player. This CD player holds up to six CDs.
To insert one CD, do the following:
1. Turn the ignition on.
2. Press and release the LOAD button.
3. Wait for the indicator light, located to the right
of the slot, to turn green.
4. Load a CD. Insert the CD partway into the slot,
label side up. The player pulls the CD in.
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To insert multiple CDs, do the following:
1. Turn the ignition on.
2. Press and hold the LOAD button for
two seconds.
You will hear a beep and the indicator light,
located to the right of the slot, begins to flash
and MULTI LOAD # appears on the display.
3. Once the light stops flashing and turns green,
INSERT CD # appears on the display, load a
CD. Insert the CD partway into the slot,
label side up. The player pulls the CD in.
Once the CD is loaded, the indicator
light begins flashing again. Once the light
stops flashing and turns green, you can load
another CD. The CD player takes up to
six CDs. Do not try to load more than six.
To load more than one CD but less than six,
complete Steps 1 through 3. When finished loading
CDs, press the LOAD button to cancel the
loading function. The radio begins to play the last
CD loaded.
If more than one CD has been loaded, a number
for each CD appears on the display.