2003 GMC Yukon Owner's Manual - Page 241

Playing the Radio PWR (Power): Press this knob to turn the system on and off. VOL (Volume): Turn this knob to increase or to decrease volume. AUTO VOL (Automatic Volume): With automatic volume, your audio system will adjust automatically to make up for road and wind noise as you drive by increasing the volume as vehicle speed increases. Set the volume at the desired level. Press this button to select LOW, MEDIUM or HIGH. AVOL will appear on the display. Each higher setting will provide more volume compensation as vehicle speed increases. To turn automatic volume off, press this button until AVOL OFF appears on the display. DISP (Display): Push this knob to switch the display between radio station frequency and time. Time display is available with the ignition turned off. For RDS, push this knob to change what appears on the display while using RDS. The display options are station name, RDS station frequency, PTY and the name of the program (if available). For XM™ (USA only, if equipped), push this knob while in XM mode to retrieve various pieces of information related to the current song or channel. By pressing and releasing this knob, you may retrieve four different categories of information: Artist, Song Title, Category or PTY, Channel Number/Channel Name. To change the default on the display, push this knob until you see the display you want, then hold the knob for two seconds. The radio will produce one beep and selected display will now be the default. Finding a Station BAND: Press this button to switch between AM, FM1, FM2, or XM1, XM2 (USA only, if equipped). The display will show your selection. TUNE: Turn this knob to choose radio stations. q SEEK r: Press the right or the left arrow to seek to the next or to the previous station and stay there. The radio will seek only to stations that are in the selected band and only to those with a strong signal. q SCAN r: Press and hold one of the arrows for more than two seconds. The radio will produce one beep. The radio will scan to a station, play for a few seconds, then go on to the next station. SCAN will be displayed. Press one of the arrows again to stop scanning. 3-87