2003 Chevrolet Monte Carlo Owner's Manual - Page 167

Audio System(s) Nofice: Before you add any sound equipment to your vehicle - like a tape player, CB radio, mobile r telephone o two-way radio - be sure you can add what you want. If you can, it's very important to do it properly. Added sound equipment may interfere with the operation of your vehicle's engine, Delphi Electronics radio or other systems, and even damage them. Your vehicle's systems may interfere with the operation of sound equipment that has been added improperly. So, before adding sound equipment, check with your dealer and be sure to check federal rules covering mobile radio and telephone units. Setting the Time Press and hold the HR or MN buttons, located below the tune knob, for two seconds. Then press and hold HR until the correct hour appears on the display. AM or PM will also appear. Press and hold MN until the correct minute appears on the display. The time may be set with the ignition on or off. The clock symbol will appear on the display in time-set mode. To synchronize the time with an FM station broadcasting Radio Data System (RDS) information, press and hold HR and MN at the same time for two seconds until UPDATED and the clock symbol appear on the display. If the time is not available from the station, NO UPDAT will appear on the display instead. Your audio system has been designed to operate easily and to give years of listening pleasure. You will get the most enjoyment out of it if you acquaint yourself with it first. Find out what your audio system can do and how to operate all of its controls to be sure you're getting the most out of the advanced engineering that went into it. Your vehicle has a feature called Retained Accessory Power (RAP). With RAP, you can play your audio system even after the ignition is turned off. See "Retained Accessory Power (RAP)'' under lgnition Positions on page 2- I 7. 3-52