1998 Chevrolet Astro Owner's Manual - Page 170

Rear Seat Audio (If Equipped) PWR: Press this button toturn the rear seat audio system on or off, The rear speakers will be muted when the power is turned on. You may operate the rear seat audio functions even when the primary radio power is off. VOL: Press this knob lightly so it extends. Turn the knob to the right to increase volume and to the leftto decrease volume. Push the knob back into its stored position when you're not usingit. The upper VOL knob controls the upper headphone and the lower VOL knob controls the lower headphone. AM-FM: Press this button to switch between AM, FM1 and FM2. If the front passengers are already listening to AM-FM, the rear seat audio controller will not switch between the bands and cannotchange the frequency. SEEK: While listening to AM-FM, press the up arrow to tune to the next higher station and stay there. Press the down arrow to tuneto the next lower station and stay there. The sound will mute whileseeking. The SEEK button is inactive if the AM-FM mode on the front radio . . is in use. While listening to a cassette tape, press the up arrow to hear the next selectionon the tape. Press the down arrow to go back to the previous selection. The SEEK button is inactive if the tape mode onthe front radio is in use. This feature allows rear seat passengers to listen toa different music source than the front seat passengers including AM-FM automatic tone control, cassette tapes and CDs. For example, rear seat passengers may listen to a cassette tape through headphones while the driver listens to the radio through the front speakers. The rear seat passengers havecontrol of the volume for each headphone. Be aware that the front seat audio controls always override the rear seat audio controls. Note that this feature is intended for rear seat passengers. 3-18