2002 GMC Yukon Owner's Manual - Page 204

PWR (Power): Press this button to turn 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 (Volume): Press this knob lightly so it extends. Turn the knob clockwise to increase volume and counterclockwise to decrease volume. Push the knob back into its stored position when you're not using it. The upper knob controls the upper headphone and the lower 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 RSA controller will not switch between the bands and cannot change the frequency. Press AM FM to return to listening to the radio when a cassette tape or CD is playing. The inactive tape or CD will remain safely inside the radio for future listening. SEEK : While listening to AM, FM1 or FM2, press the up arrow to tune to the next station and stay there. Press the down arrow to tune to the previous station and stay there. The sound will mute while seeking. This button is inactive if the AM, FM1 or FM2 mode on the front radio is in use. While listening to a cassette tape, press the up arrow to hear the next selection on the tape. Press the down arrow to go back to the previous selection. The SEEK button is inactive if the tape mode on the front radio is in use. While listening to a CD, press the up arrow to hear the next track on the CD. Press the down arrow to go back to the start of the current track (if more than eight seconds have played). The SEEK button is inactive if the CD mode on the front radio is in use. To scan preset stations, press and hold SEEK until the radio goes into scan mode. The radio will go to a station, play for a few seconds, then go on to the next station. Press either SEEK arrow again to stop scanning. The scan function is inactive if the AM, FM1 or FM2 mode on the front radio is in use. 3-24