Chevrolet 1997 Monte Carlo Owner's Manual page 136

If the code entered is incorrect, SEC will appear on the
display. The radio will remain secured until the correct
code is entered.
When battery power is removed and later applied to a
secured radio, the radio won't turn on and LOC will
appear on the display.
To unlock a secured radio, see "Unlocking the
Theft-Deterrent Feature After a Power Loss" earlier
in this section.
Audio Steering Wheel Contro-
(If Equipped)
If your vehicle has this feature, you can control certain
radio functions using the buttons on your steering wheel.
SEEK: Press the up
arrow to tune to the next
radio station and the
down arrow to tune to
the previous radio station.
If
a cassette tape or compact disc is playing, the player
will advance with the up arrow and rewind with the
down arrow.
PRESET: Press this button to play a station you have
programmed on the radio preset buttons.
AM-FM: Press this button to choose AM, FMl or FM
2. If a cassette tape or compact disc is playing, it will
stop and the radio will play.
I
VOLUME: Press the up
or down arrow to increase
or decrease volume.
PLAY Press this button to play a cassette tape or
compact disc when the radio is playing.
MUTE: Press this button to silence the system. Press
it again to turn on the sound.