service oil PONTIAC G8 2008 Owners Manual

Oil Pressure Gage
The gage shows the engine oil
pressure.
It is located in the center of the
instrument panel.
{CAUTION
Do not keep driving if the oil
pressure is low. If you do, your
engine can become so hot that
it catches re. You or others
could be burned. Check your
oil as soon as possible and
have your vehicle serviced.
Notice:Lack of proper engine oil
maintenance may damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule in this manual for
changing engine oil.
Fuel Gage
The fuel gage shows about how
much fuel you have left, when the
ignition is on.
When the indicator nears empty, the
low fuel warning light will come
on and along with a chime. There is
still a little fuel left, but you should
refuel soon.Here are four things that some
owners ask about. These are normal
and do not indicate a problem
with your fuel gage:
At the service station, the gas
pump shuts off before the
gage reads full.
It takes a little more or less fuel
to ll up than the gage indicated.
The indicator moves a little when
you turn a corner or speed up.
The gage will continue to show
the remaining fuel when the
ignition is turned off.
4-22 Instruments and Controls
2008 - Pontiac G8 Owner Manual

illuminated. If the oil level is normal,
have the system checked at your
dealer/retailer.
You can press
3or8to
acknowledge that you received the
message, but
:Check Oil will
continue to appear in the bottom of
the DIC display until the vehicle
has been serviced.
X Contact Dealer
This message is displayed when
there is a fault in the instrument
panel, see your dealer/retailer.
You can press
3or8to
acknowledge that you received
the message, butXService will
continue to appear in the bottom of
the DIC display until the vehicle
has been serviced.
ICruise On, Cruise Off,
Cruise Active, and Cruise
Inactive
These messages display the status
of the cruise control system. See
Cruise Control on page 4-5for more
information.
Engine Immobilized Refer to
Owners Manual
This message is displayed when the
engine has been shutdown due to
the theft-deterrent system. See
Immobilizer Operation on page 2-12
for more information.
You can press
3or8to
acknowledge that you received the
message, but
AEng Immo will
continue to appear in the bottom of
the DIC display until the vehicle
has been serviced.
BEngine Temp
(Temperature) Hot
This message is displayed when the
engine coolant temperature is
excessively hot. Stop the vehicle as
soon as it is safe to do so. See
Engine Overheating on page 9-16.
You can press
3or8to
acknowledge that you received the
message, but
BTemp Hot will
continue to appear in the bottom of
the DIC display until the vehicle
has been serviced.
.Low Fuel
This message is displayed when the
fuel level is low.
You can press
3or8to
acknowledge that you received the
message, but
.Low Fuel will
continue to appear in the bottom
of the DIC display until the fuel
tank has been lled above the low
fuel level.
Instruments and Controls 4-29
2008 - Pontiac G8 Owner Manual

Service Charging System
This message is displayed when
there is a fault in the battery
charging system, see your
dealer/retailer.
You can press
3or8to
acknowledge that you received the
message, but
"Low Batt will
continue to appear in the bottom of
the DIC display until the vehicle
has been serviced.
:Service Engine Oil
This message is displayed when the
engine oil needs to be changed.
When you change the engine oil, be
sure to reset the Oil Life System.
SeeEngine Oil Life System on
page 9-10for information on how to
reset the message. SeeEngine
Oil on page 9-8andScheduled
Maintenance on page 11-4for more
information.
vService Vehicle Soon
This message is displayed when
there is a problem with the vehicle,
see your dealer/retailer.
You can press
3or8to
acknowledge that you received the
message, but
*Service will
continue to appear in the bottom of
the DIC display until the vehicle
has been serviced.
DSport Shift
This message is displayed when the
automatic transmission is operating
in sport shift mode.
SeeAutomatic Transmission
Operation on page 8-6.
LStability Ctrl (Control)
Assistance
This message is displayed when the
Electronic Stability Program
(ESP
®) is actively helping the
vehicle with road grip and stability.
ESP CTRL appears at the bottom
of the display and remains
illuminated as long as the ESP is
actively helping with road grip
and stability. SeeElectronic Stability
Program on page 8-16.
FStability Ctrl (Control) Off
This message is displayed when the
ESP has been turned off.
SeeElectronic Stability Program on
page 8-16. If this message is
displayed and you have not turned
off the ESP, it means there is a
problem with the ESP, see
your dealer/retailer.
Instruments and Controls 4-31
2008 - Pontiac G8 Owner Manual

Before Leaving on a
Long Trip
To prepare your vehicle for a long
trip, consider having it serviced
by your dealer/retailer before
departing.
Things to check on your own include:
Windshield Washer Fluid:
Reservoir full? Windows
clean — inside and outside?
Wiper Blades:In good shape?
Fuel, Engine Oil, Other Fluids:
All levels checked?
Lamps:Do they all work and are
lenses clean?
Tires:Are treads good? Are tires
inated to recommended
pressure?
Weather and Maps:Safe to
travel? Have up-to-date maps?
Highway Hypnosis
Always be alert and pay attention to
your surroundings while driving.
If you become tired or sleepy, nd a
safe place to park your vehicle
and rest.
Other driving tips include:
Keep the vehicle well ventilated.
Keep interior temperature cool.
Keep your eyes moving — scan
the road ahead and to the sides.
Check the rearview mirror and
vehicle instruments often.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on at or rolling terrain. Tips for
driving in these conditions include:
Keep the vehicle serviced
and in good shape.
Check all uid levels and brakes,
tires, cooling system, and
transmission.
Going down steep or long hills,
shift to a lower gear.
{CAUTION
If you do not shift down, the
brakes could get so hot that
they would not work well. You
would then have poor braking
or even none going down a hill.
You could crash. Shift down to
let the engine assist the brakes
on a steep downhill slope.
8-24 Driving and Operating
2008 - Pontiac G8 Owner Manual

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 your 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:Your 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 your
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 your 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.
8-34 Driving and Operating
2008 - Pontiac G8 Owner Manual

Vehicle Service
and Care
Service
Service...............................9-2
Accessories and
Modications.....................9-3
California Proposition 65
Warning............................9-3
California Perchlorate
Materials Requirements.....9-3
Doing Your Own
Service Work....................9-4
Adding Equipment to the
Outside of the Vehicle......9-4
Owner Checks
Owner Checks....................9-5
Hood Release.....................9-5
Engine Compartment
Overview...........................9-6
Engine Oil..........................9-8
Engine Oil Life System.....9-10
Engine Air Cleaner/Filter. . .9-11
Automatic Transmission
Fluid................................9-13
Engine Coolant.................9-13
Radiator Pressure Cap......9-15
Engine Overheating...........9-16
Cooling System.................9-17
Power Steering Fluid.........9-21
Windshield Washer Fluid. . .9-22
Windshield Wiper Blade
Replacement...................9-23
Brakes..............................9-24
Battery..............................9-26
Headlamp Aiming
Headlamp Aiming..............9-27
Bulb Replacement
Bulb Replacement.............9-29
Halogen Bulbs..................9-29
Headlamps and Parking
Lamps.............................9-29
Taillamps..........................9-31
Replacement Bulbs...........9-32
Electrical System
Add-On Electrical
Equipment.......................9-32
Headlamp Wiring..............9-33
Windshield Wiper Fuses. . . .9-33
Power Windows and
Other Power Options. . . . . . .9-33
Instrument Panel Fuse
Block...............................9-33
Engine Compartment
Fuse Block......................9-35
Rear Compartment Fuse
Block...............................9-38
Tires
Tires.................................9-39
Tire Sidewall Labeling. . . . . . .9-40
Tire Terminology and
Denitions.......................9-43
Ination - Tire Pressure. . . .9-46
High-Speed Operation. . . . . . .9-48
Tire Pressure Monitor
System............................9-49
Tire Pressure Monitor
Operation........................9-51
Tire Inspection and
Rotation..........................9-54
When It Is Time for
New Tires.......................9-56
Buying New Tires.............9-56
Different Size Tires and
Wheels............................9-58
Vehicle Service and Care 9-1
2008 - Pontiac G8 Owner Manual

Owner Checks
{CAUTION
An electric fan under the hood
can start up and injure you
even when the engine is not
running. Keep hands, clothing,
and tools away from any
underhood electric fan.
{CAUTION
Things that burn can get on hot
engine parts and start a re.
These include liquids like fuel,
oil, coolant, brake uid,
windshield washer and other
uids, and plastic or rubber.
You or others could be burned.
Be careful not to drop or spill
things that will burn onto a hot
engine.
Hood Release
To open the hood:
1. Pull the release handle with the
above symbol on it. It is located
below the instrument panel to
the left of the steering wheel.2. Pull up on the secondary hood
release. The lever is located
near the middle of the hood.
3. Lift the hood.
4. Release the hood prop rod from
its retainer and put it into the
slot in the hood. To insert
the hood prop rod into the slot.
Before closing the hood, be sure all
the ller caps are on properly.
Make sure to return the hood prop
rod carefully back to its retainer
to avoid damaging the vehicle.
Vehicle Service and Care 9-5
2008 - Pontiac G8 Owner Manual

Engine Compartment Overview
When you open the hood, this is what you will see:A. Engine Compartment Fuse
Block. See Engine Compartment
Fuse Block on page 9-35 .
B. Coolant Reservoir and Dipstick. See Cooling System on
page 9-17 .
C. Engine Oil Fill Cap. See “When to Add Engine Oil” under Engine
Oil on page 9-8 .
D. Engine Oil Dipstick (Out of View). See “Checking Engine Oil” under
Engine Oil on page 9-8 .
E. Brake Master Cylinder Reservoir. See “Brake Fluid” under Brakes
on page 9-24 .
F. Power Steering Reservoir. See Power Steering Fluid on
page 9-21 .
G. Engine Air Cleaner/Filter. See Engine Air Cleaner/Filter
on page 9-11 .
H. Windshield Washer Fluid Reservoir. See Windshield
Washer Fluid on page 9-22 .
I. Radiator Pressure Cap. See Cooling System on page 9-17 .
V6 Engine
9-6 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual

A. Engine Compartment FuseBlock. See Engine Compartment
Fuse Block on page 9-35 .
B. Coolant Reservoir and Dipstick. See Cooling System on
page 9-17 .
C. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil on page 9-8 .
D. Engine Oil Fill Cap. See “When to Add Oil” under Engine Oil on
page 9-8 .
E. Power Steering Reservoir. See Power Steering Fluid on
page 9-21 .
F. Brake Master Cylinder Reservoir. See “Brake Fluid” under Brakes
on page 9-24 .
G. Engine Air Cleaner/Filter. See Engine Air Cleaner/Filter on
page 9-11 .
H. Windshield Washer Fluid Reservoir. See Windshield
Washer Fluid on page 9-22 .
I. Radiator Pressure Cap. See Cooling System on page 9-17 .
V8 Engine
Vehicle Service and Care 9-7
2008 - Pontiac G8 Owner Manual

Engine Oil
Checking Engine Oil
It is a good idea to check the
engine oil every time you get fuel.
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 9-6
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 you do not
do this, the oil dipstick might not
show the actual level.
2. Pull 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.
When to Add Engine Oil
If the oil is below the MIN (minimum)
mark, add at least one quart/liter
of the recommended oil. This
section explains what kind of oil to
use. For engine oil crankcase
capacity, seeCapacities and
Specifications on page 10-2.
Notice:Do not add too much oil.
If the engine has so much oil
that the oil level gets above the
upper mark that shows the proper
operating range, the engine
could be damaged.SeeEngine Compartment Overview
on page 9-6for the location of
the engine oil ll cap.
Be sure to add enough oil to put the
level somewhere in the proper
operating range. Push the dipstick
all the way back in when you
are through.
9-8 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual