engine PONTIAC G8 2008 Workshop Manual

Filling the Tank
{CAUTION
Fuel vapor burns violently and
a fuel re can cause bad
injuries. To help avoid injuries
to you and others, read and
follow all the instructions on
the pump island. Turn off your
engine when you are refueling.
Do not smoke if you are near
fuel or refueling your vehicle.
Do not use cellular phones.
Keep sparks, ames, and
smoking materials away from
fuel. Do not leave the fuel pump
unattended when refueling your
vehicle. This is against the law
in some places. Do not re-enter
the vehicle while pumping fuel.
Keep children away from the
fuel pump; never let children
pump fuel.The fuel cap is located behind a
hinged fuel door on the driver side
of the vehicle.
To open the fuel door the vehicle
must be unlocked. Push on the rear
edge of the door to open.
When reinstalling the cap, turn it
clockwise until it clicks, otherwise
the Malfunction Indicator Lamp may
turn on. SeeMalfunction Indicator
Lamp on page 4-18.
{CAUTION
Fuel can spray out on you if
you open the fuel cap too
quickly. If you spill fuel and
then something ignites it, you
could be badly burned. This
spray can happen if your tank
is nearly full, and is more likely
in hot weather. Open the fuel
cap slowly and wait for any
hiss noise to stop. Then
unscrew the cap all the way.
Be careful not to spill fuel. Do not
top off or overll the tank and
wait a few seconds after you have
nished pumping before removing
the nozzle. Clean fuel from painted
surfaces as soon as possible.
SeeExterior Cleaning on page 9-94.
When replacing the fuel cap,
turn it clockwise until it clicks.
Make sure the cap is fully installed.
Driving and Operating 8-35
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

Uniform Tire Quality
Grading...........................9-59
Wheel Alignment and Tire
Balance...........................9-60
Wheel Replacement..........9-61
Tire Chains.......................9-62
Tire Changing
If a Tire Goes Flat............9-62
Tire Sealant and
Compressor Kit
(V8 Engine)
.....................9-64
Changing a Flat Tire
(V6 Engine).....................9-71
Removing the Spare Tire
and Tools........................9-72
Removing the Flat Tire
and Installing the
Spare Tire
.......................9-73
Storing a Flat or Spare
Tire and Tools.................9-78
Compact Spare Tire..........9-79
Jump Starting
Jump Starting...................9-80
Towing
Towing Your Vehicle.........9-84
Shift Lock Manual
Release...........................9-84
Recreational Vehicle
Towing............................9-85
Towing a Trailer................9-85
Appearance Care
Interior Cleaning................9-91
Exterior Cleaning..............9-94
Sheet Metal Damage........9-98
Finish Damage..................9-98
Underbody Maintenance. . . .9-98
Chemical Paint Spotting. . . .9-98
Vehicle Care/Appearance
Materials.........................9-99
Service
For service and parts needs, visit
your dealer/retailer. You will receive
genuine GM parts and GM-trained
and supported service people.
Genuine GM parts have one
of these marks:
9-2 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual

Accessories and
Modications
When non-dealer/non-retailer
accessories are added to your
vehicle they can affect your vehicle’s
performance and safety, including
such things as, airbags, braking,
stability, ride and handling,
emissions systems, aerodynamics,
durability, and electronic systems
like antilock brakes, traction control
and stability control. Some of
these accessories could even cause
malfunction or damage not
covered by warranty.
GM Accessories are designed to
complement and function with other
systems on your vehicle. Your
GM dealer/retailer can accessorize
your vehicle using genuine GM
Accessories. When you go to yourGM dealer/retailer and ask for GM
Accessories, you will know that
GM-trained and supported service
technicians will perform the
work using genuine GM
Accessories.
Also, seeAdding Equipment to Your
Airbag-Equipped Vehicle on
page 1-30.
California Proposition 65
Warning
Most motor vehicles, including this
one, contain and/or emit chemicals
known to the State of California
to cause cancer and birth defects or
other reproductive harm. Engine
exhaust, many parts and systems
(including some inside the vehicle),
many uids, and some component
wear by-products contain and/or
emit these chemicals.
California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, seat belt pretensioners,
and lithium batteries contained
in remote keyless entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Vehicle Service and Care 9-3
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

What Kind of Engine Oil to UseLook for three things:
GM6094M
Your vehicle’s engine requires oil
meeting GM Standard
GM6094M. Look for and use
only an oil that meets GM
Standard GM6094M.
SAE 5W-30
As shown in the viscosity chart,
SAE 5W-30 is best for your
vehicle.
These numbers on an oil
container show its viscosity, or
thickness. Do not use other
viscosity oils such as
SAE 20W-50.
Oils meeting these requirements
should have the starburst
symbol on the container. This
symbol indicates that the oil has
been certied by the American
Petroleum Institute (API).Look for this information on the oil
container, and use only those
oils that are identied as meeting
GM Standard GM6094M and
have the starburst symbol on the
front of the oil container.
Notice:Use only engine oil
identied as meeting GM
Standard GM6094M and showing
the American Petroleum
Institute Certied For Gasoline
Engines starburst symbol. Failure
to use the recommended oil
can result in engine damage not
covered by your warranty.
Vehicle Service and Care 9-9
2008 - Pontiac G8 Owner Manual

If you are in an area of extreme
cold, where the temperature
falls below−20°F (−29°C), it is
recommended that you use either
an SAE 5W-30 synthetic oil or
an SAE 0W-30 oil. Both provide
easier cold starting and better
protection for the engine at
extremely low temperatures.
Engine Oil Additives
Do not add anything to the oil. The
recommended oils with the
starburst symbol that meet GM
Standard GM6094M are all
you need for good performance and
engine protection.
Engine Oil Life System
When to Change Engine Oil
Your vehicle has a computer system
that lets you know when to change
the engine oil and lter. This is based
on engine revolutions and engine
temperature, and not on mileage.
Based on driving conditions, themileage at which an oil change will
be indicated can vary considerably.
For the oil life system to work
properly, you must reset the system
every time the oil is changed.
When the system has calculated that
oil life has been diminished, it will
indicate that an oil change is
necessary. The Service Engine Oil
message will be displayed. Change
the oil as soon as possible within the
next 600 miles (1 000 km). It is
possible that, if you are driving under
the best conditions, the oil life system
might not indicate that an oil change
is necessary for over a year.
However, the engine oil and lter
must be changed at least once a
year and at this time the system must
be reset. Your dealer/retailer has
trained service people who will
perform this work using genuine
parts and reset the system. It is also
important to check the oil regularly
and keep it at the proper level.If the system is ever reset
accidentally, you must change the
oil at 3,000 miles (5 000 km)
since your last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
The Engine Oil Life System
calculates when to change the
engine oil and lter based on vehicle
use. Whenever the oil is changed,
reset the system so it can calculate
when the next oil change is
required. If a situation occurs where
you change the oil prior to the
Service Engine Oil message being
displayed, reset the system.
9-10 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual