2003 Pontiac Bonneville Owner's Manual - Page 209

Trunk-Mounted CD Changer With the optional compact disc changer, you can play up to 12 discs continuously. Normal size discs may be played using the trays supplied in the magazine. The small discs (8 cm) can be played only with specially designed trays. Notice: Place large objects in the trunk appropriately so that they will not come into contact with the CD changer. Damage could result that wouldn't be covered by your warranty. 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 pull gently on 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 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. 3-94