2011 Chevrolet Impala Owner's Manual - Page 175

Infotainment System Using the Radio 7-3 O (Power/Volume): Press to turn the system on and off. Turn to increase or decrease the volume. (Information): Press to switch the display between the radio station frequency and the time. While the ignition is off, press this button to display the time. Speed Compensated Volume (SCV): Radios with the Speed Compensated Volume (SCV) feature automatically adjust the radio volume to compensate for road and wind noise as the vehicle speeds up or slows down, so that the volume level is consistent. Radio with CD (MP3) The vehicle has one of these radios as its infotainment system. Softkeys The Radio with CD (MP3) has six softkeys located below the radio display. Softkeys are used to control functions that appear on the radio display as tabs directly above the softkeys.