2002 Chevrolet Astro Owner's Manual - Page 167
2002 Chevrolet Astro Manual
Page 167 highlights
Set the volume at the desired level. Press this button to select LOW, MEDIUM or HIGH. AVOL will appear on the display. Each higher volume setting allows 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. Finding a Station AM FM: Press this button to switch between AM, FM1 and FM2. The display will show your selection. A PSCAN " (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 your pushbuttons, play for a few seconds, then go on to the next station. Press one of the arrows or one of the pushbuttons again to stop scanning. SCAN will be displayed whenever the tuner is in the preset scan mode. The channel number (P1 through P6) will appear with the frequency. In FM mode, this function will scan through the current band such as FM1 or FM2. The radio will scan to stations with a strong signal only. The sound will mute while scanning. Setting Preset Stations The six numbered pushbuttons let you return to your favorite stations. You can set up to 18 stations (six AM, six FM1 and six FM2) by performing the following steps: 1. Turn the radio on. 2. Press AM FM to select AM, FM1 or FM2. the next or previous station and stay there. The radio will seek to stations with a strong signal only. The sound will mute while seeking. A TUNE ": Turn this knob to choose radio stations. A SEEK ": Press the right or left arrow to seek to 3-18