2010 Chevrolet Impala Owner's Manual - Page 210

Radio Data System (RDS) The radio may have the Radio Data System (RDS) feature. RDS is available for use only on FM stations that broadcast RDS information. This system relies upon receiving specific information from these stations and only works when the information is available. While the radio is tuned to an FM-RDS station, the station name or call letters display. In rare cases, a radio station can broadcast incorrect information that causes the radio features to work improperly. If this happens, contact the radio station. Playing the Radio Radio with CD (MP3) The vehicle has one of these radios as its audio system. O (Power/Volume): and off. Press to turn the system on Turn clockwise or counterclockwise to increase or decrease the volume. The radio goes to the previous volume setting when the radio is turned on. The volume can still be adjusted by using the volume knob. 4-60