2010 CHEVROLET IMPALA fuel pressure

Service............................................................6-3
Accessories and Modifications..........................6-3
California Proposition 65 Warning.....................6-4
California Perchlorate Materials Requirements.....6-4
Doing Your Own Service Work.........................6-4
Adding Equipment to the Outside of the
Vehicle . . . . ..................................................6-5
Fuel................................................................6-5
Gasoline Octane............................................6-6
Gasoline Specifications....................................6-6
California Fuel...............................................6-6
Additives.......................................................6-7
Fuel E85 (85% Ethanol)..................................6-8
Fuels in Foreign Countries...............................6-9
Filling the Tank............................................6-10
Filling a Portable Fuel Container.....................6-12
Checking Things Under the Hood....................6-12
Hood Release..............................................6-13
Engine Compartment Overview.......................6-14
Engine Oil...................................................6-15
Engine Oil Life System..................................6-18
Engine Air Cleaner/Filter................................6-19
Automatic Transmission Fluid.........................6-22
Cooling System............................................6-24Engine Coolant.............................................6-25
Engine Overheating.......................................6-29
Overheated Engine Protection
Operating Mode........................................6-32
Power Steering Fluid.....................................6-32
Windshield Washer Fluid . . ..............................6-33
Brakes........................................................6-35
Battery........................................................6-38
Jump Starting...............................................6-39
Headlamp Aiming...........................................6-43
Bulb Replacement..........................................6-43
Halogen Bulbs..............................................6-43
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps....................................6-44
Taillamps, Turn Signal, Sidemarker,
Stoplamps and Back-up Lamps...................6-47
License Plate Lamp......................................6-49
Replacement Bulbs.......................................6-49
Windshield Wiper Blade Replacement..............6-49
Tires..............................................................6-51
Tire Sidewall Labeling . . .................................6-52
Tire Terminology and Definitions . . ...................6-56
Inflation - Tire Pressure.................................6-59
Section 6 Service and Appearance Care
6-1

A. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 6-33.
B. Battery. SeeBattery on page 6-38.
C. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 6-97.
D. Remote Positive (+) Terminal. SeeJump Starting on
page 6-39.
E. Coolant Recovery Tank. See “Checking Coolant”
underCooling System on page 6-24.
F. Pressure Cap. SeeCooling System on page 6-24.
G. Power Steering Fluid Cap. SeePower Steering Fluid
on page 6-32.
H. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 6-15.
I. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 6-15.
J. Automatic Transmission Fluid Dipstick (Out of View).
See “Checking the Fluid Level” underAutomatic
Transmission Fluid on page 6-22.
K. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 6-35.
L. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 6-19.
Engine OilChecking Engine OilIt is a good idea to check the engine oil level at each
fuel fill. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 6-14
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If this is not done, the
oil dipstick might not show the actual level.
2. Pull out the dipstick and clean it with a paper towel
or cloth, then push it back in all the way. Remove it
again, keeping the tip down, and check the level.
6-15

Tire Terminology and DefinitionsAir Pressure
:
The amount of air inside the
tire pressing outward on each square inch of the
tire. Air pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory Weight
:
This means 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.
Belt
:
A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire
:
A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.Cold Tire Pressure
:
The amount of air pressure
in a tire, measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire has built up
heat from driving. SeeInflation - Tire Pressure
on page 6-59.
Curb Weight
:
The weight of a motor vehicle with
standard and optional equipment including the
maximum capacity of fuel, oil, and coolant,
but without passengers and cargo.
DOT Markings:
A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identification Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
GVWR
:
Gross Vehicle Weight Rating.
SeeLoading the Vehicle on page 5-20.
GAWR FRT
:
Gross Axle Weight Rating for the
front axle. SeeLoading the Vehicle on page 5-20.
6-56

Inflation - Tire PressureTires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-inflation or over-inflation is all right.
It is not. If your tires do not have enough air
(under-inflation), you can get the following:•
Too much flexing
•
Too much heat
•
Tire overloading
•
Premature or irregular wear
•
Poor handling
•
Reduced fuel economy
If your tires have too much air (over-inflation),
you can get the following:
•
Unusual wear
•
Poor handling
•
Rough ride
•
Needless damage from road hazardsA vehicle specific Tire and Loading Information
label is attached to your vehicle. This label shows
your vehicle’s original equipment tires and the
correct inflation pressures for your tires when they
are cold. The recommended cold tire inflation
pressure, shown on the label, is the minimum
amount of air pressure needed to support
your vehicle’s maximum load carrying capacity.
For additional information regarding how much
weight your vehicle can carry, and an example
of the Tire and Loading Information label,
seeLoading the Vehicle on page 5-20. How you
load your vehicle affects vehicle handling and
ride comfort. Never load your vehicle with more
weight than it was designed to carry.
When to CheckCheck your tires once a month or more. Do not
forget to check the compact spare tire, it should
be at 60 psi (420 kPa). For additional information
regarding the compact spare tire, seeCompact
Spare Tire on page 6-86.
6-59

Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires as
soon as possible, and inflate them to the proper
pressure. Driving on a significantly under-inflated tire
causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling
and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation
has not reached the level to trigger illumination of
the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is not
operating properly. The TPMS malfunction indicator is
combined with the low tire pressure telltale. When
the system detects a malfunction, the telltale will flash
for approximately one minute and then remain
continuously illuminated. This sequence will continue
upon subsequent vehicle start-ups as long as the
malfunction exists.When the malfunction indicator is illuminated, the
system may not be able to detect or signal low tire
pressure as intended. TPMS malfunctions may occur
for a variety of reasons, including the installation
of replacement or alternate tires or wheels on the vehicle
that prevent the TPMS from functioning properly.
Always check the TPMS malfunction telltale after
replacing one or more tires or wheels on your vehicle
to ensure that the replacement or alternate tires
and wheels allow the TPMS to continue to function
properly.
SeeTire Pressure Monitor Operation on page 6-62for
additional information.
Federal Communications Commission
(FCC) and Industry and Science CanadaSeeRadio Frequency Statement on page 8-20for
information regarding Part 15 of the Federal
Communications Commission (FCC) Rules and
RSS-210/211 of Industry and Science Canada.
6-61

•
Automatic transmission fluid level check and adding
fluid, if needed. SeeAutomatic Transmission Fluid
on page 6-22.
•
Engine air cleaner filter inspection. SeeEngine Air
Cleaner/Filter on page 6-19.
•
Passenger compartment air filter replacement
(or every 12 months, whichever occurs first).
More frequent replacement may be required if
vehicle is driven regularly under dusty conditions.
Additional Required ServicesAt Each Fuel Stop
•
Engine oil level check. SeeEngine Oil on
page 6-15.
•
Engine coolant level check. SeeEngine Coolant on
page 6-25.
•
Windshield washer fluid level check. SeeWindshield
Washer Fluid on page 6-33.
Once a Month
•
Tire inflation check. SeeInflation - Tire Pressure on
page 6-59.
•
Tire wear inspection. SeeTire Inspection and
Rotation on page 6-65.
Once a Year
•
Starter switch check. SeeOwner Checks and
Services on page 7-8.
•
Parking brake and automatic transmission P (Park)
mechanism check. SeeOwner Checks and
Services on page 7-8.
•
Automatic transmission shiftlock control system
check. SeeOwner Checks and Services on
page 7-8.
•
Ignition transmission lock check. SeeOwner
Checks and Services on page 7-8.
•
Engine cooling system and pressure cap pressure
check. Radiator and air conditioning condenser
outside cleaning. SeeCooling System on
page 6-24.
•
Exhaust system and nearby heat shields inspection
for loose or damaged components.
•
Throttle system inspection for interference, binding
or for damaged or missing parts. Replace parts as
needed. Replace any components that have
high effort or excessive wear. Do not lubricate
accelerator or cruise control cables.
7-5

First Engine Oil Change After Every
40 000 km/25,000 Miles
•
Fuel system inspection for damage or leaks.
First Engine Oil Change After Every
80 000 km/50,000 Miles
•
Engine air cleaner filter replacement. SeeEngine
Air Cleaner/Filter on page 6-19.
•
Automatic transmission fluid change (severe
service) for vehicles mainly driven in heavy
city traffic in hot weather, in hilly or mountainous
terrain, when frequently towing a trailer, or used for
taxi, police, or delivery service. SeeAutomatic
Transmission Fluid on page 6-22.
First Engine Oil Change After Every
160 000 km/100,000 Miles
•
Automatic transmission fluid change (normal
service). SeeAutomatic Transmission Fluid
on page 6-22.
•
Spark plug replacement and spark plug wires
inspection.An Emission Control Service.
First Engine Oil Change After Every
240 000 km/150,000 Miles
•
Engine cooling system drain, flush, and refill,
cooling system and cap pressure check, and
cleaning of outside of radiator and air conditioning
condenser (or every 5 years, whichever occurs
first). SeeEngine Coolant on page 6-25.
An Emission Control Service.
•
Engine accessory drive belt inspection for fraying,
excessive cracks, or obvious damage and
replacement, if needed.An Emission Control
Service.
7-6