Chevrolet Impala 2018 Owner's Manual page 149

148 Climate Controls
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 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
-
, or to change the direction of
the airflow. An indicator light comes
on in the selected mode button.
: 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