GMC C series 2002 Owner's Manual page 129

AM-FM Stereo
Playing the Radio
POWER: Press the round button to turn the radio on.
Press it again to turn the radio off.
VOLUME: Slide the VOLUME lever to the right to
increase volume or to the left to decrease volume.
3-8
CALL: Press this button to display the clock for
a few seconds when the radio is on. To change what
is normally shown on the display (station or time),
press this button and the SET button.
Finding a Station
AM/FM: Press this button to switch between AM
and FM. The display shows your selection.
DOWN UP: Press UP to increase the frequency of a
radio station and DOWN to decrease the frequency of a
radio station. If you press and hold the UP or DOWN
button for more than half a second, the radio will tune
rapidly in that direction.
SEEK: Press this button to seek to the next or previous
station and stay there.
SCAN: Press this button to scan radio stations for
a few seconds. The radio will go to a station, play for a
few seconds, then go on to the next station. Press SCAN
again to stop scanning.