2001 PONTIAC BONNEVILLE climate control

2-36
Running Your Engine While
You're Parked
It's better not to park with the engine running. But if you
ever have to, here are some things to know.
CAUTION:
Idling the engine with the climate control system
off could allow dangerous exhaust into
your vehicle. See the earlier Caution under
ªEngine Exhaust.º
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the fan switch is at the highest setting. One place
this can happen is a garage. Exhaust
-- with
CO
-- can come in easily. NEVER park in a
garage with the engine running.
Another closed-in place can be a blizzard.
See ªBlizzardº in the Index.
CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don't leave your vehicle when the engine is
running unless you have to. If you've left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle won't move, even when you're on fairly
level ground, always set your parking brake and
move the shift lever to PARK (P).
Follow the proper steps to be sure your vehicle won't
move. See ªShifting Into PARK (P)º in the Index.
If you are parking on a hill and if you're pulling a
trailer, also see ªTowing a Trailerº in the Index.

3-2
Comfort Controls
This section tells you how to make your air system
work for you.
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.
Your vehicle may be equipped with a passenger
compartment air filter. For more information, see
ªPassenger Compartment Air Filterº in the Index.
Comfort Controls Personalization
(If Equipped)
This feature allows two different drivers to store and
recall their own climate control settings for temperature,
air delivery mode and fan speed. The personal choice
settings recalled are determined by the transmitter used
to enter the vehicle. After the button with the unlock
symbol on a remote keyless entry transmitter is pressed,
and the ignition is in ON, the climate control will adjust
to the last settings of the identified driver. The settings
can also be changed by pressing one of the memory
buttons (1 or 2) located on the driver's door, until you
hear two beeps. When adjustments are made, the new
settings are automatically saved for that driver.
Standard Climate Control System
Fan Knob
The left knob regulates the force of the air coming
through the system. Turn the knob clockwise to increase
the fan speed and counterclockwise to decrease the fan
speed. Push this knob to turn the fan off. The fan must
be on to run the air conditioning compressor.
Temperature Knob
The right knob 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.

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 RECIRC under these conditions and turn the
A/C on to help dehumidify the air.
A/C Button
A/C: 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
PANEL 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)
Temperature Knob (Driver's Side)
The driver's side knob changes the temperature of the
air coming through the system on the driver's side.
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
Temperature Knob (Passenger's Side)
The passenger's side knob changes the temperature of
the air coming through the system on the passenger's
side of the vehicle. 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 Button
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 Button
Press this button to manually select the air delivery
mode to the floor, panel or windshield outlets. The
system will stay in the selected mode until the MODE or
AUTO button is pushed.Auto Button
Press the AUTO button to set the system to automatically
control the air delivery mode, fan speed, A/C and
RECIRC operations. Whenever you press AUTO, the
display will change to show the current driver set
temperature, automatic air delivery mode and fan speed.
After five seconds the display will change back to the
EXT (external) temperature outside the vehicle.
Display
In full AUTO mode, the electronic climate control system
display will show the outside temperature, labeled EXT for
external temperature, and AUTO. If you press the
MODE button to select an air delivery mode, the display
will change to also show you the current system mode.
If you press HIGH or LOW on the fan button, the
display will change to show the selected fan speed.
After five seconds, the display will change back to show
the EXT temperature and the selected manual setting.

3-6
Automatic Operation
When the system is set for AUTO, your climate control
system will control the air delivery mode, fan speed, A/C
and RECIRC operations. Air will come from the floor,
panel or windshield outlets. The fan speed will vary as the
system maintains the selected temperature setting.
When AUTO is selected, the A/C operation and air inlet
will be automatically controlled. 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's hot outside, the air inlet will
automatically switch to recirculated inside air to help
quickly cool down your vehicle.
To find your comfort zone, start with 75
F (24
C)
temperature setting and allow about 20 minutes for the
system to regulate. Turn the TEMP knob 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.Be careful not to cover the sensor located on the top of
the instrument panel near the windshield. This sensor
regulates temperature based on sun load.
The EXT (exterior) temperature sensor is located in
the front of the vehicle behind the grille. The displayed
temperature is most accurate after the vehicle has been
moving for a few minutes. If the vehicle is stopped and
then restarted within 2 1/2 hours, the sensor will be hot
from the engine heat. In this case, the temperature first
displayed will continue to be the previous temperature.
The display will update after the vehicle has been
moving for a few minutes and the sensor has a chance
to cool down to the actual temperature.
To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on engine coolant
temperature. Pushing the fan button will override
this delay and change the fan to a selected speed.

6-51
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.Temperature
-- A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of
heat and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under the
Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance
on the laboratory test wheel than the minimum required
by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.