set clock CHEVROLET ASTRO 1999 Owners Manual

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2-13
Hatch
CAUTION:
It can be dangerous to drive with the rear
swing
-out windows, rear hatch or rear doors
open because carbon monoxide (CO) gas can
come into your vehicle. You can't see or smell
CO. It can cause unconsciousness and even death.
If you must drive with the rear swing-out windows,
rear hatch or rear doors open or if electrical wiring
or other cable connections must pass through the
seal between the body and the rear swing
-out
windows, rear hatch or rear doors:

Make sure all other windows are shut.

Turn the fan on your heating or cooling
system to its highest speed with the setting
on anything but MAX A/C. That will force
outside air into your vehicle. See ªComfort
Controlsº in the Index.

If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.
Hatch Release (Option)
You can use your key to unlock the hatch and all the
other doors from the outside. Insert the key into the
hatch release button and turn it counterclockwise. All
doors will unlock.
You may also use the Keyless Entry System
described earlier.
The hatch can be opened or closed without a key if the
door lock system is unlocked.
To open the hatch, unlock it, press the button and lift the
handle located in the center of the door.

3-
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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
-2 Heating/Air Conditioning System
3
-3 Heating System
3
-4 Rear Heating System (Option)
3
-5 Rear Air Conditioning System (Option)
3
-5 Air Conditioning
3
-6 Heating
3
-6 Defrosting
3
-6 Ventilation System
3
-8 Rear Window Defogger (Option)
3
-9 Audio Systems
3
-9 Setting the Clock for Systems with SET
Button
3
-9 Setting the Clock for Systems with HR and
MN Buttons
3
-9AM-FM Stereo3
-11 AM-FM Stereo with Cassette Tape Player
(If Equipped)
3
-13 AM-FM Stereo with Cassette Tape Player and
Automatic Tone Control (If Equipped)
3
-18 AM-FM Stereo with Compact Disc Player and
Automatic Tone Control (If Equipped)
3
-22 Rear Seat Audio (If Equipped)
3
-23 Remote Compact Disc Player (If Equipped)
3
-26 Theft-Deterrent Feature (If Equipped)
3
-28 Understanding Radio Reception
3
-28 Tips About Your Audio System
3
-29 Care of Your Cassette Tape Player
3
-31 Care of Your Compact Discs
3
-31 Care of Your Compact Disc Player
3
-31 Fixed Mast Antenna

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3-2
Comfort Controls
This section tells you how to make your air system
work for you. Your comfort control system uses
ozone
-friendly R-134a refrigerant.
With these systems, you can control the heating, cooling
and ventilation in your vehicle. Your vehicle also has a
flow
-through ventilation system described later in
this section.
Heating/Air Conditioning System
If your vehicle has air conditioning, your heating/air
conditioning controls will look like this.Fan Knob
This control has four positions. To increase airflow, turn
the knob toward HI. To decrease airflow, move it
toward LO.
Temperature Knob
This knob is next to the fan knob. It controls the
temperature of the air flowing into your vehicle. Turn
the knob clockwise for warmer air. Turn the knob
counterclockwise for cooler air.
Function Knob
This knob is next to the temperature knob.
OFF: This setting turns the system off.
MAX A/C: This cools the air the fastest, by
recirculating the inside air. Turn the temperature knob
all the way to MAX A/C.
A/C: This setting brings in outside air and cools it.

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BI-LEVEL: This setting brings in outside air and
blows it out through the heater floor vents and the instrument
panel vents. If you move the temperature knob between hot
and cold, cooler air will come out of the upper vents while
warmer air comes out of the floor vent. The air conditioning
compressor may operate in this setting to cool the air.
VENT: The air comes out at the vents on your
instrument panel. The air conditioning compressor will
not run in this position. Adjust the temperature knob for
warmer or cooler air.
HEATER: Most of the air comes out near the
floor. The rest comes out from the defroster vents under
the windshield and at the front side windows.
BLEND: With this setting, the heated outside air
comes out of both the heater vents and defroster vents.
Adjust the temperature knob for warmer or cooler air.
The air conditioning compressor may operate in this
setting to dehumidify the air.
DEFROST: This setting operates the defroster.
Most of the air comes out near the windshield, with
some going to the floor vents and front side windows.
The air conditioning compressor may operate in this
setting to dehumidify the air.
Heating System
If your vehicle does not have air conditioning, your
heater controls will look like this.
Fan Knob
This control has four positions. To increase airflow,
turn the knob toward HI. To decrease airflow, move it
toward LO.
Temperature Knob
This knob is next to the fan knob. It controls the
temperature of the air flowing into your vehicle. Turn
the knob clockwise for warmer air. Turn the knob
counterclockwise for cooler air.

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Audio Systems
Your Delco Electronics audio system has been designed
to operate easily and give years of listening pleasure.
You will get the most enjoyment out of it if you acquaint
yourself with it first. Find out what your Delco
Electronics system can do and how to operate all its
controls, to be sure you're getting the most out of the
advanced engineering that went into it.
Setting the Clock for Systems with
SET Button
Press SET. Within five seconds, press and hold the
SEEK right arrow until the correct minute appears on
the display. Press and hold the SEEK left arrow until the
correct hour appears on the display.
Setting the Clock for Systems with HR and
MN Buttons
Press and hold HR until the correct hour appears on the
display. Press and hold MN until the correct minute
appears on the display. To display the clock with the
ignition off, press RECALL or HR/MN and the time
will be displayed for a few seconds. There is an initial
two
-second delay before the clock goes into the
time
-set mode.
AM-FM Stereo
Playing the Radio
VOLUME: This knob turns the system on and off and
controls the volume. To increase volume and turn the radio
on, turn the knob clockwise. Turn it counterclockwise to
decrease volume and turn the radio off.
RECALL: Display the time with the ignition off by
pressing the recall knob. When the radio is playing,
press this knob to recall the station frequency.

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3-11 AM-FM Stereo with Cassette Tape Player
(If Equipped)
Playing the Radio
VOLUME: This knob turns the system on and off and
controls the volume. To increase volume and turn the radio
on, turn the knob clockwise. Turn it counterclockwise to
decrease volume and turn the radio off.
RECALL: Display the time with the ignition off by
pressing this knob. When the radio is playing, press this
knob to recall the station frequency.Finding a Station
AM
-FM: Press the lower knob to switch between AM,
FM1 and FM2.
TUNE: Turn the lower knob to tune in radio stations.
SEEK: Press the right arrow to tune to the next higher
station and the left arrow to tune to the next lower
station and stay there.
PUSHBUTTONS: The four numbered pushbuttons let you
return to your favorite stations. You can set up to 21 stations
(seven AM, seven FM1 and seven FM2). Just:
1. Turn the radio on.
2. Press AM
-FM to select the band.
3. Tune in the desired station.
4. Press SET. (SET will appear on the display.)
5. Press one of the four pushbuttons within five
seconds. Whenever you press that numbered button,
the station you set will return.
6. Repeat the steps for each pushbutton.

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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.
Once the tape is playing, use the knobs for VOLUME,
BAL, FADE, BASS and TREB just as you do for
the radio.
REV: Press the SEEK left arrow to reverse the cassette
tape. Press the SEEK right arrow to stop reversing
the tape.
FWD: Press the SEEK right arrow to advance the
cassette tape. Press the SEEK left arrow to stop
forwarding the tape.
RECALL: Press this knob to switch tape sides.
EJECT: Press this button to remove the tape or stop the
tape and play the radio.
CLN: If this message appears on the display, the
cassette tape player needs to be cleaned. It will still play
tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. See ªCare of
Your Cassette Tape Playerº in the Index. After you clean
the player, press and hold EJECT for five seconds to
reset the CLN indicator. The radio will display
--- to
show the indicator was reset.
AM-FM Stereo with Cassette Tape Player
and Automatic Tone Control (If Equipped)
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 being rotated continuously.
RECALL: Display the time with the ignition off by
pressing this button. When the radio is playing, press
this button to recall the station frequency.

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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 will show 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 arrow to tune to the next higher
station and the left arrow to tune to the next lower station
and stay there. The sound will mute while seeking.SCAN: Press and hold SEEK for two seconds until
SCAN appears on the display. SCAN allows you to
listen to stations for a few seconds. The receiver will
continue to scan and momentarily stop at each station
until you press the button again. The sound will mute
while scanning.
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 setting you prefer.
5. Press and hold one of the six pushbuttons. The sound
will mute. When it returns, release the button.
Whenever you press that numbered button, the
station you set will return and the tone you selected
will be automatically selected for that button.
6. Repeat the steps for each pushbutton.

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P. SCAN: The preset scan button lets you scan through
your favorite stations stored on your pushbuttons. Select
either the AM, FM1 or FM2 mode and then press
P. SCAN. It will scan through each station stored on your
pushbuttons and stop for a few seconds before continuing
to scan through all of the pushbuttons. Press P. SCAN
again or one of the pushbuttons to stop scanning to listen
to a specific preset station. P. SCAN will light up on the
display while in this mode. If one of the stations stored on
a pushbutton is too weak for the location you are in, the
radio display will show the channel number (P1
-P6) for
several seconds before advancing to the next preset station.
Setting the Tone
BASS: Press lightly on this knob to release it from its
stored position. Turn the knob clockwise to increase
bass and counterclockwise to decrease bass. When the
BASS control is rotated, the AUTO TONE display will
go blank.
TREB: Press lightly on this knob to release it from its stored
position. Turn the knob clockwise to increase treble and
counterclockwise to decrease treble. When the TREB control
is rotated, 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: Press this button to select among the
six preset equalization settings and tailor the sound to
the music or voice being heard. Each time you press the
button, the selection will switch to one of the preset
settings of CLASSIC, NEWS, ROCK, POP, C/W
(Country/Western) or JAZZ. To return to the manual
mode, press and release this button until the AUTO
TONE display goes blank. This will return the tone
adjustment to the BASS and TREB controls. If a
BASS or TREB control is rotated, the AUTO TONE
display will go blank. Use PUSHBUTTONS to program
AUTO TONE.
Adjusting the Speakers
BAL: Press lightly on this knob to release it from its
stored position. Turn the control clockwise to adjust
sound to the right speakers and counterclockwise to
adjust sound to the left speakers. The middle position
balances the sound between the speakers.
FADE: Press lightly on this knob to release it from its
stored position. Turn the control 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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3-18 AM-FM Stereo with Compact Disc Player
and Automatic Tone Control (If Equipped)
Playing the Radio
PWR
-VOL: Press this knob to turn the system on and
off. To increase volume, turn this knob clockwise. Turn
it counterclockwise to decrease volume. The knob is
capable of rotating continuously.
RECALL: Display the time with the ignition off by
pressing this button. When the radio is playing, press
this button to recall the station frequency.
SCV: Your system has a feature called
Speed
-Compensated Volume (SCV). With SCV, your
audio system adjusts automatically to make up for roadand 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 will show 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 arrow to tune to the next higher
station and the left arrow to tune to the next lower station
and stay there. The sound will mute while seeking.
SCAN: Press and hold SEEK for two seconds until
SCAN appears on the display. SCAN allows you to
listen to stations for a few seconds. The receiver will
continue to scan and momentarily stop at each station
until you press the button again. The sound will mute
while scanning.