GMC 1996 Sierra Owner's Manual page 141

AM-FM Stereo with Cassette Tape and
Automatic Tone Control (Option)
Playing the Radio
PWR-VOL: Press this knob to turn the system on and
off. Turn this control clockwise to increase the volume
and counterclockwise to decrease the volume. The faster
the PWR-VOL knob is rotated, the quicker the volume
is increased or decreased.
RECALL: Press this button to switch between the clock
and the radio station frequency displayed when the radio
is on. Also, press this button to display the time when
the
ignition is off.
SCV This is the Speed-Compensated-Volume (SCV)
knob. Move the control ring behind the PWR-VOL
knob clockwise to adjust the SCV. Set the volume at the
desired level. As you drive, the SCV automatically
increases the volume, as necessary, to overcome road
and wind noise at
any
particular speed. The volume
should always sound the same. Each clockwise position
on the control ring allows for more compensation at a
faster rate.
Finding a Station
AM-FM: Press this button
to switch between
AM,
FM1
and FM2. The display will show your selection.
TUNE: Press lightly on this knob to release it from its
stored position. Rotate the knob clockwise to increase
frequency and counterclockwise to decrease frequency.
When finished tuning, press the knob again to return it
to its stored position.
SEEK: Press the right arrow to tune to the next
higher station and the left m o w to tune to the next
lower station and stay there, The sound will mute
while seeking.
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