2007 GMC Envoy Owner's Manual - Page 260

AUTO VOL (Automatic Volume): With automatic volume, the audio system adjusts 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 MIN (minimum), MED (medium), or MAX (maximum). AUTO VOL displays. Each higher setting provides more volume compensation at faster vehicle speeds. To turn automatic volume off, press this button until AUTO VOL OFF displays. © SEEK ¨: Press either the SEEK or the TYPE arrows to go to the next or to the previous station and stay there. The radio only seeks stations with a strong signal that are in the selected band. © SCAN ¨: Press and hold either the SCAN or the TYPE arrows for two seconds until SCN displays and a beep sounds. The radio goes to a station, plays for a few seconds, then goes to the next station. Press either the SCAN or the TYPE arrows again to stop scanning. To scan preset stations, press and hold either the SCAN or the TYPE arrows for more than four seconds. PSC displays and a double beep sounds. The radio goes to a preset station, plays for a few seconds, then goes to the next preset station. Press either the SCAN or the TYPE arrows again to stop scanning presets. The radio only scans stations with a strong signal that are in the selected band. Finding a Station BAND: Press this button to switch between FM1, FM2, AM, or XM1 or XM2 (if equipped). The display shows the selection. o TUNE p: Turn this knob to select radio stations. 260