2002 PONTIAC BONNEVILLE Owners Manual

3-3
Mode Buttons
You may choose the direction of air delivery by
selecting one of the five mode buttons.
(Defog): This setting directs most of the airflow to
the floor ducts and the windshield defroster. A small
amount of airflow is directed to the side window
defroster outlets. This mode can be useful to remove the
moisture from the inside of the windshield when the
outside temperature is cold or the humidity is high.
(Floor): This setting directs most of the airflow to
the floor ducts with some airflow directed to the side
window defrosters. There is also a small amount of
airflow directed to the front defroster.
(Bi-Level): This setting directs airflow through
both the instrument panel outlets and the floor ducts.
There is also a small amount of air directed to the front
defroster and the side window defrosters.
(Vent): This setting directs airflow through the
instrument panel outlets.
FRONT (Defrost): This setting directs most of
the airflow to the windshield defroster with some
airflow to the side window defrosters and floor ducts.
To improve windshield clearing performance when you
select FRONT defrost, your air conditioning compressor
will run automatically above approximately 40
F (4
C).
This dehumidifies the air to help dry the windshield.
Even though the compressor may be running, the A/C
light will not come on in FRONT defrost unless you
select A/C.
RECIRC (Recirculation): Press this button
to limit the amount of outside air entering your vehicle.
This is helpful when you are trying to quickly cool the
interior of the vehicle or to limit odors entering the
vehicle. RECIRC may be selected in all manual airflow
modes except FRONT defrost. If you select RECIRC
while in defrost, the RECIRC light will flash to let
you know that this is not allowed. This is to help
prevent fogging.

3-4
When the weather is cool or damp, operating in
RECIRC for extended periods of time may cause
fogging of the vehicle's windows. To clear the fog,
switch back to outside air by turning off RECIRC, select
either defog or FRONT defrost mode and increase the
fan speed. To avoid refogging of the windows, minimize
your use of recirculation under these conditions and turn
the A/C on to help dehumidify the air.
A/C (Air Conditioning): Press this button to turn
the air conditioning compressor on and off. The system
will cool and dehumidify the air inside your vehicle. If
your comfort control system is off, you can also turn it
back on in vent mode by selecting the A/C button.
Even though A/C is not selected, in FRONT defrost
mode the A/C compressor will run automatically at
temperatures over approximately 40
F (4
C) to
improve windshield clearing performance.
Electronic Climate Control System (Option)
DRIVER (Driver's Side Temperature): The knob
on the left is used to change the temperature of the air
coming through the system on the driver's side of the
vehicle. Push this knob to turn the system on and off.
Turn the knob toward the blue area to decrease the set
temperature. Turn the knob toward the red area to
increase the set temperature. When this knob is
adjusted, the word DRIVER will be displayed
under the set temperature.
When the passenger's set temperature is not active,
this knob controls both the driver's and passenger's side,
and both DRIVER and PASS will be displayed under the
set temperature.

3-5
PASS (Passenger's Side Temperature): The knob on
the right is used to change the temperature of the air
coming through the system on the passenger's side of
the vehicle. Push this knob to turn the system on and off.
Turn the knob toward the blue area to decrease the set
temperature. Turn the knob toward the red area to
increase the set temperature. When this knob is
adjusted, only the word PASS will be displayed
under the set temperature.
(Fan): The button with the fan symbol allows
you to manually adjust the fan speed. Press the HIGH
side to increase fan speed and the LOW side to decrease
fan speed.
MODE: Press this button repeatedly to cycle through
the choices on the display to select the air delivery mode
of airflow into the vehicle. The system will stay in the
selected mode until MODE is pressed again or until the
AUTO button is pressed.

FLOOR: This setting directs most of the airflow to
the floor ducts.

DEFOG: This setting directs most of the airflow to
the floor ducts and the windshield outlets.
BI
-LEVEL: This setting directs airflow through
both the instrument panel outlets and the floor ducts.
This mode will deliver slightly warmer air through
the floor ducts.

PANEL: This setting directs airflow through the
instrument panel outlets.
Whenever MODE is pressed, the display will show the
current system settings for five seconds before returning
the display to the exterior temperature.
FRONT (Defrost): This setting directs most
of the airflow to the windshield with some airflow to the
side window outlets and floor ducts.
To improve windshield clearing performance when you
select FRONT defrost, the air conditioning compressor
will run automatically when outside temperatures are
above approximately 40F (4C). This dehumidifies
the air to help dry the windshield. Even though the
compressor may be running, the A/C light will not
come on in FRONT defrost unless you select A/C.
OUTSIDE AIR: Press this button to send
outside air through the system.

3-6
RECIRC (Recirculation): Press this button to
limit the amount of outside air entering your vehicle.
This is helpful when you are trying to quickly cool the
interior of the vehicle or limit odors entering the vehicle.
RECIRC may be selected in all manual airflow modes
except FRONT defrost. If you select RECIRC while in
FRONT defrost, the RECIRC light will flash to let you
know that this is not allowed by the system. This is to
prevent fogging.
When the weather is cool or damp, operating the system
in recirculation, without also using the air conditioning,
may cause fogging of the windshield. To clear the fog,
switch back to outside air, select defog or FRONT
defrost mode and increase the fan speed. To avoid
refogging of the windows, minimize your use of
recirculation under these conditions and turn the air
conditioning on to help dehumidify the air.
A/C (Air Conditioning): Press this button to
turn the air conditioning compressor on and off. This
system will cool and dehumidify the air inside your
vehicle. The air conditioning compressor will also run
when you select the FRONT defrost mode and outside
temperatures are approximately 40
F (4
C) or
higher. When in AUTO mode, air conditioning will
automatically be used as needed to maintain the selected
temperature setting.AUTO (Automatic Control): Press the AUTO
button for automatic control of the air delivery mode,
fan speed, air conditioning and recirculation. Whenever
AUTO is pressed, the display will show the current
settings for five seconds before returning the display to
exterior temperature and AUTO.
The fan speed and mode of airflow delivery will vary as
the system maintains the selected temperature setting.
The air conditioning compressor will run at outside
temperatures over approximately 40
F (4
C). The air
inlet will normally be set to OUTSIDE AIR. If it is hot
enough outside, the air inlet mode will automatically
switch to recirculation.
To find you comfort zone for the automatic settings,
start with a temperature setting of 75
F (24
C) and
allow about 20 minutes for the system to regulate.
Then turn the TEMP knobs up or down to adjust the
temperature setting if necessary. If you choose the
temperature setting of 60
F (15
C), the system will
remain at the maximum cooling setting and fan speed.
If you choose the temperature setting of 90
F (33
C),
the system will remain at the maximum heat setting and
fan speed. Choosing either maximum setting will not
cause the system to heat or cool any faster.

3-7
Be sure not to cover the sensor located on the top of the
instrument panel near the windshield. This sensor
regulates interior temperatures based on sun load.
To avoid blowing cold air through the system in cold
weather, the automatic system will delay turning on the
fan until warm air is available. The length of delay
depends on engine coolant temperature. Pressing the fan
button will override this delay and cancel the automatic
mode, returning the system to manual mode.
The EXT (exterior) temperature sensor is located in the
front of the vehicle behind the grill. The EXT temperature
displayed may not be accurate for a few minutes if you
have restarted the engine after it was already warmed.
Air Conditioning
On hot days, open the windows long enough to let hot
air inside the vehicle 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 the airflow from the instrument panel
outlets, press RECIRC and A/C with the temperature knob in
the blue area. If this maximum A/C 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 without
recirculation with the temperature knob in the blue area.If you have the electronic system, in AUTO mode
the system will cool and dehumidify the air inside
the vehicle. Also while in AUTO mode, the system
will maximize its performance by using recirculation
as necessary.
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 instrument panel outlets. To warm or cool the air
delivered, turn the temperature knobs.
Heating
If you have the standard system, on cold days use the
floor ducts with the temperature knob in the red area. If
you have the electronic system, press AUTO and adjust
the temperature by turning the temperature knob up or
down. You may also adjust the electronic system
manually by pressing the MODE button and selecting
FLOOR. Again, adjust the temperature by turning the
temperature knobs.
With either system, outside air will be heated and sent
through the floor ducts. The heater works best if you
keep your windows closed while using it.

3-8 Defogging and Defrosting
On cool, humid days, use defog to keep the windshield
and side windows clear. Use FRONT defrost to remove
fog or ice from the windshield quickly in extremely
humid or cold conditions.
If you have the standard system, select defog and adjust
the temperature and fan speed to your comfort level.
Turn the A/C on to help dehumidify the air. Use FRONT
defrost with the temperature toward the red area and the
fan speed toward high.
If you have the electronic system and select FRONT
defrost or defog from AUTO, the system will control the
fan speed.
After the windshield is clear, adjust the temperature to
your normal setting and select the AUTO button and
return to AUTO mode and fan control.
For maximum FRONT defrost performance under
extreme icing or frosting conditions, increase the
temperature setting to 90
F (33
C) and increase
the fan speed to high.
Rear Window Defogger
The lines you see on the rear window warm the glass.
Press the button to start
warming your window.
A light will glow in the
button while the defogger
is working.
If your vehicle is equipped with heated mirrors, this
button will activate them.
After 10 minutes the system will turn off by itself, or
press the button during the heating cycle to turn it off.
If you need additional warming time, push the button
again. The system will then operate for five minutes
before turning off by itself. If your speed is maintained
over 30 mph (48 km/h), the rear defog will not turn off
automatically to help keep the rear glass clear.

3-9
NOTICE:
Do not try to clear frost or other material from
the inside of the rear window with a razor blade
or anything else that is sharp. This may damage
the defogger grid. The repairs wouldn't be
covered by your warranty.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.
Ventilation System
For mild outside temperatures when little heating or
cooling is needed, use the vent setting (on the standard
system) to direct outside air through your vehicle. Air will
flow through the instrument panel outlets.
Your vehicle's flow
-through ventilation system supplies
outside air into the vehicle while it's moving. While the
vehicle is not moving, you can get outside air to flow
through by selecting any air delivery mode and any
fan speed.
Your vehicle has air outlets that allow you to adjust the
direction and amount of airflow inside the vehicle.
Move the knob in the center of each outlet up, down or
side
-to-side to direct the air from the outlet. Use the
thumbwheel in the center to shut the outlet off. For the
most efficient airflow and temperature control, keep the
shut off door in the fully opened position.

3-10
In vehicles equipped with rear seat outlets, you can
adjust the airflow toward either seating area, the floor or
upward. Move the knob in the center of each outlet in
any direction to direct airflow. Increase or decrease the
amount of airflow from the upper outlets by adjusting
the lever between the two rear vents up or down to the
floor ducts.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.

In cool damp weather, minimize your use
of recirculation to reduce the chance of fogging
your windows.

When you enter a vehicle with the standard system
in cold weather, select floor mode to supply air
through the floor ducts. 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 floor mode will also
supply air through the floor ducts.

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