1999 CHEVROLET CORVETTE lock

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3-13 Setting the Clock for All Systems
Press and hold HR until the correct hour appears.
Press and hold MN until the correct minute appears.
AM-FM Stereo with Cassette Tape Player
and Automatic Tone Control
Your vehicle may be equipped with six Bose
amplified
speakers. See your dealer for details.Playing the Radio
PWR
-VOL: Press this knob to turn the system on and
off. To increase volume, turn the knob clockwise. Turn
it counterclockwise to decrease volume. The knob is
capable of rotating continuously.
RECALL: Press this button to recall the station being
played. If you press the button when the ignition is off,
the clock will show for a few seconds.
SCV: Your system has a feature called
Speed
-Compensated Volume (SCV). With SCV,
your audio system adjusts automatically to make up
for road and wind noise as you drive. Set the volume
at the desired level. Turn the control ring behind the
upper knob clockwise to adjust the SCV. Then, as you
drive, SCV automatically increases the volume, as
necessary, to overcome noise at any particular speed.
The volume level should always sound the same to you
as you drive. If you don't want to use SCV, turn the
control all the way down. Each notch on the control
ring allows for more volume compensation at faster
vehicle speeds.

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3-15
P.SCAN: Press this button to listen to each of your
favorite stations stored on your pushbuttons for a few
seconds. The radio will scan through each of the stations
stored on your pushbuttons, except those stations with
weak reception. The AUTO TONE setting stored for
that pushbutton will be automatically chosen. Press
P.SCAN or one of the pushbuttons again to stop
scanning. P.SCAN will be displayed whenever the tuner
is in the P.SCAN mode. The channel number (P1
-P6)
will appear momentarily just before the frequency is
displayed. In FM mode, this function will scan through
both FM1 and FM2 preset stations and FM1 or FM2
will appear on the display.
Setting the Tone
BASS: Press this knob lightly so it extends. Turn the
knob clockwise to increase bass and counterclockwise to
decrease bass. When you use this control, the radio's
AUTO TONE setting will switch to manual and the
AUTO TONE display will go blank.
TREB: Press this knob lightly so it extends. Turn the
knob clockwise to increase treble and counterclockwise
to decrease treble. When you use this control, the radio's
AUTO TONE setting will switch to manual and the
AUTO TONE display will go blank. If a station is weak
or noisy, you may want to decrease the treble.Push these knobs back into their stored positions when
you're not using them.
AUTO TONE: This feature allows you to choose
preset bass and treble equalization settings designed for
country/western, classical, news, rock, pop and jazz
stations. C/W will appear on the display when you first
press AUTO TONE. Each time you press it, another
setting will appear on the display. Press it again after
JAZZ appears and the AUTO TONE display will go
blank. Tone control will return to the BASS and TREB
knobs. Also, if you use the BASS and TREB knobs,
control will return to them and the AUTO TONE display
will go blank. Use PUSHBUTTONS and AUTO TONE
button to program AUTO TONE for station presets.
Adjusting the Speakers
BAL: Press this knob lightly so it extends.
Turn the knob clockwise for the right speakers and
counterclockwise for the left speakers. The middle
position balances the sound between the speakers.
FADE: Press this knob lightly so it extends. Turn the
knob clockwise to adjust the sound to the front speakers
and counterclockwise for the rear speakers. The middle
position balances the sound between the speakers.
Push these knobs back into their stored positions when
you're not using them.

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3-19
Playing the Radio
PWR
-VOL: Press this knob to turn the system on and
off. To increase volume, turn the knob clockwise. Turn
it counterclockwise to decrease volume. The knob is
capable of rotating continuously.
RECALL: Press this button to recall the station being
played. If you press the button when the ignition is off,
the clock will show for a few seconds.
SCV: Your system has a feature called
Speed
-Compensated Volume (SCV). With SCV, your
audio system adjusts automatically to make up for road
and wind noise as you drive. Set the volume at the
desired level. Turn the control ring behind the upper
knob clockwise to adjust the SCV. Then, as you drive,
SCV automatically increases the volume, as necessary,
to overcome noise at any particular speed. The volume
level should always sound the same to you as you drive.
If you don't want to use SCV, turn the control all the
way down. Each notch on the control ring allows for
more volume compensation at faster vehicle speeds.Finding a Station
AM
-FM: Press this button to switch between AM, FM1
and FM2. The display shows your selection.
TUNE: Press this knob lightly so it extends. Turn it to
choose radio stations. Push the knob back into its stored
position when you're not using it.
SEEK: Press the right or left arrow to go to the
next higher or lower station. The sound will mute
while seeking.
SCAN: Press one of the SEEK arrows for two seconds,
and SCAN will appear on the display. Use SCAN to
listen to stations for a few seconds. The radio will go to
a station, stop for a few seconds, then go on to the next
station. Press SEEK again to stop scanning. The sound
will mute while scanning.

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3-20
PUSHBUTTONS: The six numbered pushbuttons let
you return to your favorite stations. You can set up to
18 stations (six AM, six FM1 and six FM2). Just:
1. Turn the radio on.
2. Press AM
-FM to select the band.
3. Tune in the desired station.
4. Press AUTO TONE to select the equalization that
best suits the type of station selected.
5. Press and hold one of the six numbered buttons.
The sound will mute. When it returns, release the
button. Whenever you press that numbered button,
the station you set will return and the AUTO TONE
equalization that you selected will also be
automatically selected for that button.
6. Repeat the steps for each pushbutton.P.SCAN: Press this button to listen to each of your
favorite stations stored on your pushbuttons for a few
seconds. The radio will scan through each of the stations
stored on your pushbuttons, except those stations with
weak reception. The AUTO TONE setting stored for
that pushbutton will be automatically chosen. Press
P.SCAN or one of the pushbuttons again to stop
scanning. P.SCAN will be displayed whenever the tuner
is in the P.SCAN mode. The channel number (P1
-P6)
will appear momentarily just before the frequency is
displayed. In FM mode, this function will scan through
both FM1 and FM2 preset stations and FM1 or FM2 will
appear on the display.
Setting the Tone
BASS: Press this knob lightly so it extends. Turn the
knob clockwise to increase bass and counterclockwise to
decrease bass. When you use this control, the radio's
AUTO TONE setting will switch to manual and the
AUTO TONE display will go blank.

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3-21
TREB: Press this knob lightly so it extends. Turn the
knob clockwise to increase treble and counterclockwise
to decrease treble. When you use this control, the radio's
AUTO TONE setting will switch to manual and the
AUTO TONE display will go blank. If a station is weak
or noisy, you may want to decrease the treble.
Push these knobs back into their stored positions when
you're not using them.
AUTO TONE: This feature allows you to choose
preset bass and treble equalization settings designed for
country/western, classical, news, rock, pop and jazz
stations. C/W will appear on the display when you first
press AUTO TONE. Each time you press it, another
setting will appear on the display. Press it again after
JAZZ appears and the AUTO TONE display will go
blank. Tone control will return to the BASS and TREB
knobs. Also, if you use the BASS and TREB knobs,
control will return to them and the AUTO TONE
display will go blank. Use PUSHBUTTONS and
AUTO TONE button to program AUTO TONE for
station presets.Adjusting the Speakers
BAL: Press this knob lightly so it extends.
Turn the knob clockwise for the right speakers and
counterclockwise for the left speakers. The middle
position balances the sound between the speakers.
FADE: Press this knob lightly so it extends. Turn the
knob clockwise to adjust the sound to the front speakers
and counterclockwise for the rear speakers. The middle
position balances the sound between the speakers.
Push these knobs back into their stored positions when
you're not using them.
Playing a Compact Disc
Insert a disc partway into the slot, label side up. The
player will pull it in. The disc should begin playing. The
display will show CD and the CD symbol. If you want
to insert a compact disc with the ignition off, first press
RECALL or EJECT.

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3-27 Theft-Deterrent Feature
THEFTLOCK
is designed to discourage theft of your
radio. It works by using a secret code to disable all radio
functions whenever battery power is removed.
The THEFTLOCK feature for the radio may be used or
ignored. If ignored, the system plays normally and the
radio is not protected by the feature. If THEFTLOCK is
activated, your radio will not operate if stolen.
When THEFTLOCK is activated, the radio will display
LOC to indicate a locked condition anytime battery
power has been interrupted. If your battery loses power
for any reason, you must unlock the radio with the secret
code before it will operate.
Activating the Theft
-Deterrent Feature
The instructions which follow explain how to enter your
secret code to activate the THEFTLOCK system. It is
recommended that you read through all nine steps
before starting the procedure.
NOTE: If you allow more than 15 seconds to elapse
between any steps, the radio automatically reverts to
time and you must start the procedure over at Step 4.1. Write down any three or four
-digit number from
000 to 1999 and keep it in a safe place separate from
the vehicle.
2. Turn the ignition to ACC or ON.
3. Turn the radio off.
4. Press the 1 and 4 buttons together. Hold them down
until
--- shows on the display. Next you will use the
secret code number which you have written down.
5. Press MN and 000 will appear on the display.
6. Press MN again to make the last two digits agree
with your code.
7. Press HR to make the first one or two digits agree
with your code.
8. Press AM
-FM after you have confirmed that the
code matches the secret code you have written down.
The display will show REP to let you know that you
need to repeat Steps 5 through 7 to confirm your
secret code.
9. Press AM
-FM and this time the display will show
SEC to let you know that your radio is secure. The
LED indicator by the volume control will begin
flashing when the ignition is turned off.

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3-28
Unlocking the Theft-Deterrent Feature After a
Power Loss
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on. LOC will appear on the display.
2. Press MN and 000 will appear on the display.
3. Press MN again to make the last two digits agree
with your code.
4. Press HR to make the first one or two digits agree
with your code.
5. Press AM
-FM after you have confirmed that the
code matches the secret code you have written down.
The display will show SEC, indicating the radio is
now operable and secure.
If you enter the wrong code eight times, INOP will
appear on the display. You will have to wait an hour
with the ignition on before you can try again. When you
try again, you will only have three chances to enter the
correct code before INOP appears.
If you lose or forget your code, contact your dealer.
Disabling the Theft
-Deterrent Feature
Enter your secret code as follows; pause no more than
15 seconds between steps:1. Turn the ignition to ACC or ON.
2. Turn the radio off.
3. Press the 1 and 4 buttons together. Hold them down
until SEC shows on the display.
4. Press MN and 000 will appear on the display.
5. Press MN again to make the last two digits agree
with your code.
6. Press HR to make the first one or two digits agree
with your code.
7. Press AM
-FM after you have confirmed that the
code matches the secret code you have written down.
The display will show
---, indicating that the radio is
no longer secured.
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 ªUnlocking the
Theft
-Deterrent Feature After a Power Lossº earlier in
this section.

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4-7
Avoid needless heavy braking. Some people drive in
spurts
-- heavy acceleration followed by heavy
braking
-- rather than keeping pace with traffic. This
is a mistake. Your brakes may not have time to cool
between hard stops. Your brakes will wear out much
faster if you do a lot of heavy braking. If you keep pace
with the traffic and allow realistic following distances,
you will eliminate a lot of unnecessary braking. That
means better braking and longer brake life.
If your engine ever stops while you're driving, brake
normally but don't pump your brakes. If you do, the
pedal may get harder to push down. If your engine
stops, you will still have some power brake assist. But
you will use it when you brake. Once the power assist is
used up, it may take longer to stop and the brake pedal
will be harder to push.
Anti-Lock Brakes (ABS)
Your vehicle has anti-lock brakes (ABS). ABS is an
advanced electronic braking system that will help
prevent a braking skid.
When you start your engine and begin to drive away,
your anti
-lock brake system will check itself. You may
hear a momentary motor or clicking noise while this test
is going on, and you may even notice that your brake
pedal moves a little. This is normal.
If there's a problem with the
anti
-lock brake system, this
warning light will stay on.
See ªAnti
-Lock Brake
System Warning Lightº in
the Index.