CHEVROLET IMPALA 2012 9.G Owners Manual

Black plate (29,1)Chevrolet Impala Owner Manual - 2012
Vehicle Care 10-29
License Plate Lamp
To replace one of these bulbs:
1. Remove the two screws (A) fromthe license plate lamp assembly.
2. Pull the lamp assembly down and turn the bulb socket
counterclockwise and out of the
lamp assembly.
3. Pull the old bulb straight out of the socket.
4. Install the new bulb.
5. Reverse Steps 1 through 3 to reinstall the license plate lamp
assembly.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up 921LL
Front Parking/Turn
Signal 3157NAK
License
Plate Lamp 194LL
Headlamps High-Beam H9
Low-Beam H11
Sidemarker 194LL
Stoplamp,
Taillamp, and Turn
Signal 3057
For replacement bulbs not listed
here, contact your dealer.
Electrical System
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.

Black plate (30,1)Chevrolet Impala Owner Manual - 2012
10-30 Vehicle Care
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.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of fires caused by electrical
problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
you replace a bad fuse with a new
one of the identical size and rating.
Engine Compartment
Fuse Block
The engine compartment fuse block
is located on the passenger side of
the engine compartment, by the
battery. SeeEngine Compartment
Overview on page 10‑6 for more
information on location.
Notice: Spilling liquid on any
electrical component on the
vehicle may damage it. Always
keep the covers on any electrical
component.

Black plate (31,1)Chevrolet Impala Owner Manual - 2012
Vehicle Care 10-31
The vehicle may not have all of the
fuses, relays, and features shown.Fuses Usage
A/C CMPRSR Air Conditioning
Compressor
ABS MTR 1 Antilock Brake
System (ABS)
Motor 1
ABS MTR 2 ABS Motor 2
AIR PUMP Air Pump
AIR SOL Air Injection
Reactor Solenoid
AIRBAG/
DISPLAY Airbag, Display
AUX PWR Auxiliary Power
BATT 1 Battery 1
BATT 2 Battery 2
BATT 3 Battery 3
BATT 4 Battery 4
BCM Body Control
Module (BCM)

Black plate (32,1)Chevrolet Impala Owner Manual - 2012
10-32 Vehicle Care
FusesUsage
CHMSL/
BCK‐UP Center
High‐Mounted
Stoplamp,
Back‐up Lamp
DISPLAY Display
DRL 1 Daytime Running
Lamps 1
DRL 2 Daytime Running
Lamps 2
ECM IGN Engine Control
Module (ECM),
Ignition
ECM/TCM ECM,
Transmission
Control
Module (TCM) Fuses
Usage
EMISSIONS 1 Emissions 1
EMISSIONS 2 Emissions 2
ETC/ECM Electronic
Throttle
Control, ECM
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
FOG LAMPS Fog Lamps
(If Equipped)
FSCM Fuel System
Control Module
HDLP MDL Headlamp
Module
HORN Horn
HTD MIR Heated Mirror Fuses
Usage
IGN 1 Ignition 1
INJ 2 Injector 2
INT LIGHTS Interior Lamps
INT LTS/
PNL DIM Interior Lamps,
Instrument Panel
Dimmer
LT HI BEAM Driver Side
High‐Beam
Headlamp
LT LO BEAM Driver Side
Low‐Beam
Headlamp
LT PARK Driver Side
Parking Lamp
LT SPOT Left Spot
LT T/SIG Driver Side Turn
Signal Lamp

Black plate (33,1)Chevrolet Impala Owner Manual - 2012
Vehicle Care 10-33
FusesUsage
ONSTAR OnStar
PWR DROP/
CRANK Power Drop,
Crank
RADIO Audio System
RT HI BEAM Passenger Side
High‐Beam
Headlamp
RT LO BEAM Passenger Side
Low‐Beam
Headlamp
RT PARK Passenger Side
Parking Lamp
RT SPOT Right Spot Fuses
Usage
RT T/SIG Passenger Side
Turn Signal Lamp
RVC SEN Regulated
Voltage Control
Sensor
STRG WHL Steering Wheel
STRTR Starter
TRANS Transmission
VAC/PUMP Vacuum Pump
WPR Wiper
WSW Windshield Wiper Relay
Usage
A/C
CMPRSR Air Conditioning
Compressor
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
FAN 3 Cooling Fan 3
VAC/PUMP Vacuum Pump
PWR/TRN Powertrain
REAR
DEFOG Rear Defogger
STRTR Starter

Black plate (34,1)Chevrolet Impala Owner Manual - 2012
10-34 Vehicle Care
Instrument Panel Fuse
Block
The fuse block is on the passenger
side of the vehicle in the carpet
molding. Remove the fuse block
door to access the fuses.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
AIRBAG Airbags
AMP Amplifier
AUX Auxiliary Outlets
CNSTR Canister
DR/LCK Door Locks
HTD/SEAT Heated Seats
PWR/MIR Power Mirrors
PWR/SEAT Power Seats
PWR/WNDW Power Window
RAP Retained
Accessory Power
S/ROOF Sunroof
TRUNK Trunk
TRUNK Trunk Relay
XM XM™Radio

Black plate (35,1)Chevrolet Impala Owner Manual - 2012
Vehicle Care 10-35
Wheels 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. SeeVehicle
Load Limits on page 9‑11.
(Continued)
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.
.Replace any tires that have
been damaged by impacts
with potholes, curbs, etc.
(Continued)
WARNING (Continued)
.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 55 km/h (35 mph)
on slippery surfaces such as
snow, mud, ice, etc.
Excessive spinning may
cause the tires to explode.

Black plate (36,1)Chevrolet Impala Owner Manual - 2012
10-36 Vehicle Care
Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The
examples show a typical
passenger vehicle tire and a
compact spare tire sidewall.
Passenger (P‐Metric) Tire Example
(A) Tire Size:The tire size is a
combination of letters and
numbers used to define a
particular tire's width, height,
aspect ratio, construction type, and service description. See the
“Tire Size”
illustration later in this
section for more detail.
(B) TPC Spec (Tire
Performance Criteria
Specification)
:Original
equipment tires designed to
GM's specific tire performance
criteria have a TPC specification
code molded onto the sidewall.
GM's TPC specifications meet or
exceed all federal safety
guidelines.
(C) DOT (Department of
Transportation)
:The
Department of Transportation
(DOT) code indicates that
the tire is in compliance
with the U.S. Department of
Transportation Motor Vehicle
Safety Standards.
(D) Tire Identification Number
(TIN)
:The letters and numbers
following the DOT (Department
of Transportation) code are the Tire Identification Number
(TIN). The TIN shows the
manufacturer and plant code,
tire size, and date the tire was
manufactured. The TIN is
molded onto both sides of the
tire, although only one side may
have the date of manufacture.
(E) Tire Ply Material
:The type
of cord and number of plies in
the sidewall and under the tread.
(F) Uniform Tire Quality
Grading (UTQG)
:Tire
manufacturers are required to
grade tires based on three
performance factors: treadwear,
traction, and temperature
resistance. For more information
see Uniform Tire Quality
Grading on page 10‑51.
(G) Maximum Cold Inflation
Load Limit
:Maximum load that
can be carried and the
maximum pressure needed to
support that load.

Black plate (37,1)Chevrolet Impala Owner Manual - 2012
Vehicle Care 10-37
Compact Spare Tire Example
(A) Tire Ply Material:The type
of cord and number of plies in
the sidewall and under the tread.
(B) Temporary Use Only
:The
compact spare tire or temporary
use tire has a tread life of
approximately 5 000 km
(3,000 mi) and should not be
driven at speeds over 105 km/h
(65 mph). The compact spare
tire is for emergency use when a regular road tire has lost air and
gone flat. If the vehicle has a
compact spare tire, see
Compact Spare Tire on
page 10‑63
andIf a Tire Goes
Flat on page 10‑54.
(C) Tire Identification Number
(TIN)
:The letters and numbers
following the DOT (Department
of Transportation) code are the
Tire Identification Number
(TIN). The TIN shows the
manufacturer and plant code,
tire size, and date the tire was
manufactured. The TIN is
molded onto both sides of the
tire, although only one side may
have the date of manufacture.
(D) Maximum Cold Inflation
Load Limit
:Maximum load that
can be carried and the
maximum pressure needed to
support that load. (E) Tire Inflation
:The
temporary use tire or compact
spare tire should be inflated to
420 kPa (60 psi). For more
information on tire pressure and
inflation see Tire Pressure on
page 10‑41.
(F) Tire Size
:A combination of
letters and numbers define a
tire's width, height, aspect ratio,
construction type, and service
description. The letter T as the
first character in the tire size
means the tire is for temporary
use only.
(G) TPC Spec (Tire
Performance Criteria
Specification)
:Original
equipment tires designed to
GM's specific tire performance
criteria have a TPC specification
code molded onto the sidewall.
GM's TPC specifications meet or
exceed all federal safety
guidelines.

Black plate (38,1)Chevrolet Impala Owner Manual - 2012
10-38 Vehicle Care
Tire Designations
Tire Size
The following is an example of a
typical passenger vehicle
tire size.
(A) Passenger (P‐Metric) Tire:
The United States version of a
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire
and Rim Association.
(B) Tire Width
:The three‐digit
number indicates the tire section
width in millimeters from
sidewall to sidewall. (C) Aspect Ratio
:A two‐digit
number that indicates the tire
height‐to‐width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item C of the illustration, it would
mean that the tire's sidewall is
60 percent as high as it is wide.
(D) Construction Code
:A
letter code is used to indicate
the type of ply construction in
the tire. The letter R means
radial ply construction; the
letter D means diagonal or bias
ply construction; and the letter B
means belted‐bias ply
construction.
(E) Rim Diameter
:Diameter of
the wheel in inches.
(F) Service Description
:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
steering, power brakes, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire's height to its width.