2003 Chevrolet Blazer Owner's Manual - Page 179

AUTO VOL (Automatic Volume): With automatic volume, your audio system adjusts automatically to make up for road and wind noise as you drive. 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 allow for more volume compensation at faster vehicle speeds. Then as you drive, automatic volume increases the volume as necessary to overcome noise at any speed. The volume level should always sound the same to you as you drive. NONE will appear on the display if the radio cannot determine the vehicle speed. If you don't want to use automatic volume, select OFF. DlSP (Display): Press this button to switch the display between the radio station frequency and the time. Time display is available with the ignition turned off. To change the default on the display, push the 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 AM FM: Press this button to switch between AM, FMI and FM2. The display will show your selection. TUNE: Turn this knob to choose radio stations. SEEK b : 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. 4 4 PSCANb (Preset Scan): Press and hold one of the arrows for more than two seconds. The radio will produce one beep. The radio will scan to the first preset station stored on the pushbuttons, play for a few seconds, then go on to the next station. SCAN will be displayed. Press one of the arrows again or one of the pushbuttons to stop scanning presets. The radio will scan only to presets that are in the selected band and only to those with a strong signal. 3-50