2004 Chevrolet Astro Owner's Manual - Page 163

Setting the Tone (Bass/Treble) BASS: Press this knob lightly so it extends. Turn the knob to increase or to decrease bass. TREB (Treble): Press this knob lightly so it extends. Turn the knob to increase or to decrease treble. If a station is weak or noisy, you may want to decrease the treble. Return these knobs to their stored positions when you're not using them. AUTO TONE (Automatic Tone): Press this knob to select customized equalization settings designed for country/western, jazz, talk, pop, rock, and classical. To return the bass and treble to the manual mode, either press and release the AUTO TONE button until the display goes blank or press and release the BASS or TREB knobs and turn them until the display goes blank. Adjusting the Speakers (Balance/Fade) BAL (Balance): Press this knob lightly so it extends. Turn the knob to move the sound toward the right or the left speakers. FADE: Press this knob lightly so it extends. Turn the knob to move the sound toward the front or the rear speakers. Return these knobs to their stored positions when you are not using them. Playing a CD Insert a CDpartway into the slot, label side up. The player will pull it in and the CD should begin playing. CD and a CD symbol will appear on the display. If you want to insert a CD when the ignition is off, first press the EJECT button. If you insert a CD with the radio off and the ignition on, it will start to play. If you turn off the ignition or radio with a CD in the player, it will stay in the player. When you turn on the ignition or radio, the CD will start playing where it stopped, if it was the last selected audio source. 3-43