2005 PONTIAC GRAND PRIX climate control

Climate Controls
Climate Control System
The climate control system allows manual control of the
heating, cooling, and ventilation in the vehicle.
Fan
9
(Fan):Turn the knob by this symbol, located on the
left side of the climate control panel, clockwise or
counterclockwise to increase or decrease the fan speed.
During the highest fan speed selections, the fan
speed will be temporarily reduced between the transition
to a new mode. The fan will resume the original
speed when the transition to the new mode is complete.
9(Off):Turn the knob to this position to turn the
fan off.
Mode
Turn the middle knob to select the following modes:
H(Vent) Outside Air:This mode directs outside air to
the instrument panel outlets. If driving in city traffic,
and the vehicle is stopped and idling, or the weather is
hot, switch from this mode to the recirculation mode.
To prevent the air inside the vehicle from becoming
stale, be sure to return to the vent mode periodically.
)(Bi-Level):This mode directs half of the air to the
instrument panel outlets, and the remaining air to the oor
outlets. Some air may be directed toward the windshield.
Slightly cooler air is directed to the instrument panel
outlets and warmer air is directed to the oor outlets.
6(Floor):This mode directs most of the air to the oor
outlets with some air directed toward the side window
outlets and a little air directed to the windshield.
In this mode, the system will automatically use outside
air. The air conditioning compressor will be engaged
unless the outside temperature is 40°F (4°C) or below.
Recirculation cannot be selected when in this mode.
The middle knob on the climate control panel can also
be used to select the defog or defrost mode.
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Defogging and Defrosting
Fog on the inside of the vehicle is a result of high
humidity causing moisture to condense on the cool
window glass. This can be minimized if the climate
control system is used properly. There are two modes
to clear frost or fog from the windshield. Use the
defog mode to clear the windows of condensation and
to warm the vehicle’s occupants. Use the defrost
mode to remove frost or condensation from the
windshield quickly. Recirculation cannot be selected
when in these modes.
See “Rear Window Defogger” later in this section for
information on clearing the rear window of fog or ice.
.(Floor/Defog):Use the oor/defog mode to clear the
windows of fog or moisture and warm the passengers.
This mode directs the air equally between the
windshield and the oor outlets, along with some
directed to the side window outlets.
This mode will automatically use outside air. The air
conditioning compressor will be engaged unless
the outside temperature is 40°F (4°C) or below.
1(Defrost):Use the defrost mode to remove fog or
frost from the windshield more quickly. This mode
directs most of the air to the windshield and the side
window outlets, with some air directed to the oor
outlets. This mode has a timer and will shut off after
ve minutes.
This mode will automatically use outside air. The air
conditioning compressor will be engaged unless
the outside temperature is 40°F (4°C) or below.
Temperature
The knob on the right of the climate control panel is the
temperature adjustment that can be used with any of
the climate control modes.
Turn the knob clockwise for warmer settings and
counterclockwise for colder settings.
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Air Conditioning
#
(Air Conditioner):Press this button on the climate
control panel to turn the air conditioning compressor on or
off. An indicator light to the right of the button will come on
to show that the air conditioning is on. This button has no
control over the air conditioning compressor when in the
other modes. The instrument panel brightness control
may have to be adjusted to the highest setting in order to
see the indicator. SeeInstrument Panel Brightness on
page 3-17for additional information.
On hot days during the vehicle’s initial start-up, open
the windows to let hot inside air escape; then close
them. This helps to reduce the time it takes for
the vehicle to cool down. It also helps the system to
operate more efficiently.
For quicker cool down on hot days, do the following:
1. Select the vent/outside air mode.
2. Select the recirculation mode.
3. Select the air conditioner.
4. Select the coolest temperature.
5. Select the highest fan speed.
Using these settings together for long periods of time
may cause the air inside the vehicle to become too dry.
To prevent this from happening, select the vent mode
once the interior of the vehicle is cooled.The air conditioning system removes moisture from the
air, so sometimes there may be a small amount of
water dripping underneath the vehicle while it is idling
or after the engine is turned off. This is normal.
Recirculation
h
(Recirculation):Press this button on the climate
control panel to activate the recirculation mode. With
this selection, inside air is recirculated into the vehicle
along with some outside air. This mode reduces
outside air and odors from entering the vehicle. It may
also help to heat or cool the air inside the vehicle
more quickly.
An indicator light to the right of the button will come
on to show that the recirculation mode is on. The
instrument panel brightness control may have to be
adjusted to the highest setting to see the indicator.
The recirculation mode has a timer. After ve minutes,
the system’s air inlet door will move slightly to allow
for ten percent fresh outside air to maintain interior air
quality. The only way to reset the system to full
recirculation is to restart the ve minute timer by
selecting vent/outside air and recirculation again.
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Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window. Be sure to
clear as much snow from the rear window as possible.
Notice:Using a razor blade or sharp object to
clear the inside rear window may damage the rear
window defogger. Repairs would not be covered
by your warranty. Do not clear the inside of the rear
window with sharp objects.
=(Rear Window Defogger):Press this button to turn
the rear window defogger on or off.
An indicator light to the right of the button will come on
to show that the rear window defogger is on. The
instrument panel brightness control may have to be
adjusted to the highest setting during the daytime
in order to see the indicator light.
The rear window defogger will turn off approximately
20 minutes after the button is pressed. If the button is
pressed again, it will run another 20 minutes. The
defogger can be turned off by pressing the button
again or by turning off the engine.
Do not drive the vehicle until all windows are clear.
Dual Automatic Climate
Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Automatic Operation
AUTO (Automatic):Turn both the fan and mode knob to
AUTO for automatic control of the inside temperature, the
air delivery mode and the fan speed. You may notice a
delay of two to three minutes before the fan comes on
when the automatic operation is used in cold weather.
For the automatic system to function, the temperature
must be set between 60°F (15°C) and 90°F (32°C).
1. Adjust the temperature to a comfortable setting.
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2. Press the PASS. button to turn the passenger
climate control system on and off. When the
passenger system is off, the driver’s temperature
setting is also used for the passenger and the
passenger display is off.
In cold weather, the system will start at reduced fan
speeds to avoid blowing cold air into your vehicle
until warmer air is available. The system will
start out blowing air at the oor but may change
modes automatically as the vehicle warms up
to maintain the chosen temperature setting. The
length of time needed for warm up will depend on
the outside temperature and the length of time
that has elapsed since your vehicle was last driven.
3. Wait for the system to regulate. This may take from
10 to 30 minutes. Then adjust the temperature, if
necessary.
Do not cover the solar sensor located in the center of
the instrument panel, near the windshield. For more
information on the solar sensor, see “Sensors” later in
this section.Manual Operation
xw
(Temperature):To manually adjust the
temperature inside the vehicle, press the up arrow on
the temperature control to raise the temperature
and press the down arrow to lower the temperature.
The display will show your selection.
When one temperature is displayed, the driver
temperature is set. When both temperatures are
displayed, the temperature for both the driver and
passenger are set. Pressing PASS. will turn the
passenger temperature setting on and off. If only the
driver temperature is set, the driver temperature is used
for the passenger and the passenger display is off.
9(Fan):Turn the fan knob clockwise to increase the
fan speed and counterclockwise to decrease the fan
speed. Turning the fan knob cancels the automatic fan
operation and places the system in manual. Turn the
knob to AUTO to return to automatic fan operation. If the
airow seems low when the fan is at the highest setting,
the passenger compartment air lter, if equipped, may
need to be replaced. SeePassenger Compartment Air
Filter on page 3-33for additional information.
9(Off):Turning the fan knob off will turn the
controller completely off. Only the rear defog and heated
seats will function when the fan knob is off.
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Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass.
This can be minimized if the climate control system is
used properly. There are two modes to clear fog or
frost from your windshield. Use the oor/defog mode to
clear the windows of fog or moisture and warm the
passengers. Use defrost to remove fog or frost from the
windshield more quickly.
-(Floor/Defog):This mode directs the air between
the windshield, oor outlets and side windows. When
you select this mode, the system turns off recirculation
and runs the air-conditioning compressor unless the
outside temperature is near or below freezing. Pressing
the recirculation button, while in this mode, will have
no effect other than turning on the tell-tale light.
1(Defrost):This mode directs most of the air to the
windshield, with some air directed to the side windows.
IN this mode, the system will automatically turn off
the recirculation and run the air conditioning compressor,
unless the outside temperature is near or below
freezing. Pressing the recirculation button, while in this
mode, will have not effect other than turning on the
tell-tale light.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
The rear window defogger will only work when the
engine is running.
=(Rear Window Defogger):Press this button to
turn the rear window defogger on and off. Be sure
to clear as much snow from the rear window as possible.
The rear window defogger will turn off approximately
20 minutes after the button is pressed. If turned on
again, the defogger will only run for approximately
20 minutes before turning off. The defogger can also be
turned off by pressing the button again or by turning
off the engine.
Do not drive the vehicle until all the windows are clear.
Notice:Don’t use anything sharp on the inside
of the rear window. If you do, you could cut
or damage the warming grid, and the repairs
wouldn’t be covered by your warranty. Do not attach
a temporary vehicle license, tape, a decal or
anything similar to the defogger grid.
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Outlet Adjustment
Rotate and turn the air outlets, located in the middle
and at each outboard side of the instrument panel,
to adjust the direction of the airow.
Operation Tips

Clear away any ice, snow, or leaves from the air
inlets at the base of the windshield that may
block the ow of air into the vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the path under the front seats clear of objects
to help circulate the air inside of the vehicle more
effectively.
If the airow seems low when the fan is at the
highest setting, the passenger compartment air lter
may need to be replaced. See “Passenger
Compartment Air Filter” following, for more
information on this lter.
Passenger Compartment Air Filter
The passenger compartment air lter is located near the
passenger’s side windshield wiper arm, underneath
the inlet grille.
The lter traps most of the pollen from entering the
climate control system. Similar to the engine’s air lter,
it may need to be changed periodically to insure
system performance. SeeScheduled Maintenance on
page 6-4for more information.
To change the passenger compartment air lter, do the
following:
1. Turn the ignition to ACC and the windshield
wipers on.
2. Turn the ignition to off when the windshield wipers
are in the upright position.
3. Raise the hood.
4. Disconnect the windshield washer pump hose from
the fender rail and the air inlet grille.
5. Remove the hood weather-strip from the
passenger’s side of the vehicle, peeling it back
halfway.
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Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) 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 signicantly 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 specied 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 testedunder controlled conditions on a specied 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 inated and not
overloaded. Excessive speed, underination, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
If you notice unusual tire wear or your vehicle pulling
one way or the other, the alignment may need to
be reset. If you notice your vehicle vibrating when driving
on a smooth road, your wheels may need to be
rebalanced.
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