2001 Chevrolet Impala Owner's Manual - Page 179

Audio Systems Your audio system has been designed to operate easily and 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 its controls, to be sure you're getting the most out of the advanced engineering that went into it. Setting the Clock for Systems with Radio Data System 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. AM or PM will appear on the display. Press and hold MN until the correct minute appears. The clock may be set with the ignition on or off. The clock symbol will appear on the display in time-set mode. To set the clock to the time of 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. Setting the Clock Press and hold the HR or MIN arrow for two seconds. Then press the HR arrow until the correct hour appears. Press and hold the MIN arrow until the correct minute appears. The clock may be set with the ignition on or off. 3-9