climate control CADILLAC DEVILLE 2002 8.G User Guide

3-3
!~(Fan): This switch adjusts the fan speed. Press the
up arrow to increase fan speed and the down arrow to
decrease it.
(Recirculation): Press this button to limit the
amount of outside air entering your vehicle. This is
helpful when you are trying to cool the air quickly or
limit odors entering your vehicle. Press this button again
to turn off the recirculation feature. If you notice the
windows fogging, turn off the recirculation feature.
Recirculation is not available in the defrost mode.
FRONT (Defrost): Press this button to quickly
remove fog or frost from the windshield. This setting
sends most of the airflow to the windshield with only a
small amount to the floor outlets. The air conditioning
compressor will operate in this mode.
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 the vehicle. A/C
cannot be turned off in defrost mode.PASS OFF (Passenger's Climate Control): Pressing
this button will turn off or on the climate controls for the
passengers. When this feature is active, the driver's
climate control settings are used for both the front and
rear seating areas.
Driver's Temperature Knob: The knob located on the
left side of the climate control panel is used to adjust the
air temperature coming through the system for the
driver's side of the vehicle while the passenger's side
controls are active. Turn the knob clockwise to increase
the temperature displayed on the climate control panel,
or turn the knob counterclockwise to decrease the
temperature. Press the knob to turn the climate control
system off.
~PASS TEMP! (Passenger's Temperature): This
switch is used to increase or decrease the temperature of
the air for the right front passenger independent of the
driver's setting.
Press the up arrow to increase the temperature setting or
the down arrow to decrease it.

3-4
Automatic Operation
AUTO: This button is used to select the automatic
operation of the climate control system. When the
automatic operation is active, AUTO will appear on
the display.
A sensor will control the air delivery mode. Air will
come from the floor, the instrument panel or windshield
outlets. The fan speed and use of air conditioning
will vary as the system maintains the selected
temperature setting.
Do not cover the electronic solar sensor located on top
of the instrument panel near the windshield. The sensor
is used by the automatic system to regulate temperature.
See ªElectronic Solar Sensorº later in this section for
more information.
To find your comfort zone, start with the 75
F (24
C)
setting and allow about 30 minutes for the system to
regulate. Turn the driver's temperature knob to adjust
the temperature if necessary. If you choose 60
F
(16
C), the system will remain at that maximum cooling
setting and will not regulate fan speed. If you choose
90
F (32
C), the system will remain at that maximum
heating setting and will not regulate fan speed. Choosing
either maximum setting will not cause the system to heat
or cool any faster.In cold weather, when the system senses the need for
heat, the airflow will be directed out of the floor outlets.
As the interior temperature approaches the desired
setting, the fan speed will decrease. To maintain interior
comfort, the airflow may move to the instrument panel
air outlets and floor outlets (bi
-level mode). On bright
sunny days in cold weather, the airflow may come out of
the instrument panel outlets in A/C mode to maintain
comfort and prevent stuffiness.
When the automatic setting is active, the air
conditioning compressor cycles when needed to cool the
air. If your vehicle is sitting out on a hot day and AUTO
is active, the air will first flow out of the floor outlets for
a few seconds. This is normal. This is to remove hot air
from the air outlets. As the air is cooled, the airflow will
move through the instrument panel outlets. If you start
your vehicle with the fan setting on HI, it will skip the
air conditioning purge and the system will be in
manual mode.

3-5
To avoid blowing cold air in cold weather, the system
will start at reduced fan speeds until warm air is
available. The length of reduction depends on the
outside air temperature, engine coolant temperature
or the time since the engine was last started. As the
coolant warms up, the fan speed will gradually increase
and air will flow from the floor outlets, with some
airflow to the windshield to prevent fogging under most
normal conditions.
If you select defrost mode or a fan speed, this function
will be skipped and the system will be in manual mode.
If you leave your vehicle, the system will recall the
control setting the next time you start your engine,
except for recirculation and defrost.Electronic Solar Sensor
The sensor monitors the sun's solar radiation. It is located
on top of the instrument panel near the windshield.
When the climate control system is in AUTO, the system
uses this information to automatically make the necessary
temperature and airflow adjustments to maintain your
comfort. The climate control system may supply cooler air
to one side of your vehicle, if that side is facing the sun.
Be sure not to cover the sensor on top of the instrument
panel. If you do, it will not work properly.

3-7 Rear Window Defogger
The grid lines you see on the rear window warm the
glass. When the rear window defogger is turned on,
the rear window and both outside rearview mirrors are
heated to remove snow and ice from the surface of
the glass.
REAR (Rear Window
Defogger): The rear
window defogger button is
located on the climate
control panel near the
bottom left corner.
Press the button to turn on the rear defogger. Press the
button again to turn the system off.The system will automatically shut off after 10 minutes
unless your vehicle is traveling more than 30 mph
(48 km/h). If further defogging is desired once the
system is off, press the button again. The system will
automatically shut off after five minutes for any cycles
after the initial activation.
NOTICE:
Don't use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid or the
integrated rear window antenna, and the repairs
wouldn't be covered by your warranty.
The lines along the top of the window are for the
diversity antenna and are not intended to defog the
rear window.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.

3-8 Rear Climate Control
Your vehicle is equipped with a rear climate control.
With this system, the rear passengers can control the
temperature of the air flow for his/her own zones.The rear climate control has three switches:
~ MODE !: Press this switch to select the direction
of the airflow. Press the up or down arrow to cycle
through the available modes. The current mode appears
on the display above the climate control panel. If you
press the down arrow until AUTO is displayed,
automatic mode will be active. The automatic mode
selects the airflow mode for you.
See ªManual Operationº previously in this section for
more information on the modes available.
!
~
(Fan): Press this switch to manually adjust the fan
speed. Press the up arrow to increase the speed or the
down arrow to decrease it. The current speed will appear
on the display above the climate control panel. You can
turn the system off by pressing the down arrow until
OFF appears on the display.

3-9
~ TEMP ! (Temperature): Press this switch to
manually adjust the temperature. Press the up arrow to
increase the temperature or the down arrow to decrease
it. The current temperature will appear on the display
above the climate control panel.
The front seat climate control panel has an AUTO
button that can override the climate controls of the rear
seating area automatically. When AUTO is pressed, the
rear automatic mode is selected and the rear air
temperature and mode will readjust to coincide with the
setting selected for the front seating area.
The PASS OFF button on the front climate control panel
allows the settings for the driver to be used for the front
and rear seat areas.Ventilation System
Your vehicle's flow-through ventilation system supplies
outside air into the vehicle when it is moving. Outside
air will also enter the vehicle when the heater or the air
conditioning fan is in operation. See ªRecirculationº
listed previously in this section for more information.
The front outlets are located in the center and at each
side of the instrument panel. You can adjust the
direction of airflow by moving the center control levers
or you can stop the airflow by moving the thumbwheel
located on each outlet downward.

3-11 Climate Control Personalization
(If Equipped)
This feature allows two different drivers to store and
recall their own climate control settings. These settings
include the set temperatures for the driver and front
passenger, the air conditioning, the airflow mode and
the fan speed. (This feature does not recall recirculation
or defrost).
Each driver (1 or 2) has a corresponding number located
on the back of the remote keyless entry transmitter.
Settings recalled by the system can be determined by
which transmitter is used to unlock the vehicle. When
the button with the unlock symbol is pressed, the
settings will be automatically recalled for that driver.
The settings can also be recalled when the key is placed
in the ignition. If the settings are recalled this way, the
system will recall the settings of the last driver to use the
vehicle. If these are not the correct settings for you,
press the button with the unlock symbol on remote
keyless entry transmitter that was used when you saved
your settings.The settings can also be recalled by briefly pressing the
corresponding memory button (1 or 2) located on the
driver's door panel.
Further programming for recalling climate control
personalization settings can be done using the DIC.
You can select or not select the following:

Automatic recall of the climate control settings when
the vehicle is unlocked with the remote keyless entry
transmitter, or

Automatic recall of the climate control settings when
a key is placed in the ignition.
For more programming information, see ªMemory and
Personalization Featuresº in the Index.

6-55 Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire
sidewall between tread shoulder and maximum section
width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance.
(This applies only to vehicles sold in the United States.)
The grades are molded on the sidewalls of most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter
-type snow
tires, space
-saver or temporary use spare tires, tires with
nominal rim diameters of 10 to 12 inches (25 to 30 cm),
or to some limited
-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course.
For example, a tire graded 150 would wear one and a
half (1 1/2) times as well on the government course
as a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart significantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
-- AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire's ability to
stop on wet pavement as measured under controlled
conditions on specified government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight
-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.