1999 PONTIAC BONNEVILLE air condition

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2-71
NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
NOTICE:
Modifications made to the engine, transaxle,
exhaust or fuel system of your vehicle or the
replacement of the original tires with other than
those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause the CHECK ENGINE light to
come on. Modifications to these systems could
lead to costly repairs not covered by your
warranty. This may also result in a failure to pass
a required Emission Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:

Reducing vehicle speed.

Avoiding hard accelerations.

Avoiding steep uphill grades.

If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.

3-
First Edition for Pontiac Bonneville Owner's Manual ± 1999
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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
-6 Air Conditioning
3
-6 Heating
3
-7 Ventilation System
3
-8 Defogging and Defrosting
3
-9 Rear Window Defogger
3
-10 Audio Systems
3
-10 Setting the Clock for AM-FM Stereo
3
-10 Setting the Clock for All Systems Except
AM
-FM Stereo
3
-10 AM-FM Stereo
3
-12 AM-FM Stereo with Cassette Tape Player
(If Equipped)
3
-16 AM-FM Stereo with Cassette Tape Player and
Equalizer (If Equipped)3
-19 AM-FM Stereo with Compact Disc Player
(If Equipped)
3
-22 AM-FM Stereo with Compact Disc Player and
Equalizer (If Equipped)
3
-25 Theft-Deterrent Feature
3
-27 Audio Steering Wheel Controls (If Equipped)
3
-28 Understanding Radio Reception
3
-28 Tips About Your Audio System
3
-29 Care of Your Cassette Tape Player
3
-30 Care of Your Compact Discs
3
-30 Care of Your Compact Disc Player
3
-31 Fixed Mast Antenna
3
-31 Power Antenna Mast Care

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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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.
Standard Climate Control System
H±23±4002±S
Fan Knob
The left knob is the fan knob and selects the force of air
you want. Turn the knob clockwise to increase fan speed
and counterclockwise to decrease fan speed. The fan will
always run unless the right control knob is turned to OFF.
The fan must be on to run the air conditioning compressor.
Temperature Knob
The center control regulates the temperature of the air
coming through the system. Turn it toward the blue area
for cooler air. Turn it toward the red area for warmer air.
Mode Knob
The right control has settings for air conditioning and
non
-air conditioning modes. The mode control allows
you to choose the direction of air delivery.
MAX: This setting provides maximum cooling with the
least amount of work. MAX recirculates much of the air
inside your vehicle so it cools quickly. The air is
directed through the instrument panel outlets.

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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3-3
A/C: This setting cools the air entering your vehicle and
directs it through the instrument panel outlets. The
air conditioning compressor operates in all air
conditioner positions.
BI-LEVEL: This setting directs air into your
vehicle in two ways. Cool air is directed to the upper
portion of your body through the middle instrument
panel outlets while warmed air is directed to the floor.
VENT: This setting directs airflow through the
middle instrument panel outlets. The air conditioning
compressor is not working when VENT is selected.
HEATER: This setting directs warmed air
through the floor outlets. Some warm air is diverted to
the windshield to minimize fogging.
DEFOG: This setting directs air to the HEATER
outlets and toward the windshield.
DEFROST: This setting directs most of the air
toward the windshield.
Electronic Climate Control System (Option)
H±23±0005±T
Temperature Button
The TEMP button changes the temperature of the air
coming through the system. Press the up arrow for
warmer air and the down arrow for cooler air.
Fan Button
The button with the fan symbol adjusts the fan speed.
Press the up arrow to increase fan speed and the down
arrow to decrease fan speed.

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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3-5
Manual Operation
You may also manually adjust the air delivery mode or
fan speed.
HEAT: Manually selecting HEAT by cycling
through the MODE settings will deliver air to the
floor outlets.
DEFOG: Manually selecting DEFOG by cycling
through the MODE settings will deliver air to the floor
and windshield outlets.
BI-LEVEL: Manually selecting BI-LEVEL by
cycling through the MODE setting will deliver warm air
to the floor and cooler air to the middle instrument
panel outlets.
OFF: Press this button to turn the system off. Fresh air
will continue to flow through the vehicle, and the
system will try to maintain the previously chosen
comfort setting. The outside temperature will show in
the display when the system is off.A/C: Press this button to turn the air conditioning on
and off. The system will cool and dehumidify the air
inside the vehicle. In the AUTO mode, the display will
show that A/C is active, but the air conditioning
compressor only operates when the system determines it
is needed.
RECIRC: Press this button to limit the amount of
fresh air entering your vehicle. You may use this setting
to limit odors entering your vehicle. Press RECIRC to
change to a manual MODE and air will recirculate until
the RECIRC button is pressed again. RECIRC will show
on the display and then return to EXT TEMP display.
Operating the RECIRC mode in cold temperatures or
under high humidity conditions may cause moisture to
form on the inside of the windshield. If this condition
occurs, press the RECIRC button again.
DEFROST: Press this button to clear the
windshield. The system will automatically control the
fan speed if you select defrost from AUTO.

F
C: Press this button to display the temperature in
degrees Fahrenheit or Celsius.

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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3-6 Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
If you have the standard system, for quick cool
-down on
very hot days, use MAX with the temperature knob in
the blue area. If this setting is used for long periods of
time, the air in your vehicle may become too cold and
dry. For normal cooling on hot days, use A/C with the
temperature knob in the blue area. This setting cools the
air entering your vehicle and directs it through the
instrument panel outlets.
If you have the electronic system, press the A/C button
to turn the system on. The system will cool and
dehumidify the air inside the vehicle. Also while in
AUTO mode, the system will use RECIRC as necessary
to cool the air.On cool, but sunny days, with the standard system or
through manual operation of the electronic system,
use BI
-LEVEL to deliver warm air to the floor and
cooler air to the middle instrument panel outlets. To
warm or cool the air delivered, push the TEMP button
up or down.
When the air conditioning system is in AUTO mode, the
A/C light will always be on. When the ambient
temperature outside the vehicle reaches 40
F (4
C), the
compressor will remain on continuously.
Heating
If you have the standard system, on cold days use
HEATER with the temperature knob in the red area. If
you have the electronic system, press AUTO and adjust
the temperature by pressing the TEMP up or down
button. You may also adjust the electronic system
manually by pressing the MODE button and selecting
HEAT. Again, adjust the temperature by pressing the
TEMP up or down button.
With each system, outside air will be brought in and sent
through the floor outlets. The heater works best if you
keep your windows closed while using it.

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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3-8
Ventilation Tips

Keep the hood and front air inlet free of ice, snow or
any other obstruction such as leaves. The heater and
defroster will work better, reducing the chance of
fogging your windows.

When you enter a vehicle with the standard system
in cold weather, select HEATER to supply air
through the floor outlets. Then turn the fan on high
for a few moments before driving away. This will
blow moist air from the intake outlets toward the
floor, not the windshield. It reduces the chance of
fogging your windows. If you have the electronic
system, the AUTO setting will do this for you.
Manual operation of the electronic system in the
HEAT mode will also supply air through the
floor outlets.

Keep the air path under the front seats clear of
objects. This helps air to circulate throughout
your vehicle.

When the engine idles for a long time, the exterior
temperature sensor may cause the system to blow air
that is too cool. Once the vehicle is moving again the
system will try to maintain the set temperature inside
your vehicle.
When you start your vehicle and the EXT TEMP
display flashes (electronic system only) for some
time, the system may need repair. See your dealer.
Defogging and Defrosting
On cool, humid days, use DEFOG to keep the
windshield and side windows clear. Use DEFROST to
remove fog or ice from the windshield quickly in
extremely humid or cold conditions.
If you have the standard system, use DEFOG and adjust
the fan speed to your comfort level. Use DEFROST
with the temperature toward the red area and the fan
control toward high.
If you have the electronic system, press the DEFOG
button and adjust the fan speed by pressing the fan
button up or down to your comfort level. If you select
DEFROST from AUTO, the system will control the fan
speed. Adjust the temperature to your comfort level by
pressing the TEMP up or down button

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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4-15
If your vehicle starts to slide, ease your foot off the
accelerator pedal and quickly steer the way you want the
vehicle to go. If you start steering quickly enough, your
vehicle may straighten out. Always be ready for a
second skid if it occurs.
Of course, traction is reduced when water, snow, ice,
gravel or other material is on the road. For safety, you'll
want to slow down and adjust your driving to these
conditions. It is important to slow down on slippery
surfaces because stopping distance will be longer and
vehicle control more limited.
While driving on a surface with reduced traction, try
your best to avoid sudden steering, acceleration or
braking (including engine braking by shifting to a lower
gear). Any sudden changes could cause the tires to slide.
You may not realize the surface is slippery until your
vehicle is skidding. Learn to recognize warning
clues
-- such as enough water, ice or packed snow on
the road to make a ªmirrored surfaceº
-- and slow
down when you have any doubt.
Remember: Any anti
-lock brake system (ABS) helps
avoid only the braking skid.
Driving at Night
H±44±0003±V
Night driving is more dangerous than day driving. One
reason is that some drivers are likely to be impaired
-- by
alcohol or drugs, with night vision problems, or by fatigue.