1999 PONTIAC GRAND PRIX light

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3-5 Automatic Control
For the most efficient operation, you should set the
system temperature and press AUTO. The system will
select the best fan speed and airflow settings to keep you
comfortable. The air conditioning compressor will run if
the outside temperature is above 38
F (3.3
C). You may
notice a delay of three to four minutes before the fan
comes on.
Driver's Temperature Knob
The left knob sets the temperature for the entire system
when the light on DUAL button isn't lit. If the light is
lit, the knob sets the temperature for the driver. Turn the
knob toward red (clockwise) to raise the desired cabin
temperature. Turn it toward blue (counterclockwise) to
lower the temperature. The display will show your
selection for a few seconds, then the outside temperature
will show or be displayed.
Passenger's Temperature Knob
The right knob sets the desired cabin temperature for the
passenger and will automatically force the system into a
dual zone operation, lighting the dual zone button light.
Turn the right knob toward red (clockwise) to raise the
temperature. Turn it toward blue (counterclockwise) to
lower the temperature.Dual Zone Button Light
The dual zone button light indicates whether the system
is in single zone or dual zone operation. When there is
no desire for dual zone operation, push the lit dual zone
button to return to single zone operation. The dual zone
button light will go off.
The system will operate to achieve your comfort set
point as quick as possible. If you set the temperature for
60
F (16
C) or 90
F (32
C), the fan will go to its
highest speed, unless you manually select a lower speed.
The system will maintain full cold or full hot operation
at these settings.
Cold Weather Example: When you start the vehicle in
cold weather, (below freezing) or after being parked
overnight. If your Driver Set Temperature is 73
F
(23
C) and you are in Full Automatic mode, the system
will automatically move the temperature doors to full
hot. The blower will start out at a low speed and the
blower speed will increase as the engine warms up. The
air will be delivered to the floor. As the interior of the
vehicle warms up to your desired comfort point, the
blower will decrease and the temperature door will
move to a cooler position to maintain your desired
comfort. As the cabin warms up or the sun load
increases the system could switch to air delivered to the
individual to the windshield and the floor (Defog mode).

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3-6
Hot Weather Example: When you start the vehicle in
hot weather, 80
F (27
C) or after being parked during
the day in full sun, if your Driver Set Temperature is
73
F (23
C) and you are in Full Automatic mode, the
system will automatically move the temperature doors to
full cold. The blower will be at low speed momentarily
and then go to the high speed. The air intake will be
recirculated for maximum cooling performance. As the
interior of the vehicle cools down to your desired
comfort point, the blower will decrease and the
temperature door will move to a warmer position to
maintain your desired comfort. As the cabin cools down
or the sun load decreases the system could switch to air
delivered to A/C vents and the floor (Bi
-level mode).
Manual Control
Fan Buttons
The fan buttons select the amount of air you want when
the system is not in AUTO. The display will show the
fan speed by illuminating a maximum of seven fan bars.Mode Button
The center panel has several settings to control the
direction of airflow when the system is not in AUTO.
The indicator light on the button will glow when the
button is pressed. To access the various modes available,
continue to press the MODE button until the desired
mode appears on the display.
If you prefer to manually control the heating, cooling
and ventilation in your vehicle, push UPPER, BI
-LEV,
LOWER, DEFOG or DEF. AUTO will go off the
display. Set the system to the temperature and fan speed
you want. The system will try to maintain the
temperature you set using the mode you select. The
following suggestions will help the system run more
efficiently in manual mode.
RECIRC: This setting recirculates much of the
air inside your vehicle and sends it through the
instrument panel outlets. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 38
F (3.3
C).
UPPER: This setting brings in the outside air and
directs it through the instrument panel outlets.

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3-7
BI-LEV: This setting brings in the outside air and
directs it two ways. Half of the air is directed through
the instrument panel outlets. Most of the remaining air is
directed through the floor ducts and a little to the defrost
and side window vents.
LOWER: This setting sends most of the air
through the ducts near the floor. The remaining airflow
comes out of the defroster and side window vents.
DEFOG: This setting allows half of the air to go
to the floor ducts and half to the defroster and side
window vents.
DEF: This setting directs most of the air through
the defrost vent. Some of the air goes to the floor ducts
and the side window vents. The air conditioning
compressor will run automatically in this setting unless
the outside temperature is below 38
F (3.3
C).Air Conditioning
On very hot days, open the windows long enough to let
hot, inside air escape. This reduces the time for the
vehicle to cool down.
For quick cool
-down on very hot days, use RECIRC.
If this setting is used for long periods of time, the air in
your vehicle may become too dry.
For normal cooling on hot days, use UPPER with the
A/C button pushed in. The system will bring in outside
air and cool it.
On cool, but sunny days, the sun may warm your upper
body, but your lower body may not be warm enough.
You can use BI
-LEV with the A/C button pushed in.
The system will bring in outside air and direct it to your
upper body, while sending slightly warmed air to your
lower body. You may notice this temperature difference
more at some times than others.

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3-11
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 up or down arrow to go to the next
higher or lower station and stay there.
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 and hold one of the six numbered buttons until
SET appears on the display. Whenever you press that
numbered button, the station you set will return.
5. Repeat the steps for each pushbutton.Setting the Tone
BASS: Slide the lever to the right or left to increase or
decrease bass.
TREBLE: Slide the lever to the right or left to increase
or decrease treble. If a station is weak or noisy, you may
want to decrease the treble.
Adjusting the Speakers
BAL: Press this knob lightly so it extends.
Turn this knob to move the sound to the left or right
speakers. The middle position balances the sound
between the speakers.
FADE: Press this knob lightly so it extends.
Turn this knob to move the sound to the front or 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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3-14 AM-FM Stereo with Compact Disc Player
(If Equipped)
Playing the Radio
POWER
-VOL: Push this knob to turn the system on
and off. To increase volume, turn the knob clockwise.
Turn it counterclockwise to decrease volume.
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 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 up or down arrow to go to the next
higher or lower station and stay there.
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 and hold one of the six numbered buttons until
SET appears on the display. Whenever you press that
numbered button, the station you set will return.
5. Repeat the steps for each pushbutton.

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3-15
Setting the Tone
BASS: Slide the lever to the right or left to increase or
decrease bass.
TREBLE: Slide the lever to the right or left to increase
or decrease treble. If a station is weak or noisy, you may
want to decrease the treble.
Adjusting the Speakers
BAL: Press this knob lightly so it extends. Turn it to
move the sound to the left or right speakers. The middle
position balances the sound between the speakers.
FADE: Press this knob lightly so it extends. Turn it to
move the sound to the front or 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 compact disc symbol will
appear on the display. If the ignition and the radio are
on, the disc will begin playing. CD will appear on the
display next to the compact disc symbol. If you want to
insert a disc when the ignition is off, first press EJECT.The integral CD player can play the smaller 8 cm
ªsingleº discs. Full
-size compact discs and the smaller
discs are loaded in the same manner.
If you're driving on a very rough road or if it's very hot,
the disc may not play and E (error) and a number may
appear on the radio display. If the disc comes out, it
could be that:

The disc is upside down.

It is dirty, scratched or wet.

The air is very humid. (If so, wait about an hour and
try again.)
If any error occurs repeatedly or if an error can't be
corrected, please contact your dealer. If your radio
displays an error number, write it down and provide it to
your dealer when reporting the problem.
PREV (1): Press this button or the SEEK down arrow to
go to the start of the current track if more than eight
seconds have played. If you hold the button or press it
more than once, the player will continue moving back
through the disc.
NEXT (2): Press this button or the SEEK up arrow to
go to the start of the next track. If you hold the button or
press it more than once, the player will continue moving
forward through the disc.

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3-17
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 up or down arrow to go to the next
higher or lower station and stay there.
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 and hold one of the six numbered buttons until
SET appears on the display. Whenever you press that
numbered button, the station you set will return.
5. Repeat the steps for each pushbutton.
Setting the Tone
EQUALIZER: A seven
-band equalizer is part of your
audio system. Slide the levers up to boost or down to
reduce frequency range.Adjusting the Speakers
BAL: Press this knob lightly so it extends. Turn it to
move the sound to the left or right speakers. The middle
position balances the sound between the speakers.
FADE: Press this knob lightly so it extends. Turn it to
move the sound to the front or 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. If the ignition and the radio are on,
the disc will begin playing. If you want to insert a disc
when the ignition is off, first press EJECT.
If you're driving on a very rough road or if it's very hot,
the disc may not play and E (error) and a number may
appear on the radio display. If the disc comes out, it
could be that:

The disc is upside down.

It is dirty, scratched or wet.

The air is very humid. (If so, wait about an hour and
try again.)

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3-27 Care of Your Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight and
extreme heat. If they aren't, they may not operate
properly or may cause failure of the tape player.
Your tape player should be cleaned regularly after every
50 hours of use. Your radio may display CLN to indicate
that you have used your tape player for 50 hours without
resetting the tape clean timer. If this message appears on
the display, your 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 your tapes and
player. If you notice a reduction in sound quality, try a
known good cassette to see if it is the tape or the tape
player at fault. If this other cassette has no improvement
in sound quality, clean the tape player.
The recommended cleaning method for your cassette
tape player is the use of a scrubbing action,
non
-abrasive cleaning cassette with pads which scrub
the tape head as the hubs of the cleaner cassette turn.
The recommended cleaning cassette is available through
your dealership (GM Part No. 12344789).When using a scrubbing action, non
-abrasive cleaning
cassette, it is normal for the cassette to eject because
your unit is equipped with a cut tape detection feature
and a cleaning cassette may appear as a broken tape. To
prevent the cleaning cassette from being ejected, use the
following steps.
1. Turn the ignition to RUN or ACCESSORY.
2. Turn the radio off.
3. Press and hold the TAPE/PLAY button for three
seconds. The tape symbol on the display will flash
for two seconds.
4. Insert the scrubbing action cleaning cassette.
5. Eject the cleaning cassette after the manufacturer's
recommended cleaning time.
When the cleaning cassette has been ejected, the cut tape
detection feature is active again.