2020 CHEVROLET IMPALA headlamp

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
222 Vehicle Care
1. Open the hood. SeeHood
0 201.
2. For the driver side bulb, remove the windshield washer
bottle filler neck by firmly
pulling it straight up and out of
the bottle.
3. Remove the cap from the back of the headlamp assembly by
turning it counterclockwise.
4. Disconnect the electricalconnector.
5. Remove the bulb from the lamp assembly by turning
counterclockwise.
6. Install a new bulb in the lamp assembly. 7. Connect the electrical
connector.
8. Replace the cap on the back of the headlamp assembly by
turning it clockwise.
9. For the driver side, reinstall the windshield washer bottle filler
neck by firmly pushing it
straight into the bottle. Ensure
that the filler neck clip engages
into the underhood electrical
center retainer.
Uplevel Headlamp Assembly
The uplevel model vehicle has a
high intensity discharge (HID) high/
low-beam headlamp, a parking/turn
signal lamp, and a sidemarker lamp
on the headlamp assembly.
For replacement of the headlamp on
an HID assembly, contact your
dealer. See High Intensity
Discharge (HID) Lighting 0221.
Driver Side Shown, Passenger
Side Similar
1. Sidemarker Lamp
2. Parking/Turn Signal Lamp
Front Turn Signal, Parking, and
Sidemarker Lamps
To replace one of these lamps on a
base or uplevel assembly:
1. For the driver side bulb, remove the windshield washer
bottle filler neck by firmly
pulling it straight up and out of
the bottle.
2. Remove the bulb socket from the headlamp assembly by
turning it counterclockwise.
3. Remove the bulb from the socket.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 223
4. Replace the bulb in the bulbsocket.
5. Install the bulb socket in the headlamp assembly by turning
it clockwise.
6. For the driver side, reinstall the windshield washer bottle filler
neck by firmly pushing it
straight into the bottle. Ensure
that the filler neck clip engages
into the underhood electrical
center retainer.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
Trunk Deck Inboard Taillamp
1. Open the trunk. See Trunk
0 20.
2. Remove the push pins and pull back the trunk deck trim.
3. Remove the bulb socket byturning counterclockwise and
pulling straight out.
4. Remove the bulb from the socket by pulling it straight out.
5. Install the new bulb in the bulb socket.
6. Install the bulb socket by turning clockwise.
7. Install the trunk deck trim.
Stoplamp/Taillamp/Turn Signal
Lamp and Back-Up Lamp
Driver Side Shown, Passenger Side Similar
1. Back-Up Lamp
2. Stoplamp/Taillamp/TurnSignal Lamp
Caution
Improper lamp assembly removal
and installation can cause leaks
and water intrusion which may
cause damage to the taillamp. Do
(Continued)

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 225
Electrical System
High Voltage Devices and
Wiring
{Warning
Exposure to high voltage can
cause shock, burns, and even
death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering or labels. Do not
probe, tamper with, cut, or modify
high voltage cable or wiring.
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
228 Vehicle Care
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 Fuses Usage
11 Mass air flow sensor/ Intake air
temperature/Humidity/
Temperature intake air
pressure/Post
catalytic converter O2
sensors
12 Starter/Starter pinion
13 Transmission control module/Chassis
control module/
Ignition
14 Cabin coolant pump
17 Ventilated front seats/ Heated steering wheel
18 Battery disconnect unit
19 Aeroshutter
20 Transmission auxiliary pump
21 Rear power window
22 Sunroof
23 Adaptive cruise control Fuses Usage
24 Front power window
25 Retained accessory power
26 ABS pump
27 Electric parking brake
28 Rear defogger
29 Passive entry/Passive start
30 Canister vent solenoid
31 Heated seat –driver
32 LED Backlight Dimming Control/Left
headlamp low-beam/
Right rear stop/turn
lamp/RAP relay/LED
ambient lighting/
Dome-reading lamps
33 Heated seat –
passenger
34 ABS valve
35 Amplifier
37 Right high-beam headlamp

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 229
FusesUsage
38 Left high-beam headlamp
41 Vacuum pump
42 Cooling fan high speed
44 Starter control
45 Cooling fan low speed
46 Cooling fan control
47 Pre catalytic converter O2 sensors/Canister
purge solenoid
49 Right HID headlamp
50 Left HID headlamp
51 Horn
52 Display/Ignition
53 Inside rearview mirror/ Rear vision camera
54 Instrument panel/ Ignition
55 Exterior rearview mirror
56 Front washer Fuses
Usage
60 Heated mirror
62 Obstacle detection
64 Rain sensor/Rear seat audio
66 Trunk release
67 Chassis control module
69 Battery voltage sensor
71 Memory seat
Relays Usage
1 A/C clutch
2 Starter pinion
4 Front wiper speed
5 Front wiper control
6 Cabin Coolant pump/ Air solenoid
7 Powertrain
8 Transmission auxiliary pump
9 Cooling fan high speed Relays
Usage
10 Cooling fan low speed 11 Starter
13 Cooling fan control
14 Low-beam HID headlamp
15 Run/Crank
17 Rear window defogger
Instrument Panel Fuse
Block
The instrument panel fuse block is
in the instrument panel, on the
driver side of the vehicle.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 231
FusesUsage
9 Trunk lamp/Right low-beam headlamp/
DRL/Right front turn
lamp/Right rear
parking lamp/
Stoplamp
10 Door unlock 11 Front HVAC blower
12 Passenger power seat
13 Driver power seat
14 Diagnostic link connector
15 Airbag/SDM
16 Right rear heated seat
17 HVAC Controller
18 Logistics
19 Left rear heated seat
20 Ignition switch
21 Telematics Fuses
Usage
22 Steering wheel controls
23 Left low-beam headlamp/DRL/Left
front turnlamp/Left
rear parking lamp/
Stoplamp/Safety
lock relay
24 Theft deterrent LED/ Key capture
solenoid/Run relay
25 Tilt/Telescoping steering column
26 110V AC
Relays Usage
K1 –
K2 Logistic
K3 Power outlet relayWheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much
flexing. There could be a
blowout and a serious
crash. See Vehicle Load
Limits 0147.
(Continued)

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
Vehicle Care 251
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.
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any of
these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the one it
replaces.Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
Do not use tire chains. There is
not enough clearance. Tire chains
used on a vehicle without the
proper amount of clearance can
cause damage to the brakes,
suspension, or other vehicle
parts. The area damaged by the
tire chains could cause loss of
control and a crash.
(Continued)

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/5/19
282 Service and Maintenance
.To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
. Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping. .
Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0284 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed. Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.
Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
. With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
. Signs of wear may include
steering wheel vibration, bounce/
sway while braking, longer
stopping distance, or uneven
tire wear.
. As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs