Pontiac 2002 Firebird - Manual (Page 165)

3-11
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. Close the door by sliding it all the way to the left. If the
door is left partially open, the changer will not operate
and an error will occur. When the door is closed, the
changer will begin checking for discs in the magazine.
This will continue for up to two minutes depending on
the number of discs loaded.
To eject the magazine from the player, slide the CD
changer door all the way open. The magazine will
automatically eject. Remember to keep the door closed
whenever possible to keep dirt and dust from getting
inside the changer.