1999 Pontiac Montana Owner's Manual - Page 223

yellowblue Rear Seat Audio (If Equipped) The following function is controlled by the primary radio knob: POWER-VOL: Push this knob twice to turn the rear seat audio system on or off. ON or OFF will be displayed for five seconds. The rear speakers will be muted when the power is turned on. You may operate the rear seat audio functions when the primary radio power is off if the ignition is on. The following functions are controlled by the rear seat audio system buttons: PWR: 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: 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 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. The display will show your frequency selection. If the front passengers are already listening to AM-FM, the rear seat audio controller will not switch between the bands and cannot change the frequency. This feature allows rear seat passengers to listen to any of the music sources including AM-FM, cassette tapes or CDs. However, the rear seat passengers can only control the music sources that the front seat passengers are not listening to. For example, rear seat passengers may listen to a cassette tape or CD through headphones while the driver listens to the radio through the front speakers. The rear seat passengers have control of the volume for each set of headphones. 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. 3-23