2004 Cadillac Seville Owner's Manual - Page 208

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. 3-96