air conditioning CHEVROLET IMPALA 2003 8.G Owners Manual

Climate Controls
Dual Climate Control System
With this system you can control the heating, cooling,
defrost, defog and ventilation for your vehicle.
Manual Operation
Turn the right knob clockwise or counterclockwise to
direct the air¯ow inside of your vehicle.
To change the current mode, select one of the following:
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode allows for approximately a
50/50 split of air to the instrument panel outlets and
to the ¯oor outlets.
6(Floor):This mode directs most of the air to the
¯oor outlets, with some of the air directed to the
windshield and side window outlets. In this mode, the
system will automatically select Outside Air.
The right knob can also be used to select defog or
defrost mode. For more information, see ªDefogging and
Defrostingº later in this section.
It should be noted, that the air conditioning compressor
will be engaged unless the outside temperature is
40É F (4ÉC) or below. Recirculation cannot be selected
when in Floor Mode.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
If the air¯ow seems low when the fan is at the highest
setting, the passenger compartment air ®lter, if
equipped, may need to be replaced. For more
information, see
Passenger Compartment Air Filter on
page 3-26andPart A: Scheduled Maintenance Services
on page 6-4.
3-22

:(Outside Air):Press this button to turn the
outside air mode on. When this mode is on, outside air
will circulate throughout your vehicle. When the
button is pressed, an indicator light in the button will
come on to let you know that it is activated. The outside
air mode can be used with all modes, but it cannot
be used with the recirculation mode.
You may have to set the instrument panel brightness
control to the highest setting during the day to see
the indicator lamp.
The outside air mode can be used with all modes, but it
cannot be used with the recirculation mode.
If you are in city traffic, your vehicle is stopped and
idling, or the weather is hot, the system may switch from
the outside air mode to the recirculation mode. To
prevent the air inside of your vehicle from becoming too
stale, be sure to return to the outside air mode
periodically.?(Recirculation):This mode keeps outside air
from coming in the vehicle. It can be used to prevent
outside air and odors from entering your vehicle or help
heat or cool the air inside your vehicle more quickly.
Press this button to turn the recirculation mode on.
When the button is pressed, an indicator light will come
on. The air-conditioning compressor also comes on.
You may have to set the instrument panel brightness
control to the highest setting during the day to see
the indicator lamp.
The recirculation mode cannot be used with outside air
modes.
D or P (Temperature Control):Slide the levers
marked D (Driver) or P (Passenger) to increase or
decrease the temperature on the driver's side or
the passenger's side of the vehicle.
#A/C (Air Conditioning):Press this button to turn
the air-conditioning system on or off. When A/C is
pressed, an indicator light will come on to let you know
that air conditioning is activated.
You may have to set the instrument panel brightness
control to the highest setting during the day to see
the indicator lamp.
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On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.
For quick cool down on hot days, do the following:
1. Select the vent mode.
2. Select the recirculation mode.
3. Select A/C.
4. Select the coolest temperature for both zones.
5. Select the highest fan speeds.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air
inside of your vehicle has cooled, turn the recirculation
mode off.
The air-conditioning system removes moisture from the
air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.Defogging and Defrosting
Fog on the inside of the 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 defog
mode to clear the windows of fog or moisture and warm
the passengers. Use the defrost mode to remove fog
or frost from the windshield more quickly.
Turn the right knob clockwise to select the defog or
defrost mode.
-(Defog):This mode directs air equally to the
windshield and the ¯oor outlets. When you select this
mode, the system turns off recirculation and runs
the air-conditioning compressor unless the outside
temperature is below 40ÉF (4ÉC). The recirculation mode
cannot be selected while in the defog mode.
Do not drive the vehicle until all the windows are clear.
0(Defrost):This mode directs half of the air to
the windshield and side window vents and half to the
¯oor vents. In this mode, the system will automatically
force outside air into your vehicle. The recirculation
mode cannot be selected while in the defog mode. The
air conditioning compressor will run automatically in
this setting, unless the outside temperature is below
40ÉF (4ÉC).
Do not drive the vehicle until all the windows are clear.
3-24

Capacities and Speci®cations
Please refer toPart D: Recommended Fluids and
Lubricants on page 6-16for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R-134a 2.4 lbs 1.1 kg
Automatic Transaxle
Pan Removal and Replacement
After Complete Overhaul
When draining/replacing converter, more ¯uid may be
needed.
7.4 quarts
10 quarts7.0 L
9.5 L
Cooling System Including Reservoir
3400 (Code E) V6
3800 (Code K) V611.3 quarts
11.7 quarts10.7 L
11.0 L
Engine Oil with Filter
3400 (Code E) V6
3800 (Code K) V64.0 quarts
4.5 quarts3.8 L
4.2 L
Fuel Tank 17.0 gallons 64.0 L
All capacities are approximate. When adding, be sure to ®ll to the approximate level, as recommended in this
manual. See
Part D: Recommended Fluids and Lubricants on page 6-16.
5-103

Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts
as needed. Replace any components that have high
effort or excessive wear. Do not lubricate accelerator
and cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-15