2009 PONTIAC G8 fuel pressure

Tire Terminology and
Denitions
Air 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 9-49.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 Identication
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 8-30.
9-46 Vehicle Service and Care

Ination - Tire Pressure
Tires need the correct amount
of air pressure to operate
effectively.
Notice:Do not let anyone tell
you that under-ination or
over-ination is all right. It is
not. If your tires do not have
enough air (under-ination),
you can get the following:
 Too much exing
 Too much heat
 Tire overloading
 Premature or irregular wear
 Poor handling
 Reduced fuel economyIf your tires have too much air
(over-ination), you can get
the following:
 Unusual wear
 Poor handling
 Rough ride
 Needless damage from
road hazards
A vehicle specic Tire and
Loading Information label is
attached to the vehicle’s center
pillar, below the driver’s door
latch. This label lists the
vehicle’s original equipment tires
and the recommended cold
tire ination pressure for the tires
when they are cold. The
recommended cold tire ination
pressure, shown on the label,is the minimum amount of air
pressure needed to support your
vehicle’s maximum load
carrying capacity. For more
information regarding how much
weight your vehicle can carry,
seeLoading the Vehicle on
page 8-30.
How you load your vehicle
affects vehicle handling and ride
comfort. When driving with
less than the maximum load
capacity allowed for your vehicle,
you can set tire ination
pressure to the recommended
amounts shown in the following
chart. Never load your vehicle
with more weight than it
was designed to carry.
Vehicle Service and Care 9-49

Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inate them to
the proper pressure. Driving on a
signicantly under-inated tire
causes the tire to overheat and can
lead to tire failure. Under-ination
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-ination
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 telltalewill ash 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 9-54for
additional information.Federal Communications
Commission (FCC) and
Industry and Science Canada
The Tire Pressure Monitor System
(TPMS) operates on a radio
frequency and complies with
Part 15 of the FCC Rules.
Operation is subject to the
following two conditions:
1. This device may not cause
harmful interference.
2. This device must accept any
interference received, including
interference that may cause
undesired operation.
Vehicle Service and Care 9-53

Owner Checks and
Services
These owner checks and services
should be performed at the intervals
specied to help ensure vehicle
safety, dependability, and emission
control performance. Your dealer/
retailer can assist with these checks
and services.
Be sure any necessary repairs are
completed at once. Whenever
any uids or lubricants are added to
the vehicle, make sure they are
the proper ones, as shown in
Recommended Fluids and
Lubricants on page 11-12.
At Each Fuel Fill
It is important to perform these
underhood checks at each fuel fill.
Engine Oil Level Check
Notice:It is important to check
the engine oil regularly and keep it
at the proper level. Failure to keep
the engine oil at the proper level
can cause damage to the engine
not covered by the vehicle
warranty.
Check the engine oil level and
add the proper oil if necessary.
SeeEngine Oil on page 9-8.
Engine Coolant Level Check
Check the engine coolant level
and add DEX-COOL®coolant
mixture if necessary. SeeEngine
Coolant on page 9-15.
Windshield Washer Fluid
Level Check
Check the windshield washer uid
level in the windshield washer
uid reservoir and add the proper
uid if necessary.
At Least Once a Month
Tire Ination Check
Inspect the vehicle’s tires and make
sure they are inated to the correct
pressures. Do not forget to check
the spare tire, if the vehicle has one.
SeeInflation - Tire Pressure on
page 9-49. If the vehicle has a spare
tire, check to make sure it is stored
securely. SeeChanging a Flat Tire
on page 9-75.
Tire Wear Inspection
Tire rotation may be required for
high mileage highway drivers prior to
the Engine Oil Life System service
notication. Check the tires for
wear and, if necessary, rotate the
tires. SeeTire Inspection and
Rotation on page 9-57.
Service and Maintenance 11-9

Electrical System (cont.)
Power Windows and
Other Power Options.....9-36
Rear Compartment
Fuse Block...................9-41
Windshield Wiper Fuses....9-36
Electronic Stability Program....8-19
Engine
Air Cleaner/Filter...............9-11
Check and Service Engine
Soon Lamp..................4-18
Coolant...........................9-15
Coolant Heater................... 8-5
Coolant
Temperature Gage.........4-17
Drive Belt Routing...........11-14
Engine Compartment
Overview....................... 9-6
Exhaust...........................8-14
Oil ................................... 9-8
Oil Life System.................9-10
Overheating.....................9-20
Starting............................. 8-4
Event Data Recorders.........12-16
Extender, Safety Belt............1-18
Exterior Lamps...................... 5-1F
Filter
Engine Air Cleaner............9-11
Finish Damage...................9-102
Fixed Mast Antenna.............6-37
Flashers, Hazard Warning....... 4-4
Flat Tire..............................9-66
Flat Tire, Changing...............9-75
Flat Tire, Storing..................9-82
Fluid
Power Steering.................9-21
Windshield Washer...........9-23
Fog Lamp
Fog .................................. 5-3
Fog Lamp Light...................4-20
Fuel...................................8-34
Additives.........................8-36
California Fuel..................8-35
Filling a Portable Fuel
Container.....................8-38
Filling the Tank.................8-37
Fuels in Foreign
Countries.....................8-36
Gage ..............................4-21
Gasoline Octane...............8-35
Gasoline Specications......8-35Fuses
Engine Compartment
Fuse Block...................9-38
Instrument Panel Fuse
Block...........................9-36
Rear Compartment Fuse
Block...........................9-41
Windshield Wiper..............9-36
G
Gage
Engine Coolant
Temperature.................4-17
Fuel................................4-21
Oil Pressure.....................4-21
Speedometer...................4-12
Tachometer......................4-12
Voltmeter Gage................4-15
Gasoline
Octane............................8-35
Specications...................8-35
Glove Box............................ 3-1
GM Mobility Reimbursement
Program..........................12-5
i-4 INDEX

Light (cont.)
Brake System Warning......4-15
Charging System..............4-15
Daytime Running Lamps
Indicator.......................4-21
Door Ajar.........................4-21
Fog Lamp ........................4-20
Highbeam On...................4-20
Passenger Airbag Status
Indicator.......................4-14
Safety Belt Reminders.......4-12
Security...........................4-20
Tire Pressure...................4-17
Lighting
Perimeter.......................... 5-4
Lights
Exterior Lamps................... 5-1
High/Low Beam Changer..... 4-7
Loading Your Vehicle............8-30
Locks
Door ................................. 2-8
Power Door ....................... 2-9
Rear Door Security Locks.... 2-9
Loss of Control....................8-23
Lower Anchors and Tethers
for Children......................1-42
Lumbar Seat Adjustment......... 1-2M
Maintenance Schedule
Additional Required
Services.......................11-6
At Each Fuel Fill..............11-9
At Least Once a Month.....11-9
At Least Once a Year......11-10
Introduction......................11-1
Maintenance Footnotes......11-7
Maintenance Record........11-15
Maintenance
Requirements...............11-2
Normal Maintenance
Replacement Parts.......11-13
Owner Checks and
Services.......................11-9
Recommended Fluids and
Lubricants...................11-12
Scheduled Maintenance.....11-4
Using..............................11-2
Your Vehicle and the
Environment.................11-2
Malfunction Indicator Lamp....4-18
Manual Seats........................ 1-2
Manual Transmission
Operation........................8-10Message
DIC Warnings and
Messages....................4-26
Mirrors
Manual Rearview Mirror.....2-16
Outside Convex Mirror.......2-18
Outside Power Mirrors.......2-17
MP3 ...................................6-20
MyGMLink.com....................12-3
N
Navigation System,
Privacy..........................12-17
New Vehicle Break-In............. 8-2
Normal Maintenance
Replacement Parts..........11-13
Notices and Cautions............... iii
O
Off-Road Recovery...............8-23
Oil
Engine.............................. 9-8
Pressure Gage.................4-21
Oil, Engine Oil Life System....9-10
Older Children, Restraints......1-34
i-6 INDEX