2003 CHEVROLET C/K radio controls

2-60
Interior Lamps
Instrument Panel Brightness Control
This feature controls the brightness of the instrument
panel lights.
The thumbwheel for this feature is located to the right of
the exterior lamp control.
Turn the thumbwheel up to brighten the lights. When the
thumbwheel is moved to the first position, the radio
display and transmission selection display will go to full
intensity. The instrument panel cluster will also be dimly
lit. Moving the thumbwheel up to the next position will
activate the interior dome lamps.
Dome Lamps
The dome lamps will come on when you open a door.
You can also turn the dome lamps on by moving the
thumbwheel, located to the right of the exterior lamp
control, all the way up to the second position. In this
position, the dome lamps will remain on whether a door
is open or closed.
You can use the dome override button to set the dome
lamps to automatically come on when a door is open, or
to remain off.
The dome override button is located below the exterior
lamp control.
If the dome override button is pushed in, the dome
lamps will not come on. Use this feature when you want
to leave your door(s) open for an extended period of
time and do not want to run the battery down.
If the dome override button is in the out position, the
interior lamps will work as usual.

3-
3-1
Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle.
Be sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-3 Heater/Air Conditioning Controls
(If Equipped)
3
-4 Air Conditioning (If Equipped)
3
-4 Heating
3
-5 Defogging and Defrosting
3
-5 Rear Window Defogger (If Equipped)
3
-6 Rear Heater (If Equipped)
3
-6 Ventilation System
3
-7 Audio Systems
3
-7 Setting the Time
3
-8AM-FM Radio3
-11 AM-FM Radio with Cassette Tape Player
(If Equipped)
3
-17 AM-FM Radio with Compact Disc Player
(If Equipped)
3
-21 Theft-Deterrent Feature
3
-21 Understanding Radio Reception
3
-22 Tips About Your Audio System
3
-23 Care of Your Cassette Tape Player
3
-24 Care of Your Compact Discs
3
-24 Care of Your Compact Disc Player
3
-24 Fixed Mast Antenna
3
-24 Chime Level Adjustment

3-9
Setting Preset Stations
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) by performing the
following steps:
1. Turn the radio on.
2. Press AM FM to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press and hold one of the six numbered pushbuttons
until you hear a beep. Whenever you press that
numbered pushbutton, the station you set will return.
5. Repeat the steps for each pushbutton.Setting the Tone (Bass/Treble)
AUDIO: To adjust bass and treble, press and release
AUDIO repeatedly until BAS or TRE appears on the
display. Then press and hold the up or the down arrow to
increase or to decrease. If a station is weak or noisy, you
may want to decrease the treble.
To adjust bass or treble to the middle position, select
BAS or TRE. Then press and hold AUDIO for more
than two seconds until you hear a beep. B and a zero or
T and a zero will appear on the display.
To adjust both tone controls and both speaker controls to
the middle position, end out of audio by waiting for the
display to change to the time display. Then press and
hold AUDIO for more than two seconds until you hear a
beep. CEN will appear on the display.

3-10
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the right and
the left speakers, press and release AUDIO until BAL
appears on the display. Then press and hold the up or
the down arrow to move the sound toward the right or
the left speakers.
To adjust the fade between the front and the rear
speakers, press and release AUDIO until FAD appears
on the display. Then press and hold the up or the
down arrow to move the sound toward the front or
the rear speakers.
To adjust balance or fade to the middle position, select
BAL or FAD. Then press and hold AUDIO for more
than two seconds until you hear a beep. L and a zero or
F and a zero will appear on the display.To adjust both tone controls and both speaker controls to
the middle position, end out of audio by waiting for the
display to change to the time display. Then press and
hold AUDIO for more than two seconds until you hear a
beep. CEN will appear on the display.
Fade may not be available if you have a regular
cab model.
Radio Messages
CAL (Calibrated): Your audio system has been
calibrated for your vehicle from the factory. If CAL
appears on the display it means that your radio has not
been configured properly for your vehicle and must be
returned to the dealership for service.
LOC (Locked): This message is displayed when the
Theftlock

system has locked up. Your vehicle must be
returned to the dealership for service.

3-12
Setting Preset Stations
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) by performing the
following steps:
1. Turn the radio on.
2. Press AM FM to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press and hold one of the six numbered pushbuttons
until you hear a beep. Whenever you press that
numbered pushbutton, the station you set will return.
5. Repeat the steps for each pushbutton.Setting the Tone (Bass/Treble)
AUDIO: To adjust bass and treble, press and release
AUDIO until BAS or TRE appears on the display. Then
press and hold the up or the down arrow to increase or
to decrease. If a station is weak or noisy, you may want
to decrease the treble.
To adjust bass or treble to the middle position, select
BAS or TRE. Then press and hold AUDIO for more
than two seconds until you hear a beep. B and a zero or
T and a zero will appear on the display.
To adjust both tone controls and both speaker controls to
the middle position, end out of audio by waiting for the
display to change to the clock display. Then press and
hold AUDIO for more than two seconds until you hear a
beep. CEN will appear on the display.

3-13
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the right and
the left speakers, press and release AUDIO until BAL
appears on the display. Then press and hold the up or
the down arrow to move the sound toward the right or
the left speakers.
To adjust the fade between the front and the rear
speakers, press and release AUDIO until FAD appears
on the display. Then press and hold the up or the down
arrow to move the sound toward the front or the
rear speakers.
To adjust balance or fade to the middle position, select
BAL or FAD. Then press and hold AUDIO for more
than two seconds until you hear a beep. L and a zero or
F and a zero will appear on the display.To adjust both tone controls and both speaker controls to
the middle position, end out of audio by waiting for the
display to change to the time display. Then press and
hold AUDIO for more than two seconds until you hear a
beep. CEN will appear on the display.
Fade may not be available if you have a regular
cab model.
Radio Messages
CAL (Calibration): Your audio system has been
calibrated for your vehicle from the factory. If CAL
appears on the display it means that your radio has not
been configured properly for your vehicle and must be
returned to the dealership for service.
LOC (Locked): This message is displayed when the
Theftlock

system has locked up. Your vehicle must be
returned to the dealership for service.

3-14
Playing a Cassette Tape
Your tape player is built to work best with tapes that are
up to 30 to 45 minutes long on each side. Tapes longer
than that are so thin they may not work well in this
player. The longer side with the tape visible should face
to the right. If the ignition is on, but the radio is off, the
tape can be inserted and will begin playing. If you hear
nothing but a garbled sound, the tape may not be in
squarely. Press the eject button to remove the tape and
start over.
While the tape is playing, use the VOL, AUDIO and
SEEK controls just as you do for the radio. The radio
will display UP if the top side of the tape is playing.
DN (Down) will appear if the bottom side is playing.
If you want to insert a tape while the ignition is off, first
press the eject button or the RCL knob.
If an error appears on the display, see ªCassette Tape
Messagesº later in this section.1 PREV (Previous): Your tape must have at least
three seconds of silence between each selection for
previous to work. Press this pushbutton to go to the
previous selection on the tape if the current selection has
been playing for less than 3 seconds. If pressed when the
current selection has been playing from 3 to 13 seconds,
it will go to the beginning of the previous selection or
the beginning of the current selection, depending on
the position on the tape. If pressed when the current
selection has been playing for more than 13 seconds,
it will go to the beginning of the current selection.
Pressing this pushbutton multiple times will increase the
number of selections to be searched back, up to
-9.
Pressing the NEXT pushbutton will cancel the
selection(s).
2 NEXT: Your tape must have at least three seconds of
silence between each selection for next to work. Press
this pushbutton to go to the next selection on the tape.
Pressing this pushbutton multiple times in the next mode
will increase the number of selections to searched
forward. Pressing the PREV pushbutton will cancel
the selection(s).

3-15
3 REV (Reverse): Press this pushbutton to reverse the
tape rapidly. FR will appear on the display. Press it again
to return to playing the tape. The radio will play while
the tape reverses. You may select stations during reverse
operation by using the TUNE or SEEK controls or by
using the scan or preset scan features.
4 FWD (Forward): Press this pushbutton to advance
quickly to another part of the tape. FF will appear on the
display. Press this pushbutton again to return to playing
the tape. The radio will play while the tape advances.
You may select stations during forward operation by
using the TUNE or SEEK controls or by using the scan
or preset scan features.
5 SIDE: Press this pushbutton to play the other side of
the tape.
6 RPT (Repeat): Your tape must have at least three
seconds of silence between each selection for repeat to
work. Press this pushbutton once to hear a selection
over again. RPT will appear on the display. Press this
button again to turn off repeated play. OFF will appear
on the display. SEEK : The right arrow is the same as the NEXT
pushbutton, and the left arrow is the same as the PREV
pushbutton. If the arrows are held or pressed more than
once, the player will continue moving forward or
backward through the tape.
AM FM: Press this button to listen to the radio when a
tape is playing. The inactive tape will remain safely
inside the radio for future listening.
TAPE: Press this button to play a cassette tape when
listening to the radio. CAS will appear on the display.
(EJECT): Press this button to eject a tape. Eject
may be activated with the radio off. Cassette tapes may
be loaded with the radio and vehicle off if this button is
pressed first.