Buick 2003 LeSabre Owner's Manual page 199

You must first load the magazine with discs before you
can play a compact disc. Each of the 12 trays holds
one disc. Slide the button on the top of the magazine
and gently pull out one of the trays. Load the trays from
top to bottom, placing a disc on the tray label side
up. If you load a disc with the label side down, the disc
will not play and an error will occur. Gently push the
tray back into the magazine slot until it locks into place.
Repeat this procedure for loading up
to
12 discs in
the magazine.
Once you have loaded the discs in the magazine,
slide open the door of the compact disc (CD) changer.
Push the magazine into the changer in the direction
of the arrow marked on top of the magazine.
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