Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

Climate Controls

Climate Control Systems

Climate Control Systems . . . . . 147

Dual Automatic Climate

Control System . . . . . . . . . . . . . 150

Air Vents

Air Vents . . . . . . . . . . . . . . . . . . . . . 154

Maintenance

Passenger Compartment Air

Filter . . . . . . . . . . . . . . . . . . . . . . . . 155

Service . . . . . . . . . . . . . . . . . . . . . . . 155

Climate Controls 147

Climate Control Systems

The heating, cooling, and ventilation for the vehicle can be controlled with this system.

1. Fan Control

2. Air Conditioning or Comfort/

Eco Air Conditioning (Stop/

Start Only)

3. Air Delivery Modes

4. Defrost

5. TEMP (Temperature Control)

6. Rear Window Defogger

7. Recirculation

Climate Control Influence on Stop/

Start Operation and Fuel Economy

(If Equipped)

The climate control system is dependent upon other vehicle systems for heat and power input.

Certain climate control settings can lead to higher fuel usage and/or fewer auto stops.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

148 Climate Controls

The following are climate control settings that use more fuel:

.

Comfort air conditioning mode

.

Defrost mode

.

Extreme temperature settings, such as 15 °C (60 °F) or 32 °C

(90 °F)

.

High fan speed settings

To help reduce fuel usage:

.

Use eco air conditioning, instead of the comfort air conditioning.

.

Select a temperature setting that is higher in hot weather and lower in cold weather.

.

Turn off the air conditioning when it is not needed.

.

Only use defrost when needed to clear the windows.

Fan Control : Turn the knob clockwise or counterclockwise to increase or decrease the fan speed.

Temperature Control : Turn the knob clockwise or counterclockwise to increase or decrease the temperature setting.

Air Delivery Modes : Press

Y

,

\

,

[

, or

to change the direction of the airflow. An indicator light comes on in the selected mode button.

Y

: Air is directed to the instrument panel outlets.

\

: Air is directed to the instrument panel outlets and the floor outlets.

[

: Air is directed to the floor outlets.

-

: Air is directed to the windshield and floor outlets to clear the windows of fog or moisture.

0

: Press to clear the windshield of fog or frost more quickly. Air is directed to the windshield and side window outlets.

For best results, clear all snow and ice from the windshield before defrosting.

A/C (For Non-Stop/Start

Vehicles) : Press to turn the air conditioning on or off. If the fan is turned off, the air conditioner will not run and the indicator light may turn off.

A/C (For Stop/Start Vehicles) :

Press to cycle between the off, eco, and comfort air conditioning modes.

The indicator will be lit in comfort and eco modes and turns off when there is no A/C function. If the fan is turned off, the air conditioner will not run and the indicator light may turn off.

For comfort a/c, press A/C. The indicator will turn amber.

For eco a/c, press A/C again. The indicator will turn green. This setting balances fuel economy and air conditioning comfort. In warm weather conditions, auto stops may occur more frequently and the vehicle interior may be warmer as compared to the comfort air conditioning setting. This setting allows higher humidity inside the vehicle and window fogging before the engine restarts.

Pressing

0 during an auto stop may restart the engine to prevent window fogging. To reach comfort levels quickly during an auto stop,

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17 the engine will restart if the air conditioner is off and A/C is selected.

If temperature controls are adjusted cooler during an auto stop, the engine may restart to ensure that comfort is reached.

L

: Press to turn on recirculation. An indicator light comes on. Air is recirculated to quickly cool the inside of the vehicle or reduce the outside air and odors that may enter.

Rear Window Defogger

K

: Press to turn the rear window defogger on or off. An indicator light on the button comes on to show that the rear window defogger is on.

The upper region of gridlines on the rear window are antenna lines and are not intended to heat when the defogger is activated.

If equipped with heated outside mirrors, they turn on with the rear window defogger and help to clear fog or frost from the surface of the

mirror. See Heated Mirrors 0 44.

Caution

Using a razor blade or sharp object on the inside rear window can damage the antenna or defogger. Repairs would not be covered by the vehicle warranty.

Do not stick anything to the rear window.

Climate Controls 149

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

150 Climate Controls

Dual Automatic Climate Control System

The heating, cooling, and ventilation for the vehicle can be controlled with this system.

1. Driver and Passenger

Temperature Controls

2. Air Conditioning or Comfort/

Eco Air Conditioning (Stop/

Start Only)

3. Fan Control

4. Defrost

5. SYNC

6. Rear Window Defogger

7. Air Delivery Modes

8.

O

(Fan On/Off)

9. Recirculation

10. AUTO (Automatic Operation)

Climate Control Influence on Stop/

Start Operation and Fuel Economy

(If Equipped)

The climate control system is dependent upon other vehicle systems for heat and power input.

Certain climate control settings can lead to higher fuel usage and/or fewer auto stops.

The following are climate control settings that use more fuel:

.

Comfort air conditioning mode

.

Defrost mode

.

Extreme temperature settings, such as 15 °C (60 °F) or 32 °C

(90 °F)

.

High fan speed settings

To help reduce fuel usage:

.

Use the full automatic control as described under “Automatic

Operation.”

.

Use eco air conditioning, instead of the comfort air conditioning.

.

Select a temperature setting that is higher in hot weather and lower in cold weather.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

.

Turn off the air conditioning when it is not needed.

.

Only use defrost when needed to clear the windows.

Automatic Operation

The system automatically heats or cools the vehicle to the desired temperature:

.

Fan Speed

.

Air Delivery Mode

.

Air Conditioning

.

Recirculation

When AUTO is lit, all four functions operate automatically. Each function can also be manually set and the setting is displayed. Functions not manually set will continue to be automatically controlled, even if the

AUTO indicator is not lit.

For automatic operation:

1. Press AUTO.

2. Set the temperature. Allow the system time to stabilize. Then adjust the temperature as needed for best comfort.

To improve fuel efficiency and to cool the vehicle faster, recirculation may be automatically selected in warm weather.

The recirculation light will not come on when automatically controlled.

Press h to manually select recirculation; press it again to select outside air.

Manual Operation

Driver and Passenger

Temperature Control : The temperature can be adjusted separately for the driver and passenger.

Turn the knob clockwise or counterclockwise to increase or decrease the driver or passenger temperature setting.

SYNC : Press to link all climate zone settings to the driver settings.

The SYNC indicator light will turn on. When the passenger settings are adjusted, the SYNC indicator light is off.

O

: Press the knob to turn the fan on or off.

Climate Controls 151

Fan Control : Turn the knob clockwise or counterclockwise to increase or decrease the fan speed.

Press AUTO to return to automatic operation.

Air Delivery Modes : Press

Y

,

\

,

[

, or

to change the direction of the airflow. An indicator light comes on in the selected mode button.

Changing the mode cancels the automatic operation and the system goes into manual mode. Press

AUTO to return to automatic operation.

Y

: Air is directed to the instrument panel outlets.

\

: Air is directed to the instrument panel outlets and the floor outlets.

[

: Air is directed to the floor outlets.

-

: Air is directed to the windshield and floor outlets to clear the windows of fog or moisture.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

152 Climate Controls

0

: Press to clear the windshield of fog or frost more quickly. Air is directed to the windshield and side window outlets.

For best results, clear all snow and ice from the windshield before defrosting.

A/C (For Non-Stop/Start

Vehicles) : Press to turn the air conditioning on or off. If the fan is turned off, the air conditioner will not run and the indicator light may turn off.

Press AUTO to return to automatic operation and the air conditioner runs as needed. When the indicator light is on, the air conditioner runs automatically to cool the air inside the vehicle or to dry the air as needed to defog the windshield faster.

A/C (For Stop/Start Vehicles) :

Press to cycle between the off, eco, and comfort air conditioning modes.

The indicator will be lit in comfort and eco modes and turns off when there is no A/C function. If the fan is turned off, the air conditioner will not run and the indicator light may turn off.

Press AUTO to return to automatic operation and the air conditioner runs automatically as needed. When the indicator light is on, the air conditioner runs automatically to cool the air inside the vehicle or to dry the air as needed to defog the windshield faster.

For comfort a/c, press A/C. The indicator will turn amber.

For eco a/c, press A/C again. The indicator will turn green. This setting balances fuel economy and air conditioning comfort. In warm weather conditions, auto stops may occur more frequently and the vehicle interior may be warmer as compared to the comfort air conditioning setting. This setting allows higher humidity inside the vehicle and window fogging before the engine restarts.

Pressing

0 during an auto stop may restart the engine to prevent window fogging. To reach comfort levels quickly during an auto stop, the engine will restart if the air conditioner is off and AUTO or A/C is selected.

If temperature controls are adjusted cooler during an auto stop, the engine may restart to ensure that comfort is reached.

L

: Press to turn on recirculation. An indicator light comes on. Air is recirculated to quickly cool the inside of the vehicle or prevent outside air and odors from entering.

Auto Defog : The climate control system may have a sensor to automatically detect high humidity inside the vehicle. When high humidity is detected, the climate control system may adjust to outside air supply and turn on the air conditioner. The fan speed may slightly increase to help prevent fogging. If the climate control system does not detect possible window fogging, it returns to normal operation. To turn Auto Defog off or

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17 on, see “Climate and Air Quality”

under Vehicle Personalization

0 128.

Rear Window Defogger

K

: Press to turn the rear window defogger on or off. An indicator light on the button comes on to show that the rear window defogger is on.

The upper region of gridlines on the rear window are antenna lines and are not intended to heat when the defogger is activated.

If equipped with heated outside mirrors, they turn on with the rear window defogger and help to clear fog or frost from the surface of the

mirror. See Heated Mirrors 0 44.

Caution

Using a razor blade or sharp object on the inside rear window can damage the antenna or defogger. Repairs would not be covered by the vehicle warranty.

Do not stick anything to the rear window.

Remote Start Climate Control

Operation : If equipped with remote start, the climate control system may run when the vehicle is started remotely. The system uses the driver’s previous settings to heat or cool the inside of the vehicle. The rear defog may come on during remote start based on cold ambient conditions. The rear defog indicator light may not come on during a remote start. The front heated seats may turn on if it is cold outside. The heated seat indicator lights may not come on during a remote start.

See Remote Vehicle Start 0 34 and

Heated and Ventilated Front Seats

0 59, if equipped.

Climate Controls 153

Sensors

The solar sensor on top of the instrument panel near the windshield monitors the solar heat.

The climate control system uses the sensor information to adjust the temperature, fan speed, recirculation, and air delivery mode for best comfort.

If the sensor is covered, the automatic climate control system may not work properly.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

154 Climate Controls

Air Vents

Center Air Vents

Move the thumbwheels (1) left or right to open or close off the airflow.

Use the slider knobs (2) on the air vents to change the direction of the airflow.

Side Air Vents

Move the thumbwheels (1) up or down to open or close off the airflow.

Use the slider knobs (2) to change the direction of the airflow.

Operation Tips

.

Clear away any ice, snow, or leaves from air inlets at the base of the windshield that could block the flow of air into the vehicle.

.

Clear snow off the hood to improve visibility and help decrease moisture drawn into the vehicle.

.

Keep all outlets open whenever possible for best system performance.

.

Keep the paths under all seats clear of objects to help circulate the air inside the vehicle more effectively.

.

Use of non-GM approved hood deflectors can adversely affect the performance of the system.

.

Do not attach any devices to the air vent louvers. This restricts airflow and may cause damage to the air vents.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -

2018 - CRC - 8/22/17

Maintenance

Passenger Compartment

Air Filter

The passenger compartment air filter reduces dust, pollen, and other airborne irritants from outside air that is pulled into the vehicle. The filter will need to be replaced

periodically. See Maintenance

Schedule 0 293.

Using the climate control system without an air filter installed is not recommended. Water or other debris could enter the system and result in leaks or noises. Always install a new filter when removing the old filter.

For more information on filter replacement, see your dealer.

Service

All vehicles have a label underhood that identifies the refrigerant used in the vehicle. The refrigerant system should only be serviced by trained and certified technicians. The air conditioning evaporator should never be repaired or replaced by one from a salvage vehicle.

It should only be replaced by a new evaporator to ensure proper and safe operation.

During service, all refrigerants should be reclaimed with proper equipment. Venting refrigerants directly to the atmosphere is harmful to the environment and may also create unsafe conditions based on inhalation, combustion, frostbite, or other health-based concerns.

Climate Controls 155