2002 Chevrolet Astro Owner's Manual - Page 168

3. Tune in the desired station. 4. Press AUTO TONE to choose the bass and treble equalization that best suits the type of station you are listening to. 5. Press and hold one of the six numbered pushbuttons. The radio will produce one beep. Whenever you press that numbered pushbutton, the station you set will return and the bass and treble equalization that you selected will also be automatically selected for that pushbutton. 6. Repeat the steps for each pushbutton. Setting the Tone (Bass/Treble) AUDIO: Press and release the AUDIO knob until BASS or TREB appears on the display. Turn the knob clockwise or counterclockwise to increase or decrease. The display will show the bass or treble level. If a station is weak or noisy, you may want to decrease the treble. To adjust the bass and treble to the middle position, push and hold the AUDIO knob. The radio will produce one beep and adjust the display level to the middle position. To adjust all tone and speaker controls to the middle position, push and hold the AUDIO knob when no tone or speaker control is displayed. The radio will produce one beep and display ALL with the level display in the middle position. AUTO TONE: This feature allows you to choose bass and treble equalization settings designed for country/western, jazz, talk, pop, rock and classical stations. Each time you press the AUTO TONE button, this feature will switch to one of these program types. To return the bass and treble to the manual mode, press and release the AUDIO knob. 3-19