octane PONTIAC G8 2009 Owners Manual

This light comes on during a
malfunction in one of two ways:
Light Flashing:A misre condition
has been detected. A misre
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
The following can prevent more
serious damage to the vehicle:
Reduce vehicle speed.
Avoid hard accelerations.
Avoid steep uphill grades.
If towing a trailer, reduce the
amount of cargo being hauled
as soon as it is possible.
If the light continues to ash,
when it is safe to do so, stop the
vehicle. Find a safe place to
park the vehicle. Turn the key off,
wait at least 10 seconds, and restart
the engine. If the light is still ashing,
follow the previous steps and see
your dealer/retailer for service as
soon as possible.Light On Steady:An emission
control system malfunction has been
detected on the vehicle. Diagnosis
and service might be required.
An emission system malfunction
might be corrected by doing
the following:
Make sure the fuel cap is fully
installed. SeeFilling the Tank on
page 8-37. The diagnostic system
can determine if the fuel cap
has been left off or improperly
installed. A loose or missing fuel
cap allows fuel to evaporate into
the atmosphere. A few driving
trips with the cap properly
installed should turn the light off.
If the vehicle has been driven
through a deep puddle of water,
the vehicle’s electrical system
might be wet. The condition is
usually corrected when the
electrical system dries out.
A few driving trips should turn
the light off.
Make sure to fuel the vehicle with
quality fuel. Poor fuel quality
causes the engine not to run as
efficiently as designed and may
cause: stalling after start-up,
stalling when the vehicle is
changed into gear, misring,
hesitation on acceleration, or
stumbling on acceleration.
These conditions might go away
once the engine is warmed up.
If one or more of these conditions
occurs, change the fuel brand
used. It will require at least one
full tank of the proper fuel to turn
the light off.
SeeGasoline Octane on
page 8-35.
If none of the above have made the
light turn off, your dealer/retailer can
check the vehicle. The dealer/retailer
has the proper test equipment and
diagnostic tools to x any mechanical
or electrical problems that might
have developed.
Instruments and Controls 4-19

Driving and
Operating
Starting and Operating
Your Vehicle
New Vehicle Break-In.........8-2
Ignition Positions................8-2
Retained Accessory
Power (RAP).....................8-3
Starting the Engine.............8-4
Engine Coolant Heater.......8-5
Automatic Transmission
Operation..........................8-6
Manual Transmission
Operation........................8-10
Parking Brake...................8-11
Shifting Into Park
(Automatic
Transmission)
..................8-12
Shifting Out of Park..........8-13
Parking the Vehicle
(Manual Transmission). . . .8-14
Parking Over Things
That Burn........................8-14
Engine Exhaust.................8-14
Running the Vehicle
While Parked..................8-15
Driving Your Vehicle
Defensive Driving..............8-16
Drunk Driving....................8-16
Control of a Vehicle..........8-17
Braking.............................8-17
Antilock Brake
System (ABS).................8-18
Electronic Stability
Program..........................8-19
Steering............................8-22
Off-Road Recovery............8-23
Passing.............................8-23
Loss of Control.................8-23
Driving at Night.................8-24
Driving in Rain and
on Wet Roads.................8-25
Before Leaving on
a Long Trip.....................8-26
Highway Hypnosis.............8-26
Hill and Mountain Roads. . . .8-26
Winter Driving...................8-27
If Your Vehicle is Stuck
in Sand, Mud, Ice,
or Snow
..........................8-29
Rocking Your Vehicle
to Get It Out...................8-30
Loading the Vehicle..........8-30
Fuel
Fuel..................................8-34
Gasoline Octane...............8-35
Gasoline Specications.....8-35
California Fuel..................8-35
Additives...........................8-36
Fuels in Foreign
Countries........................8-36
Filling the Tank.................8-37
Filling a Portable
Fuel Container................8-38
Driving and Operating 8-1

Gasoline Octane
If the vehicle has a V8 engine, use
regular unleaded gasoline with a
posted octane rating of 87 or higher.
If the octane rating is less than 87,
you might notice an audible knocking
noise when you drive, commonly
referred to as spark knock. If this
occurs, use a gasoline rated at 87
octane or higher as soon as possible.
If you are using gasoline rated at 87
octane or higher and you hear heavy
knocking, the engine needs service.
If the vehicle has the 3.6L V6 engine
(VIN Code 7), use regular unleaded
gasoline with a posted octane rating
of 87 or higher. For best performance
or trailer towing, you could choose
to use middle grade 89 octane
unleaded gasoline. If the octane
rating is less than 87, you might
notice an audible knocking noise
when you drive, commonly referredto as spark knock. If this occurs,
use a gasoline rated at 87 octane
or higher as soon as possible. If you
are using gasoline rated at
87 octane or higher and you hear
heavy knocking, the engine needs
service.
Gasoline Specications
At a minimum, gasoline should
meet ASTM specication D 4814
in the United States or
CAN/CGSB-3.5 or 3.511 in Canada.
Some gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. SeeAdditives on
page 8-36for additional information.
California Fuel
If the vehicle is certied to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specications. See
the underhood emission control
label. If this fuel is not available in
states adopting California emissions
standards, the vehicle will operate
satisfactorily on fuels meeting federal
specications, but emission control
system performance might be
affected. The malfunction indicator
lamp could turn on and the vehicle
might fail a smog-check test. See
Malfunction Indicator Lamp on
page 4-18. If this occurs, return to
your authorized dealer/retailer for
diagnosis. If it is determined that the
condition is caused by the type of
fuel used, repairs might not be
covered by the vehicle warranty.
Driving and Operating 8-35

Additives
To provide cleaner air, all gasolines
in the United States are now required
to contain additives that help prevent
engine and fuel system deposits
from forming, allowing the emission
control system to work properly. In
most cases, you should not have to
add anything to the fuel. However,
some gasolines contain only the
minimum amount of additive required
to meet U.S. Environmental
Protection Agency regulations. To
help keep fuel injectors and intake
valves clean, or if the vehicle
experiences problems due to dirty
injectors or valves, look for gasoline
that is advertised as TOP TIER
Detergent Gasoline. Also, your
dealer/retailer has additives that will
help correct and prevent most
deposit-related problems.
Gasolines containing oxygenates,
such as ethers and ethanol, and
reformulated gasolines might
be available in your area.We recommend that you use these
gasolines, if they comply with the
specications described earlier.
However, E85 (85% ethanol) and
other fuels containing more than
10% ethanol must not be used in
vehicles that were not designed for
those fuels.
Notice:This vehicle was not
designed for fuel that contains
methanol. Do not use fuel
containing methanol. It can
corrode metal parts in the fuel
system and also damage plastic
and rubber parts. That damage
would not be covered under
the vehicle warranty.
Some gasolines that are
not reformulated for low
emissions can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the
attendant where you buy gasoline
whether the fuel contains MMT.We recommend against the use of
such gasolines. Fuels containing
MMT can reduce the life of
spark plugs and the performance of
the emission control system
could be affected. The malfunction
indicator lamp might turn on. If
this occurs, return to your
dealer/retailer for service.
Fuels in Foreign
Countries
If you plan on driving in another
country outside the United States or
Canada, the proper fuel might be
hard to nd. Never use leaded
gasoline or any other fuel not
recommended in the previous text
on fuel. Costly repairs caused
by use of improper fuel would not
be covered by the vehicle warranty.
To check the fuel availability, ask an
auto club, or contact a major oil
company that does business in the
country where you will be driving.
8-36 Driving and Operating

Maintenance
Requirements
Notice:Maintenance intervals,
checks, inspections, replacement
parts, and recommended uids
and lubricants as prescribed
in this manual are necessary to
keep this vehicle in good working
condition. Any damage caused
by failure to follow scheduled
maintenance might not be
covered by the vehicle warranty.
Your Vehicle and the
Environment
Proper vehicle maintenance not only
helps to keep the vehicle in good
working condition, but also helps the
environment. All recommended
maintenance is important. Improper
vehicle maintenance can even affect
the quality of the air we breathe.Improper uid levels or the wrong tire
ination can increase the level of
emissions from the vehicle. To help
protect the environment, and to keep
the vehicle in good condition, be sure
to maintain the vehicle properly.
Using the Maintenance
Schedule
We want to help keep this vehicle in
good working condition. But we do
not know exactly how you will drive it.
You might drive very short distances
only a few times a week. Or you
might drive long distances all the
time in very hot, dusty weather.
You might use the vehicle in making
deliveries. Or you might drive it to
work, to do errands, or in many
other ways.Because of all the different
ways people use their vehicles,
maintenance needs vary. You might
need more frequent checks and
replacements. So please read the
following and note how you drive.
If you have any questions on how to
keep the vehicle in good condition,
see your dealer/retailer.
This schedule is for vehicles that:carry passengers and cargo
within recommended limits on
the Tire and Loading Information
label. SeeLoading the Vehicle on
page 8-30.
are driven on reasonable road
surfaces within legal driving limits.
use the recommended fuel. See
Gasoline Octane on page 8-35.
The services inScheduled
Maintenance on page 11-4should
be performed when indicated.
SeeAdditional Required Services
on page 11-6andMaintenance
Footnotes on page 11-7for further
information.
11-2 Service and Maintenance

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