2003 Chevrolet TrailBlazer Owner's Manual - Page 227

Rear Seat Audio (If Equipped) This feature is intended for rear seat passengers. 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 unless you have a BoseR equipped vehicle. You may operate the rear seat audio functions even when the primary radio power is off. VOL: Turn the knob clockwise to increase volume and counterclockwise to decrease volume. The left VOL knob controls the left headphone and the right VOL knob controls the right headphone. PROG: With a cassette tape in the player and the radio playing, press this button to play a cassette tape. Press PROG to switch between the tape and compact disc if both are loaded. Press PROG again to return to the radio when a cassette tape or compact disc is playing. The inactive tape or CD will remain safely inside the radio for future listening. SEEK: Press the SEEK button to tune to the next station and stay there. The display will show your selection. The sound will mute while seeking. Press and hold the SEEK button to seek through your preset radio stations set on your primary radio pushbuttons. The display will show your selections. This feature allows rear seat passengers to listen to any of the music sources including AM-FM, cassette tapes or CDs and to use automatic tone control. 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. The front seat audio controls always override the rear seat audio controls. 3-55