2004 GMC Envoy Owner's Manual - Page 198

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 at faster vehicle speeds. To turn automatic volume off, press this button until AVOL OFF appears on the display. DISPL (Display): Press this knob to switch the display between the radio station frequency and the time. When the ignition is off, press this knob to display the time. For RDS, press the DISPL 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™ (if equipped), press the DISPL knob while in XM™ mode to retrieve four different categories of information related to the current song or channel: Artist, Song Title, Category or PTY, Channel Number/Channel Name. To change the default on the display, press the DISPL knob until you see the display you want, then hold the knob for two seconds. The radio will produce one beep and the selected display will now be the default. Finding a Station BAND: Press this button to switch between FM1, FM2, AM, or XM1 or XM2 (if equipped). The display will show the selection. TUNE: Turn this knob to select radio stations. q SEEK r: Press the right or the left arrow to go to the next or to the previous station and stay there. The radio will only seek stations with a strong signal that are in the selected band. q SCAN r: Press and hold either arrow for more than two seconds. SCAN will appear on the display and you will hear a beep. The radio will go to a station, play for a few seconds, then go on to the next station. Press either arrow again to stop scanning. To scan preset stations, press and hold either arrow for more than four seconds. PSCN will appear on the display and you will hear two beeps. The radio will go to the first preset station, play for a few seconds, then go on to the next preset station. Press either arrow again or one of the pushbuttons to stop scanning. The radio will only scan stations with a strong signal that are in the selected band. 3-78