2018 CHEVROLET IMPALA climate control

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Driving and Operating 171
.The battery has been recently
disconnected.
. The battery charge is low.
. The interior comfort level has not
reached the required level for
the climate control system or
defog settings. Use the eco
(green indicator on) air
conditioning mode for better
efficiency. See Dual Automatic
Climate Control System 0150.
. The auto stop time is greater
than two minutes.
Engine Heater
The engine coolant heater,
if equipped, can help in cold
weather conditions at or below
−18 °C (0 °F) for easier starting and
better fuel economy during engine
warm-up. Plug in the coolant heater
at least four hours before starting
the vehicle. An internal thermostat
in the plug end of the cord will
prevent engine coolant heater
operation at temperatures above
−18 °C (0 °F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord. The electrical
cord is on the driver side of the
engine compartment, between
the fender and the engine
compartment fuse block.
Check the heater cord for
damage. If it is damaged, do
not use it. See your dealer for
a replacement. Inspect the
cord for damage yearly
3. Plug it into a normal, grounded 110-volt AC outlet.
{Warning
Improper use of the heater cord
or an extension cord can damage
the cord and may result in
overheating and fire.
. Plug the cord into a
three-prong electrical utility
receptacle that is protected
(Continued)
Warning (Continued)
by a ground fault detection
function. An ungrounded
outlet could cause an
electric shock.
. Use a weatherproof,
heavy-duty, 15 amp-rated
extension cord if needed.
Failure to use the
recommended extension
cord in good operating
condition, or using a
damaged heater or
extension cord, could make
it overheat and cause a fire,
property damage, electric
shock, and injury.
. Do not operate the vehicle
with the heater cord
permanently attached to the
(Continued)

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Driving and Operating 207
.Do not tow a trailer during the
first 800 km (500 mi) to prevent
damage to the engine, axle,
or other parts.
. Then during the first 800 km
(500 mi) of trailer towing, do not
drive over 80 km/h (50 mph) and
do not make starts at full throttle.
. Vehicles can tow in D (Drive).
Shift the transmission to a lower
gear if the transmission shifts
too often under heavy loads and/
or hilly conditions.
. Do not use Adaptive Cruise
Control when towing.
. The Forward Automatic Braking
System should be set to Off
when towing. See Forward
Automatic Braking (FAB) 0197.
. Turn off Parking Assist when
towing.{Warning
When towing a trailer, exhaust
gases may collect at the rear of
the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
When towing a trailer:
. Do not drive with the
liftgate, trunk/hatch,
or rear-most window open.
. Fully open the air outlets on
or under the instrument
panel.
. Also adjust the climate
control system to a setting
that brings in only outside
air. See “Climate Control
Systems” in the Index.
For more information about
carbon monoxide, see Engine
Exhaust 0174.
Towing a trailer requires a certain
amount of experience. The
combination you are driving is longer and not as responsive as the
vehicle itself. Get acquainted with
the handling and braking of the rig
before setting out for the open road.
Before starting, check all trailer hitch
parts and attachments, safety
chains, electrical connectors, lamps,
tires, and mirrors. If the trailer has
electric brakes, start the
combination moving and then apply
the trailer brake controller by hand
to be sure the brakes work.
During the trip, check occasionally
to be sure that the load is secure
and the lamps and any trailer
brakes still work.
Following Distance
Stay at least twice as far behind the
vehicle ahead as you would when
driving the vehicle without a trailer.
This can help to avoid heavy
braking and sudden turns.
Passing
More passing distance is needed
when towing a trailer. The
combination will not accelerate as
quickly and is longer so it is

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Vehicle Care 267
norm due to variations in driving
habits, service practices and
differences in road
characteristics and climate.
Traction
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
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 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.
Wheel Alignment and Tire
Balance
The tires and wheels were aligned
and balanced at the factory to
provide the longest tire life and best
overall performance. Adjustments to
wheel alignment and tire balancing
are not necessary on a regular
basis. Consider an alignment check
if there is unusual tire wear or the
vehicle is significantly pulling to one
side or the other. Some slight pull to
the left or right, depending on the
crown of the road and/or other road
surface variations such as troughs
or ruts, is normal. If the vehicle is
vibrating when driving on a smooth
road, the tires and wheels may need
to be rebalanced. See your dealer
for proper diagnosis.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
284 Vehicle Care
.Aftermarket appearance caps or
covers while the lamps are
illuminated, due to excessive
heat generated.
Caution
Failure to clean lamps properly
can cause damage to the lamp
cover that would not be covered
by the vehicle warranty.
Air Intakes
Clear debris from the air intakes,
between the hood and windshield,
when washing the vehicle.
Shutter System
The vehicle may have a shutter
system designed to help increase
fuel economy. Keep the shutter
system clean for proper operation.
Windshield and Wiper Blades
Clean the outside of the windshield
with glass cleaner.
Clean rubber blades using lint-free
cloth or paper towel soaked with
windshield washer fluid or a mild
detergent. Wash the windshield
thoroughly when cleaning the
blades. Bugs, road grime, sap, and a buildup of vehicle wash/wax
treatments may cause wiper
streaking.
Replace the wiper blades if they are
worn or damaged. Damage can be
caused by extreme dusty
conditions, sand, salt, heat, sun,
snow, and ice.
Clear ice and snow from the wiper
blades before using them. If frozen
to the windshield, carefully loosen
them or thaw them. Damaged wiper
blades should be replaced. See
Wiper Blade Replacement
0235.
Heavy snow or ice can overload the
wipers. If the wiper motor overheats,
the windshield wipers will stop until
the motor cools and the wiper
control is turned off. See Electrical
System Overload 0242.
Weatherstrips
Apply weatherstrip lubricant on
weatherstrips to make them last
longer, seal better, and not stick or
squeak. Lubricate weatherstrips at
least once a year. Hot. dry climates
may require more frequent
application. Black marks from

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Index 335
Child Restraints (cont'd)Systems . . . . . . . . . . . . . . . . . . . . . . . . 85
Circuit Breakers . . . . . . . . . . . . . . . . 243
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 281
Interior Care . . . . . . . . . . . . . . . . . . 286
Climate Control Systems . . . . . . . 147 Air Conditioning . . . . . . . . . . . . . . 147
Dual Automatic . . . . . . . . . . . . . . . 150
Heating . . . . . . . . . . . . . . . . . . . . . . . 147
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Cluster, Instrument . . . . . . . . . . . . . 110
Collision Damage Repair . . . . . . . 314
Compact Spare Tire . . . . . . . . . . . . 275
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . 99
Compass . . . . . . . . . . . . . . . . . . . . . . . 106
Connections OnStar . . . . . . . . . . . . . . . . . . . . . . . 324
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 181
Control of a Vehicle . . . . . . . . . . . . . 158
Convenience Net . . . . . . . . . . . . . . . 102
Convex Mirrors . . . . . . . . . . . . . . . . . . 43
Coolant
Engine Temperature Gauge . . .115
Cooling . . . . . . . . . . . . . . . . . . . . 147, 150 Cooling System . . . . . . . . . . . . . . . . . 225
Courtesy Lamps . . . . . . . . . . . . . . . . 142
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 313
Cruise Control . . . . . . . . . . . . . . . . . . 182 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Cruise Control, Adaptive . . . . . . . . 184
Cupholders . . . . . . . . . . . . . . . . . . . . . 100
Customer Assistance . . . . . . . . . . . 310
Offices . . . . . . . . . . . . . . . . . . . . . . . . 309
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 310
Customer Information Service PublicationsOrdering Information . . . . . . . . 316
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 307
D
Damage Repair, Collision . . . . . . . 314
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 320
OnStar . . . . . . . . . . . . . . . . . . . . . . . 320
Data Recorders, Event . . . . . . . . . 319
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 140
Defensive Driving . . . . . . . . . . . . . . . 158 Delayed Locking . . . . . . . . . . . . . . . . . 38
Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . 326
Distracted Driving . . . . . . . . . . . . . . . 157
Dome Lamps . . . . . . . . . . . . . . . . . . . 143
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 125
Delayed Locking . . . . . . . . . . . . . . . . 38
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Power Locks . . . . . . . . . . . . . . . . . . . . 38
Drive Belt Routing, Engine . . . . . . 306
Driver Assistance Systems . . . . . 192
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . 125
Driving Assistance Systems . . . . . . . . . . 195
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 206
Defensive . . . . . . . . . . . . . . . . . . . . . 158
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 158
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 161
If the Vehicle is Stuck . . . . . . . . . 163
Loss of Control . . . . . . . . . . . . . . . 160
Off-Road Recovery . . . . . . . . . . . 159
Vehicle Load Limits . . . . . . . . . . . 163
Wet Roads . . . . . . . . . . . . . . . . . . . 160
Winter . . . . . . . . . . . . . . . . . . . . . . . . 162

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
336 Index
Dual Automatic ClimateControl System . . . . . . . . . . . . . . . . 150
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 203
Electric Parking Brake . . . . . . . . . . 178
Electric Parking Brake Light . . . . 120
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 211
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 243
Fuses and Circuit Breakers . . . 243
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 246
Overload . . . . . . . . . . . . . . . . . . . . . 242
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 322
Engine Air Cleaner/Filter . . . . . . . . . . . . . 224
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . .118
Compartment Overview . . . . . . . 217
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .115
Cooling System . . . . . . . . . . . . . . . 225
Drive Belt Routing . . . . . . . . . . . . 306
Exhaust . . . . . . . . . . . . . . . . . . . . . . 174 Engine (cont'd)
Heater . . . . . . . . . . . . . . . . . . . . . . . . 171
Oil Life System . . . . . . . . . . . . . . . 222
Oil Pressure Light . . . . . . . . . . . . 123
Overheated Protection
Operating Mode . . . . . . . . . . . . . 230
Overheating . . . . . . . . . . . . . . . . . . 229
Power Messages . . . . . . . . . . . . . 128
Running While Parked . . . . . . . . 174
Starting . . . . . . . . . . . . . . . . . . . . . . . 169
Entry Lighting . . . . . . . . . . . . . . . . . . . 144
Equipment, Towing . . . . . . . . . . . . . 210
Event Data Recorders . . . . . . . . . . 319
Exit Lighting . . . . . . . . . . . . . . . . . . . . 144
Extended Parking . . . . . . . . . . . . . . . 174
Extender, Seat Belt . . . . . . . . . . . . . . 67
Exterior Lamp Controls . . . . . . . . . 139
Exterior Lamps Off Reminder . . . 140
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 145
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . 224
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 140
Flashers, Hazard Warning . . . . . . 141 Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 269
Changing . . . . . . . . . . . . . . . . . . . . . 270
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 289
Fluid Automatic Transmission . . . . . . 223
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 232
Washer . . . . . . . . . . . . . . . . . . . . . . . 230
Folding Mirrors . . . . . . . . . . . . . . . . . . 44
Forward Automatic Braking . . . . . 197
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 195
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 317
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . 53
Heated and Ventilated . . . . . . . . . . 59
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 Additives . . . . . . . . . . . . . . . . . . . . . 203
Economy Driving . . . . . . . . . . . . . . . 26
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 206
Filling the Tank . . . . . . . . . . . . . . . 204
Foreign Countries . . . . . . . . . . . . 203
Gauge . . . . . . . . . . . . . . . . . . . . . . . . .114
Low Fuel Warning Light . . . . . . . 123
Requirements, California . . . . . 202

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Index 341
Seat Belts (cont'd)Reminders . . . . . . . . . . . . . . . . . . . . .115
Replacing after a Crash . . . . . . . . 68
Use During Pregnancy . . . . . . . . . . 66
Seats Adjustment, Front . . . . . . . . . . . . . . . 53
Head Restraints . . . . . . . . . . . . . . . . 50
Heated and Ventilated Front . . . . 59
Lumbar Adjustment, Front . . . . . . 55
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 56
Power Adjustment, Front . . . . . . . 54
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Reclining Seatbacks . . . . . . . . . . . . 55
Securing Child Restraints . . . . 94, 96
Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 124
OnStar . . . . . . . . . . . . . . . . . . . . . . . 323
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 41
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 41
Service . . . . . . . . . . . . . . . . . . . . . . . . . 155 Accessories andModifications . . . . . . . . . . . . . . . . 215
Climate Control System . . . . . . . 147
Doing Your Own Work . . . . . . . . 215
Maintenance Records . . . . . . . . 303
Maintenance, General
Information . . . . . . . . . . . . . . . . . . 291
Parts Identification Label . . . . . 304 Service (cont'd)
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 316
Scheduling Appointments . . . . . 313
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . 120
Services Special Application . . . . . . . . . . . 298
Servicing the Airbag . . . . . . . . . . . . . 79
Shift Lock Control Function
Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 235
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 172
Out of Park . . . . . . . . . . . . . . . . . . . 173
Side Blind Zone Alert (SBZA) . . . 198
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 142
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . 275
Special Application Services . . . . 298
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 305
Speedometer . . . . . . . . . . . . . . . . . . . 113
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 122
Start Assist, Hill . . . . . . . . . . . . . . . . . 180
Start Vehicle, Remote . . . . . . . . . . . 34 Starter Switch Check . . . . . . . . . . . 234
Starting the Engine . . . . . . . . . . . . . 169
Steering . . . . . . . . . . . . . . . . . . . . . . . . 159
Heated Wheel . . . . . . . . . . . . . . . . 104
Wheel Adjustment . . . . . . . . . . . . 104
Wheel Controls . . . . . . . . . . . . . . . 104
Stoplamps and Back-up Lamps
Bulb Replacement . . . . . . . . . . . . 240
Storage Areas Cargo ManagementSystem . . . . . . . . . . . . . . . . . . . . . . 101
Center Console . . . . . . . . . . . . . . . 100
Convenience Net . . . . . . . . . . . . . 102
Glove Box . . . . . . . . . . . . . . . . . . . . 100
Instrument Panel . . . . . . . . . . . . . . . 99
Umbrella . . . . . . . . . . . . . . . . . . . . . . 101
Storage Compartments . . . . . . . . . . 99
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 163
Summer Tires . . . . . . . . . . . . . . . . . . 250
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 47
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 195
Infotainment . . . . . . . . . . . . . 146, 320