2003 GMC Sierra 1500 Pickup Owner's Manual - Page 231

SCAN: You can also scan through the channels within a category by performing the following: 1. Turn the P-TYPE LIST knob. TYPE and a PTY will appear on the display. 2. Select a category by turning the P-TYPE LIST knob. Setting Preset PTYs (RDS Only) The six numbered pushbuttons let you return to your favorite PTYs. These buttons have factory PTY presets. You can set up to 12 PTYs (six FM1 and six FM2) by performing the following steps: 3. Once the desired category is displayed, press either SCAN arrow, and the radio will begin scanning within your chosen category. 4. Press wither SCAN arrow again to stop scanning. BAND (Alternate Frequency): Alternate frequency allows the radio to switch to a stronger station with the same program type. Press and hold BAND for two seconds to turn alternate frequency on. AF ON will appear on the display. The radio may switch to stronger stations. Press and hold BAND again for two seconds to turn alternate frequency off. AF OFF will appear on the display. The radio will not switch to other stations. This function does not apply for XMTMor DAB. 1. Press BAND to select FM1 or FM2. 2. Turn the P-TYPE LIST knob. TYPE and a PTY will appear on the display. 3. Turn the P-TYPE LIST knob to select a PTY. 4. Press and hold one of the six numbered pushbuttons until you hear a beep. Whenever press that you numbered pushbutton, the PTY you set will return. 5. Repeat the steps for each pushbutton. RDS and DAB Messages ALERT!: Alert warns of local or national emergencies. When an alert announcement comes on the current radio station, ALERT! will appear on the display. You will hear the announcement, even if the volume is muted or a compact disc is playing. If the compact disc player is playing, play will stop during the announcement. You will not be able to turn off alert announcements. ALERT! will not be affected by tests of the emergency broadcast system. This feature is not supported by all RDS stations. 3-76