GMC 2006 Envoy Owner's Manual page 263

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, will begin to flash and
MULTI LOAD # will appear on the display.
3. Once the light stops flashing and turns green,
INSERT CD # will appear on the display, load
a CD. Insert the CD part way into the slot, label side
up. The player will pull the CD in.
Once the CD is loaded, the indicator light will begin
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 will begin to play the last CD loaded.
If more than one CD has been loaded, a number for
each CD will appear on the display.
Playing a Specific Loaded CD
For every CD loaded, a number will appear on the
display. To play a specific CD, first press the CD AUX
button (if not already in CD mode), then press the
numbered pushbutton that corresponds to the CD. A
small bar will appear under the CD number that is
playing and the track number will appear on the display.
If an error appears on the display, see "CD Messages"
later in this section.
CD Z (Eject): Press this button to eject CD(s).
To eject the CD that is currently playing, press and
release this button.
To eject multiple CDs, do the following:
1. Press and hold the CD eject button for two seconds.
You will hear a beep and the indicator light, located
to the right of the slot, will begin to flash and
EJECT ALL will appear on the display.
2. Once the light stops flashing, REMOVE CD # will
appear on the display. The CD will eject and can
be removed.
Once the CD is removed, the indicator light will
begin flashing again and another CD will eject.
To stop ejecting the CDs, press the eject button.
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