2001 Chevrolet Impala Owner's Manual - Page 188

P-TYPE LIST: Turn this knob clockwise or counterclockwise to select the Program Type (PTY) you want to listen to. TYPE and a PTY will appear on the display. Press the SEEK TYPE button and the radio will seek to the first RDS broadcaster of the selected P-TYPE. If the radio cannot find the desired P-TYPE, NONE will appear on the display and the radio will return to the last station you were listening to. SEEK TYPE: Press this button to go to a station with the last selected PTY. TYPE and the last selected PTY will appear on the display, if it is not already showing. Press SEEK TYPE a second time to seek. If a station with the selected PTY is not found, the radio will return to the original station and display NONE. ALERT!: This type of announcement warns of national or local emergencies. You will not be able to turn off alert announcements. ALERT! appears on the display when an alert announcement plays. When an alert announcement comes on the tuned radio station, you will hear it, even if the volume is muted or a cassette tape or compact disc is playing. If the cassette tape or compact disc player is playing, play will stop for the announcement and resume when the announcement is finished. This function will only work during actual emergency broadcasts, and will not work during tests of the emergency broadcast system. This feature is not supported by all RDS stations. ALTERNATE FREQUENCY: This feature allows the radio to switch automatically to a stronger station with the same programming. AF is off by default from the factory. Press and hold AM FM for two seconds to turn alternate frequency on or off. AF ON or AF OFF will appear on the display and the radio will beep once. The radio will not switch automatically to other stations when AF is off. 3-18