2004 Pontiac Bonneville Owner's Manual - Page 222

Once you have loaded the CDs in the magazine, slide open the door of the 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 right. When the door is closed, the changer will begin checking for CDs in the magazine. This will continue for up to one and a half minutes depending on the number of CDs 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. 3-102