roof CHEVROLET IMPALA 2018 User Guide

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Seats and Restraints 71
Driver Side Shown, PassengerSide Similar
The driver and front outboard
passenger seat-mounted side
impact airbags are in the side of the
seatbacks closest to the door.
The roof-rail airbags for the driver,
front outboard passenger, and
second row outboard passengers
are in the ceiling above the side
windows.Rear Seat Driver Side Shown, Passenger Side Similar
On vehicles with second row
seat-mounted side impact airbags,
they are in the sides of the rear
seatback closest to the door.
{Warning
If something is between an
occupant and an airbag, the
airbag might not inflate properly
or it might force the object into
that person causing severe injury
or even death. The path of an (Continued)
Warning (Continued)
inflating airbag must be kept
clear. Do not put anything
between an occupant and an
airbag, and do not attach or put
anything on the steering wheel
hub or on or near any other
airbag covering.
Do not use seat accessories that
block the inflation path of a
seat-mounted side impact airbag.
Never secure anything to the roof
of a vehicle with roof-rail airbags
by routing a rope or tie‐down
through any door or window
opening. If you do, the path of an
inflating roof-rail airbag will be
blocked.
When Should an Airbag
Inflate?
This vehicle is equipped with
airbags. SeeAirbag System 068.
Airbags are designed to inflate if the
impact exceeds the specific airbag

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
72 Seats and Restraints
system's deployment threshold.
Deployment thresholds are used to
predict how severe a crash is likely
to be in time for the airbags to
inflate and help restrain the
occupants. The vehicle has
electronic sensors that help the
airbag system determine the
severity of the impact. Deployment
thresholds can vary with specific
vehicle design.
Frontal airbags are designed to
inflate in moderate to severe frontal
or near frontal crashes to help
reduce the potential for severe
injuries, mainly to the driver's or
front outboard passenger's head
and chest.
Whether the frontal airbags will or
should inflate is not based primarily
on how fast the vehicle is traveling.
It depends on what is hit, the
direction of the impact, and how
quickly the vehicle slows down.
Frontal airbags may inflate at
different crash speeds depending on
whether the vehicle hits an object
straight on or at an angle, andwhether the object is fixed or
moving, rigid or deformable, narrow
or wide.
Frontal airbags are not intended to
inflate during vehicle rollovers, rear
impacts, or in many side impacts.
In addition, the vehicle has
advanced technology frontal
airbags. Advanced technology
frontal airbags adjust the restraint
according to crash severity.
Knee airbags are designed to inflate
in moderate to severe frontal or
near frontal impacts. Knee airbags
are not designed to inflate during
vehicle rollovers, in rear impacts,
or in many side impacts.
Seat-mounted side impact airbags
are designed to inflate in moderate
to severe side crashes depending
on the location of the impact.
Seat-mounted side impact airbags
are not designed to inflate in frontal
impacts, near frontal impacts,
rollovers, or rear impacts.
A seat-mounted side impact airbag
is designed to inflate on the side of
the vehicle that is struck.Roof-rail airbags are designed to
inflate in moderate to severe side
crashes depending on the location
of the impact. In addition, these
roof-rail airbags are designed to
inflate during a rollover or in a
severe frontal impact. Roof-rail
airbags are not designed to inflate in
rear impacts. Both roof-rail airbags
will inflate when either side of the
vehicle is struck or if the sensing
system predicts that the vehicle is
about to roll over on its side, or in a
severe frontal impact.
In any particular crash, no one can
say whether an airbag should have
inflated simply because of the
vehicle damage or repair costs.
What Makes an Airbag
Inflate?
In a deployment event, the sensing
system sends an electrical signal
triggering a release of gas from the
inflator. Gas from the inflator fills the
airbag causing the bag to break out
of the cover. The inflator, the airbag,
and related hardware are all part of
the airbag module.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Seats and Restraints 73
For airbag locations, seeWhere Are
the Airbags? 070.
How Does an Airbag
Restrain?
In moderate to severe frontal or
near frontal collisions, even belted
occupants can contact the steering
wheel or the instrument panel. In
moderate to severe side collisions,
even belted occupants can contact
the inside of the vehicle.
Airbags supplement the protection
provided by seat belts by
distributing the force of the impact
more evenly over the
occupant's body.
Rollover capable roof-rail airbags
are designed to help contain the
head and chest of occupants in the
outboard seating positions in the
first and second rows. The rollover
capable roof-rail airbags are
designed to help reduce the risk of
full or partial ejection in rollover
events, although no system can
prevent all such ejections. But airbags would not help in many
types of collisions, primarily
because the occupant's motion is
not toward those airbags. See
When
Should an Airbag Inflate? 071.
Airbags should never be regarded
as anything more than a supplement
to seat belts.
What Will You See after
an Airbag Inflates?
After frontal, knee, and
seat-mounted side impact airbags
inflate, they quickly deflate, so
quickly that some people may not
even realize the airbags inflated.
Roof-rail airbags may still be at least
partially inflated for some time after
they inflate. Some components of
the airbag module may be hot for
several minutes. For location of the
airbags, see Where Are the
Airbags? 070.
The parts of the airbag that come
into contact with you may be warm,
but not too hot to touch. There may
be some smoke and dust coming
from the vents in the deflated airbags. Airbag inflation does not
prevent the driver from seeing out of
the windshield or being able to steer
the vehicle, nor does it prevent
people from leaving the vehicle.
{Warning
When an airbag inflates, there
may be dust in the air. This dust
could cause breathing problems
for people with a history of
asthma or other breathing trouble.
To avoid this, everyone in the
vehicle should get out as soon as
it is safe to do so. If you have
breathing problems but cannot
get out of the vehicle after an
airbag inflates, then get fresh air
by opening a window or a door.
If you experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle has a feature that may
automatically unlock the doors, turn
on the interior lamps and hazard
warning flashers, and shut off the

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
80 Seats and Restraints
could either prevent proper
deployment of the passenger
airbag(s) or prevent the passenger
sensing system from properly
turning off the passenger airbag(s).
SeePassenger Sensing System
0 74.
If the vehicle has rollover roof-rail
airbags, see Different Size Tires
and Wheels 0265 for additional
important information.
If you have to modify your vehicle
because you have a disability and
have questions about whether the
modifications will affect the vehicle's
airbag system, or if you have
questions about whether the airbag
system will be affected if the vehicle
is modified for any other reason, call
Customer Assistance. See
Customer Assistance Offices 0309.
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See
Airbag Readiness Light 0116.
Caution
If an airbag covering is damaged,
opened, or broken, the airbag
may not work properly. Do not
open or break the airbag
coverings. If there are any
opened or broken airbag
coverings, have the airbag
covering and/or airbag module
replaced. For the location of the
airbags, see Where Are the
Airbags? 070. See your dealer
for service.
Replacing Airbag System
Parts after a Crash
{Warning
A crash can damage the airbag
systems in the vehicle.
A damaged airbag system may
not properly protect you and your
passenger(s) in a crash, resulting
in serious injury or even death. To
(Continued)
Warning (Continued)
help make sure the airbag
systems are working properly
after a crash, have them
inspected and any necessary
replacements made as soon as
possible.
If an airbag inflates, you will need to
replace airbag system parts. See
your dealer for service.
If the airbag readiness light stays on
after the vehicle is started or comes
on when you are driving, the airbag
system may not work properly. Have
the vehicle serviced right away. See
Airbag Readiness Light 0116.

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
172 Driving and Operating
Warning (Continued)
vehicle. Possible heater
cord and thermostat
damage could occur.
. While in use, do not let the
heater cord touch vehicle
parts or sharp edges. Never
close the hood on the
heater cord.
. Before starting the vehicle,
unplug the cord, reattach
the cover to the plug, and
securely fasten the cord.
Keep the cord away from
any moving parts.
4. Before starting the engine, be sure to unplug and store the
cord as it was before to keep it
away from moving engine
parts.
The length of time the heater should
remain plugged in depends on
several factors. Ask a dealer in the
area where you will be parking the
vehicle for the best advice on this.
Retained Accessory
Power (RAP)
Some vehicle accessories may be
used after the ignition is turned off.
The power windows and sunroof,
if equipped, will continue to work for
up to 10 minutes or until any door is
opened.
The infotainment system will
continue to work for 10 minutes,
until the driver door is opened,
or until the ignition is turned on or
placed in ACC/ACCESSORY.
Shifting Into Park
1. Hold the brake pedal down and set the parking brake. See
Electric Parking Brake 0178.
2. Move the shift lever into P (Park) by holding in the
button on the shift lever and
pushing the shift lever toward
the front of the vehicle.
3. Turn the ignition off.
Leaving the Vehicle with the
Engine Running
{Warning
It can be dangerous to leave the
vehicle with the engine running.
It could overheat and catch fire.
It is dangerous to get out of the
vehicle if the shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the vehicle when the
engine is running. If you have left
the engine running, the vehicle
can move suddenly. You or others
could be injured. To be sure the
vehicle will not move, even when
you are on fairly level ground,
always set the parking brake and
move the shift lever to P (Park).
See Shifting Into Park 0172.
If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the
parking brake is set before you
leave it. After you have moved the

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Vehicle Care 245
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
1 Transmission control module battery
2 Engine control module battery / A/C Clutch
3 A/C clutch
4 Engine control module battery
5 Engine control module/Ignition
6 Front wiper
7 Engine control module ignition
8 Ignition coils –even
9 Ignition coils –odd
10 Engine control module 11 Miscellaneous 1
12 Starter Fuses Usage
13 Transmission control module/Chassis
control module/
Ignition
14 Cabin Coolant pump
17 Body/Ignition 2
18 Battery disconnect unit/Ignition
19 Aeroshutter
20 Transmission auxiliary pump
21 Rear power window
22 Sunroof
23 Adaptive cruise control
24 Front power window
25 Retained accessory power
26 ABS pump
27 Electric parking brake
28 Rear defogger Fuses Usage
29 Passive entry/Passive start
30 Canister vent solenoid
31 Heated seat, driver
32 Body control module 6
33 Heated seat, passenger
34 ABS valve
35 Amplifier
37 Right high-beam headlamp
38 Left high-beam headlamp
41 Vacuum pump
42 Cooling fan high speed
44 Starter 2
45 Cooling fan low speed
46 Cooling fan control
47 Miscellaneous 2
49 Right HID headlamp

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
294 Service and Maintenance
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
. Lubricate body components. See
Exterior Care 0281.
. Check starter switch. See Starter
Switch Check 0234.
. Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check
0235.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check
0 235.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
. Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. If the hold
open is low, service the gas
strut. See Gas Strut(s) 0236. .
Inspect sunroof track and seal,
if equipped. See Sunroof047.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
340 Index
Perchlorate MaterialsRequirements, California . . . . . . 215
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 128
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 38
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Outlets . . . . . . . . . . . . . . . . . . . . . . . 106
Protection, Battery . . . . . . . . . . . . 145
Retained Accessory (RAP) . . . 172
Seat Adjustment . . . . . . . . . . . . . . . . 54
Windows . . . . . . . . . . . . . . . . . . . . . . . 45
Pregnancy, Using Seat Belts . . . . 66
Privacy Vehicle Data Recording . . . . . . . 319
Program
Courtesy Transportation . . . . . . 313
Proposition 65 Warning,
California . . . . . . . . . . . .214, 233, 276, Back Cover
R
Radio Frequency Statement . . . . 317
Reading Lamps . . . . . . . . . . . . . . . . . 143
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 60
Rear Vision Camera (RVC) . . . . . 192
Rearview Mirrors . . . . . . . . . . . . . . . . 45 Rearview Mirrors (cont'd)
Automatic Dimming . . . . . . . . . . . . . 45
Reclining Seatbacks . . . . . . . . . . . . . 55
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 301
Records Maintenance . . . . . . . . . . . . . . . . . . 303
Recreational Vehicle Towing . . . . 279
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 311
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . . . 34
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maintenance . . . . . . . . . . . . . . . . . . 302
Replacing Airbag System . . . . . . . . 80
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . 93
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 68
Reporting Safety Defects Canadian Government . . . . . . . . 318
General Motors . . . . . . . . . . . . . . . 318
U.S. Government . . . . . . . . . . . . . 318
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 86 Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 172
Reverse Tilt Mirrors . . . . . . . . . . . . . . 44
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 160
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 311
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 47
Rotation, Tires . . . . . . . . . . . . . . . . . . 262
Routing, Engine Drive Belt . . . . . . 306
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 174
S
Safety Defects ReportingCanadian Government . . . . . . . . 318
General Motors . . . . . . . . . . . . . . . 318
U.S. Government . . . . . . . . . . . . . 318
Safety Locks . . . . . . . . . . . . . . . . . . . . . 39
Safety System Check . . . . . . . . . . . . 67
Scheduling Appointments . . . . . . . 313
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 62 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Extender . . . . . . . . . . . . . . . . . . . . . . . . 67
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 63
Lap-Shoulder Belt . . . . . . . . . . . . . . 64

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