2005 Cadillac STS Owner's Manual - Page 220

Setting the Date 1. Press the tune/select knob (the right knob) to enter the main menu. 2. Turn the tune/select knob until SET DATE appears on the display. 3. Press the tune/select knob to select SET DATE. 4. Turn the tune/select knob to adjust the date. 5. Press the tune/select knob to update the time. VEHICLE DATE UPDATED will appear on the display. If the DATE is configured into one of the configurable keys, pressing the key will switch the display back to the date set function. The time and date will always appear on the radio display. See "Configurable Radio Display Keys" under Radio with CD on page 3-88 for more information on configuring the keys. Radio with CD Radio with CD shown, Radio with Six-Disc CD similar 3-88