GMC Sierra Classic 2007 Owner's Manual page 321

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 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, 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.
Playing a Specific Loaded CD
For every CD loaded, a number appears on the
display. To play a specific CD, first press the
CD AUX button, then press the numbered
pushbutton that corresponds to the CD. A small bar
appears under the CD number that is playing and
the track number appears on the display.
If an error appears on the display, see "CD
Messages" later in this section.
CD (Eject): Press this button to eject CD(s).
Z
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, begins to flash
and EJECT ALL appears on the display.
2. Once the light stops flashing, REMOVE CD #
appears on the display. 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 LOAD
or the eject button.
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