2020 CHEVROLET IMPALA winter tires

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/11/19
Driving and Operating 145
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance.
. Pass with caution.
. Keep windshield wiping
equipment in good shape.
. Keep the windshield washer fluid
reservoir filled.
. Have good tires with proper
tread depth. See Tires0231.
. Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips include:
.
Keep the vehicle serviced and in
good shape.
. Check all fluid levels and brakes,
tires, cooling system, and
transmission. .
Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
loss of steering assist. Always
have the engine running and the
vehicle in gear. .
Drive at speeds that keep the
vehicle in its own lane. Do not
swing wide or cross the
center line.
. Be alert on top of hills;
something could be in your lane
(e.g., stalled car, crash).
. Pay attention to special road
signs (e.g., falling rocks area,
winding roads, long grades,
passing or no-passing zones)
and take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and
the road creates less traction or
grip, so drive carefully. Wet ice can
occur at about 0 °C (32 °F) when
freezing rain begins to fall. Avoid
driving on wet ice or in freezing rain
until roads can be treated.
For Slippery Road Driving:
.Accelerate gently. Accelerating
too quickly causes the wheels to
spin and makes the surface
under the tires slick.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
198 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 199
California Proposition65 Warning . . . . . . . . . . . . . . . . . 199
California Perchlorate Materials Requirements . . . . . 200
Accessories and Modifications . . . . . . . . . . . . . . . . 200
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 200
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 201
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 203
Engine Oil . . . . . . . . . . . . . . . . . . . . 204
Engine Oil Life System . . . . . . . 206
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 207
Engine Air Cleaner/Filter . . . . . . 208
Cooling System . . . . . . . . . . . . . . 209
Engine Overheating . . . . . . . . . . 212
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . 213
Washer Fluid . . . . . . . . . . . . . . . . . 214
Brakes . . . . . . . . . . . . . . . . . . . . . . . 214
Brake Fluid . . . . . . . . . . . . . . . . . . . 215 Battery - North America . . . . . . 216
Starter Switch Check . . . . . . . . . 217
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 217
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 218
Wiper Blade Replacement . . . . 218
Windshield Replacement . . . . . 219
Gas Strut(s) . . . . . . . . . . . . . . . . . . 219
Headlamp Aiming
Front Headlamp Aiming . . . . . . 220
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 221
Halogen Bulbs . . . . . . . . . . . . . . . . 221
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 221
LED Lighting . . . . . . . . . . . . . . . . . 221
Headlamps, Front Turn Signal, Sidemarker, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . 221
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 223
License Plate Lamp . . . . . . . . . . 224
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 225 Electrical System Overload . . . 225
Fuses and Circuit Breakers . . . 226
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 226
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 229
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 231
All-Season Tires . . . . . . . . . . . . . . 232
Winter Tires . . . . . . . . . . . . . . . . . . 233
Low-Profile Tires . . . . . . . . . . . . . 233
Summer Tires . . . . . . . . . . . . . . . . 233
Tire Sidewall Labeling . . . . . . . . 234
Tire Designations . . . . . . . . . . . . . 236
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 237
Tire Pressure . . . . . . . . . . . . . . . . . 239
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 240
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 241
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 242
Tire Inspection . . . . . . . . . . . . . . . . 245
Tire Rotation . . . . . . . . . . . . . . . . . 245
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 246
Buying New Tires . . . . . . . . . . . . . 247
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 249

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
232 Vehicle Care
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact—such
as when hitting a pothole.
Keep tires at the
recommended pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
(Continued)
Warning (Continued)
.Replace any tires that
have been damaged by
impacts with potholes,
curbs, etc.
.Improperly repaired tires
can cause a crash. Only
the dealer or an
authorized tire service
center should repair,
replace, dismount, and
mount the tires.
.Do not spin the tires in
excess of 56 km/h
(35 mph) on slippery
surfaces such as snow,
mud, ice, etc. Excessive
spinning may cause the
tires to explode.
See Tire Pressure for
High-Speed Operation 0240 for
inflation pressure adjustment for
high-speed driving.
All-Season Tires
This vehicle may come with
all-season tires. These tires are
designed to provide good overall
performance on most road surfaces
and weather conditions. Original
equipment tires designed to GM's
specific tire performance criteria
have a TPC specification code
molded onto the sidewall. Original
equipment all-season tires can be
identified by the last two characters
of this TPC code, which will
be “MS.”
Consider installing winter tires on
the vehicle if frequent driving on
snow or ice-covered roads is
expected. All-season tires provide
adequate performance for most
winter driving conditions, but they
may not offer the same level of
traction or performance as winter
tires on snow or ice-covered roads.
See Winter Tires 0233.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 233
Winter Tires
This vehicle was not originally
equipped with winter tires. Winter
tires are designed for increased
traction on snow and ice-covered
roads. Consider installing winter
tires on the vehicle if frequent
driving on ice or snow covered
roads is expected. See your dealer
for details regarding winter tire
availability and proper tire selection.
Also, seeBuying New Tires 0247.
With winter tires, there may be
decreased dry road traction,
increased road noise, and shorter
tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
If using winter tires:
. Use tires of the same brand and
tread type on all four wheel
positions.
. Use only radial ply tires of the
same size, load range, and
speed rating as the original
equipment tires. Winter tires with the same speed
rating as the original equipment tires
may not be available for H, V, W, Y,
and ZR speed rated tires. If winter
tires with a lower speed rating are
chosen, never exceed the tire's
maximum speed capability.
Low-Profile Tires
If the vehicle has P245/45R19 or
P245/40R20 size tires, they are
classified as low-profile tires.
Caution
Low-profile tires are more
susceptible to damage from road
hazards or curb impact than
standard profile tires. Tire and/or
wheel assembly damage can
occur when coming into contact
with road hazards like potholes,
or sharp edged objects, or when
sliding into a curb. The warranty
does not cover this type of
damage. Keep tires set to the
correct inflation pressure and (Continued)
Caution (Continued)
when possible, avoid contact with
curbs, potholes, and other road
hazards.
Summer Tires
This vehicle may come with high
performance summer tires. These
tires have a special tread and
compound that are optimized for
maximum dry and wet road
performance. This special tread and
compound will have decreased
performance in cold climates, and
on ice and snow. It is recommended
that winter tires be installed on the
vehicle if frequent driving at
temperatures below approximately
5 °C (40 °F) or on ice or snow
covered roads is expected. See
Winter Tires0233.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
248 Vehicle Care
affected if all the tires are not
replaced at the same time.
If proper rotation and
maintenance have been done,
all four tires should wear out at
about the same time. SeeTire
Rotation 0245. However, if it is
necessary to replace only one
axle set of worn tires, place the
new tires on the rear axle.
Winter tires with the same speed
rating as the original equipment
tires may not be available for H,
V, W, Y and ZR speed rated
tires. Never exceed the winter
tires’ maximum speed capability
when using winter tires with a
lower speed rating.
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
(Continued)
Warning (Continued)
Only your dealer or authorized
tire service center should
mount or dismount the tires.
{Warning
Mixing tires of different sizes,
brands, or types may cause
loss of control of the vehicle,
resulting in a crash or other
vehicle damage. Use the
correct size, brand, and type
of tires on all wheels.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel
rim flanges to develop cracks
after many miles of driving.
A tire and/or wheel could fail
(Continued)
Warning (Continued)
suddenly and cause a crash.
Use only radial-ply tires with
the wheels on the vehicle.
If the vehicle tires must be
replaced with a tire that does not
have a TPC Spec number, make
sure they are the same size,
load range, speed rating, and
construction (radial) as the
original tires.
Vehicles that have a tire
pressure monitoring system
could give an inaccurate
low-pressure warning if non-TPC
Spec rated tires are installed.
See Tire Pressure Monitor
System 0241.
The Tire and Loading
Information label indicates the
original equipment tires on the
vehicle. See Vehicle Load Limits
0 147.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 249
Different Size Tires and
Wheels
If wheels or tires are installed that
are a different size than the original
equipment wheels and tires, vehicle
performance, including its braking,
ride and handling characteristics,
stability, and resistance to rollover
may be affected. If the vehicle has
electronic systems such as antilock
brakes, rollover airbags, traction
control, electronic stability control,
or All-Wheel Drive, the performance
of these systems can also be
affected.
{Warning
If different sized wheels are used,
there may not be an acceptable
level of performance and safety if
tires not recommended for those
wheels are selected. This
increases the chance of a crash
and serious injury. Only use GM
specific wheel and tire systems(Continued)
Warning (Continued)
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0247 and
Accessories and Modifications
0 200.
Uniform Tire Quality
Grading
The following information relates
to the system developed by the
United States National Highway
Traffic Safety Administration
(NHTSA), which grades tires by
treadwear, traction, and
temperature performance. This
applies only to vehicles sold in
the United States. The grades
are molded on the sidewalls of
most passenger car tires. The
Uniform Tire Quality Grading
(UTQG) system does not apply
to deep tread, winter tires, compact spare tires, tires with
nominal rim diameters of
10 to 12 inches (25 to 30 cm),
or to some limited-production
tires.
While the tires available on
General Motors passenger cars
and light trucks may vary with
respect to these grades, they
must also conform to federal
safety requirements and
additional General Motors Tire
Performance Criteria (TPC)
standards.
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Customer Information 295
.Lock-Out Service: Service to
unlock the vehicle if you are
locked out. A remote unlock may
be available if you have OnStar.
For security reasons, the driver
must present identification
before this service is given.
. Emergency Tow from a Public
Road or Highway: Tow to the
nearest Chevrolet dealer for
warranty service, or if the vehicle
was in a crash and cannot be
driven. Assistance is not given
when the vehicle is stuck in the
sand, mud, or snow.
. Flat Tire Change: Service to
change a flat tire with the spare
tire. The spare tire, if equipped,
must be in good condition and
properly inflated. It is the owner's
responsibility for the repair or
replacement of the tire if it is not
covered by the warranty.
. Battery Jump Start: Service to
jump start a dead battery.
. Trip Interruption Benefits and
Assistance: If your trip is
interrupted due to a warranty event, incidental expenses may
be reimbursed within the
Powertrain warranty period.
Items considered are reasonable
and customary hotel, meals,
rental car, or a vehicle being
delivered back to the customer,
up to 500 miles.
Services Not Included in
Roadside Assistance
.
Impound towing caused by
violation of any laws
. Legal fines
. Mounting, dismounting,
or changing of snow tires,
chains, or other traction devices
Service is not provided if a vehicle
is in an area that is not accessible
to the service vehicle or is not a
regularly traveled or maintained
public road, which includes ice and
winter roads. Off-road use is not
covered.
Services Specific to
Canadian-Purchased Vehicles
. Fuel Delivery: Reimbursement
is up to 7 liters. If available,
diesel fuel delivery may be
restricted. Propane and other
fuels are not provided through
this service.
. Lock-Out Service: Vehicle
registration is required.
. Trip Interruption Benefits and
Assistance: Must be over
150 km from where your trip was
started to qualify.
Pre-authorization, original
detailed receipts, and a copy of
the repair orders are required.
Once authorization has been
received, the Roadside
Assistance advisor will help to
make arrangements and explain
how to receive payment.
. Alternative Service: If
assistance cannot be provided
right away, the Roadside
Assistance advisor may give
permission to get local
emergency road service. You will

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Index 317
AutomaticDimming Mirrors . . . . . . . . . . . . . . . . 24
Door Locks . . . . . . . . . . . . . . . . . . . . . 18
Emergency Braking (AEB) . . . . 180
Headlamp System . . . . . . . . . . . . 127
Transmission . . . . . . . . . . . . . . . . . 158
Transmission Fluid . . . . . . . . . . . 207
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 160
Shift Lock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 217
B
Battery
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 131
Load Management . . . . . . . . . . . . 130
Power Protection . . . . . . . . . . . . . 131
Battery - North America . . . . 216, 259
Blade Replacement, Wiper . . . . . 218
Brake Parking, Electric . . . . . . . . . . . . . . 161
System Warning Light . . . . . . . . 104
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 214 Antilock . . . . . . . . . . . . . . . . . . . . . . . 161
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 163
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 142 Braking (cont'd)
Automatic
Emergency (AEB) . . . . . . . . . . . 180
Break-In, New Vehicle . . . . . . . . . . 151
Bulb Replacement
Halogen Bulbs . . . . . . . . . . . . . . . . 221
Headlamp Aiming . . . . . . . . . . . . . 220
Headlamps . . . . . . . . . . . . . . . . . . . 221
Headlamps, Front TurnSignal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 221
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 221
License Plate Lamps . . . . . . . . . 224
Taillamps, Turn Signal,
Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 223
Buying New Tires . . . . . . . . . . . . . . . 247
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . 91 California
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 200
California Proposition
65 Warning . . . . . . . . . .199, 216, 259, Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 288
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 157
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Winter Driving . . . . . . . . . . . . . . . . 145
Cargo Management System . . . . . . . . . . . 86
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . . 85
Chains, Tire . . . . . . . . . . . . . . . . . . . . 251
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . 92
Charging System Light . . . . . . . . . 102
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 103
Child Restraints Infants and Young Children . . . . . 65