GMC 2009 Envoy Denali Owner's Manual page 206

To insert multiple CDs:
1. Turn the ignition on.
2. Press and hold the LOAD button for two seconds.
A beep sounds and the indicator light, located to
the right of the slot, begins to flash and MULTI
LOAD # displays.
3. Once the light stops flashing and turns green,
INSERT CD # displays, load a CD. Insert the
CD part way 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, 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 displays.
3-74
Playing a Specific Loaded CD
For every CD loaded, a number displays. 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 displays under the
CD number that is playing and the track number displays.
Z (Eject) (Base or MP3 Radio): Press to eject a CD.
Eject can be activated with either the ignition or radio
off. CDs can be loaded with the radio and ignition off if
this button is pressed first.
CD Z (Eject): Press to eject CD(s).
To eject the CD that is currently playing, press and
release this button.
To eject multiple CDs:
1. Press and hold the
A beep is heard and the indicator light, located to
the right of the slot, begins to flash and EJECT
ALL displays.
2. Once the light stops flashing, REMOVE CD #
displays. The CD ejects and can be removed.
Once the CD is removed, the indicator light begins
flashing again and another CD ejects.
To stop ejecting the CDs, press the
Z button for two seconds.
Z button.