engine PONTIAC G8 2009 Manual PDF

If no coolant is visible in the surge
tank, add coolant as follows:
1. Check the engine coolant
reservoir level and, if required,
top with coolant. SeeEngine
Coolant on page 9-15Engine
Coolant.
2. Locate the radiator cap.
3. Cover the cap with a thick
cloth and turn it slowly
counterclockwise and remove.4. If there is no coolant or the level is
low, slowly ll the system through
the radiator cap opening with a
50/50 mixture of clean, drinkable
water and a DEX-COOL
®coolant
until full. Wait 30 seconds for
coolant to settle and top off if the
level drops.
Do not spill coolant on the
accessory drive belts.
If a spill occurs, rinse the belt
with fresh water.
5. Start the engine.
6. With the engine idling, top off the
coolant through the radiator cap
opening until full.
Wait 30 seconds for the coolant
to settle and top off, if the
level drops.
7. Once the system is full, put the
radiator cap back on by turning
clockwise.8. Turn off the ignition.
9. Check the coolant level in the
reservoir and ll it until the
level is at the top of the dipstick.
Notice:If the pressure cap is
not tightly installed, coolant loss
and possible engine damage
may occur. Be sure the cap is
properly and tightly secured.
Pressure Cap
Notice:If the pressure cap is
not tightly installed, coolant loss
and possible engine damage
may occur. Be sure the cap is
properly and tightly secured.
SeeEngine Compartment Overview
on page 9-6for more information
on location.
Vehicle Service and Care 9-19

Engine Overheating
The vehicle has an indicator to
warn of engine overheating.
There is an engine coolant
temperature warning light on
your vehicle’s instrument panel.
SeeEngine Coolant Temperature
Gage on page 4-17.
You may decide not to lift the hood
when this warning appears, but
instead get service help right away.
SeeRoadside Assistance Program
on page 12-6.
If you do decide to lift the hood,
make sure the vehicle is parked on
a level surface.Then check to see if the engine
cooling fans are running. If the
engine is overheating, both fans
should be running. If they are
not, do not continue to run the
engine and have the vehicle
serviced.
Notice:Engine damage from
running the engine without
coolant is not covered by the
warranty.
Notice:If the engine catches re
because of being driven with
no coolant, your vehicle can be
badly damaged. The costly
repairs would not be covered by
the vehicle warranty.
If Steam Is Coming From The
Engine Compartment
{CAUTION
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you
open the hood.
If you keep driving when your
engine is overheated, the liquids
in it can catch re. You or others
could be badly burned. Stop your
engine if it overheats, and get out
of the vehicle until the engine
is cool.
9-20 Vehicle Service and Care

If No Steam Is Coming From
The Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be too
serious. Sometimes the engine can
get a little too hot when the vehicle:
Climbs a long hill on a hot day.
Stops after high-speed driving.
Idles for long periods in traffic.
Tows a trailer.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air off.
2. Turn the heater on to the highest
temperature and to the highest
fan speed. Open the windows as
necessary.
3. In heavy traffic, let the engine idle
in N (Neutral) while stopped. If it
is safe to do so, pull off the road,
shift to P (Park) or N (Neutral) and
let the engine idle.If the temperature overheat gage is
no longer in the overheat zone
or an overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle
slow for about 10 minutes. Keep a
safe vehicle distance from the
car in front of you. If the warning
does not come back on, continue to
drive normally.
If the warning continues, pull over,
stop, and park the vehicle right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see ‘‘Overheated
Engine Protection Operating Mode’’
later in this section.
Power Steering Fluid
Power Steering Fluid Level
Power steering uid is used in
all vehicles.
Check the level after the vehicle has
been driven for at least twenty
minutes so the uid is warm.
How to Check Power Steering
Fluid
To check the power steering uid,
do the following:
1. Turn the key off and let the engine
compartment cool down.
2. The power steering uid reservoir
is located on the driver side
toward the front of the engine
compartment. SeeEngine
Compartment Overview on
page 9-6.
Vehicle Service and Care 9-21

3. Wipe the cap and the top of the
reservoir clean.
4. Turn the cap counterclockwise
and pull it straight up.
5. When the engine is hot, the level
should be at the hot MAX level.
When the engine is cold, the
uid level should be between
MIN and MAX on the dipstick.
6. Replace the cap.
Adding Power Steering Fluid
To determine what kind of uid
to use, seeRecommended Fluids
and Lubricants on page 11-12.
Always use the proper uid. Failure
to use the proper uid can cause
leaks and damage hoses and seals.
1. Turn the ignition to LOCK/OFF.
2. Top off with power steering
uid. Do not overll the reservoir.
3. Push the cap straight down
and turn clockwise to tighten.
V6 Engine
V8 Engine
9-22 Vehicle Service and Care

Windshield Washer Fluid
What to Use
When you need windshield washer
uid, be sure to read the
manufacturer’s instructions before
use. If you will be operating
your vehicle in an area where the
temperature may fall below freezing,
use a uid that has sufficient
protection against freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer uid
until the tank is full. SeeEngine
Compartment Overview on page 9-6
for reservoir location.Notice:
When using concentrated
washer uid, follow the
manufacturer’s instructions
for adding water.
Do not mix water with
ready-to-use washer uid.
Water can cause the solution
to freeze and damage your
washer uid tank and other
parts of the washer system.
Also, water does not clean as
well as washer uid.
Fill the washer uid tank only
three-quarters full when it is
very cold. This allows for uid
expansion if freezing occurs,
which could damage the tank if
it is completely full.
Do not use engine coolant
(antifreeze) in your windshield
washer. It can damage the
vehicle’s windshield washer
system and paint.
Vehicle Service and Care 9-23

Brakes
Brake Fluid
The brake master cylinder reservoir
is lled with DOT-4 brake uid.
There are only two reasons why the
brake uid level in the reservoir
might go down:
The brake uid level goes down
because of normal brake lining
wear. When new linings are
installed, the uid level goes
back up.
A uid leak in the brake hydraulic
system can also cause a low uid
level. Have the brake hydraulic
system xed, since a leak means
that sooner or later the brakes will
not work well.
Do not top off the brake uid.
Adding uid does not correct a leak.
If uid is added when the linings
are worn, there will be too much
uid when new brake linings
are installed. Add or remove brake
uid, as necessary, only when
work is done on the brake hydraulic
system.{CAUTION
If too much brake uid is added,
it can spill on the engine and
burn, if the engine is hot enough.
You or others could be burned,
and the vehicle could be
damaged. Add brake uid only
when work is done on the brake
hydraulic system.
When the brake uid falls to a low
level, the brake warning light comes
on. SeeBrake System Warning
Light on page 4-15.
Vehicle Service and Care 9-25

What to Add
Use only new DOT-4 brake uid
from a sealed container. It is
recommended that the brake
hydraulic system be ushed and
relled with new DOT-4 uid
at a regular maintenance service
every two years. SeeAdditional
Required Services on page 11-6
andRecommended Fluids and
Lubricants on page 11-12.
Always clean the brake uid reservoir
cap and the area around the cap
before removing it. This helps keep
dirt from entering the reservoir.
{CAUTION
With the wrong kind of uid in
the brake hydraulic system,
the brakes might not work well.
This could cause a crash.
Always use the proper brake uid.Notice:
Using the wrong uid can badly
damage brake hydraulic system
parts. For example, just a few
drops of mineral-based oil,
such as engine oil, in the brake
hydraulic system can damage
brake hydraulic system parts so
badly that they will have to be
replaced. Do not let someone
put in the wrong kind of uid.
If brake uid is spilled on the
vehicle’s painted surfaces, the
paint nish can be damaged.
Be careful not to spill brake
uid on the vehicle. If you do,
wash it off immediately. See
Exterior Cleaning on page 9-98.
Brake Wear
This vehicle has disc brakes.
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake
pads are worn and new pads are
needed. The sound can come
and go or be heard all the time the
vehicle is moving, except when
applying the brake pedal rmly.
{CAUTION
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
an accident. When the brake wear
warning sound is heard, have the
vehicle serviced.
9-26 Vehicle Service and Care

Fuses Usage
F14 Auxiliary Power
F15Outside Rearview
Mirrors
F16Sunroof/Automatic
Transmission
Shift Lock
F17 Sunroof
F18Automatic Occupant
Sensor
F19Driver Side Heated
Seat
F20Passenger Side
Heated Seat
F21Daytime Running
Lamps
F22Front Cigarette
Lighter
F23Steering Wheel
Controls Backlighting
F24 Power Window
FUSE
PULLERFuse PullerCircuit
BreakersUsage
B1 Spare
B2 Power Windows
B3 Power Seats
B4 Spare
Relays Usage
R1Retain Accessory
Power 1
R2 Door Locks
R3Passenger Side
Door Lock
R4 Spare
R5 Trunk Release
R6 Driver Side Lock
R7Retain Accessory
Power 2
R8 Accessory
R9 Blower
R10 Spare
R11Daytime Running
Lamps
R12 Fuel Pump
Engine Compartment
Fuse Block
To open the fuse block cover,
remove the clip on cover.
Notice:Spilling liquid on any
electrical components on
the vehicle may damage it.
Always keep the covers on any
electrical component.
9-38 Vehicle Service and Care

Fuses UsageFL1 Spare
FL2 Rear Defog
FL3 ABS Motor
FL4 Battery Main 3
FL5 Battery Main 1
FL6 Spare
FL7 Battery Main 2
FL8 Starter
FL9 HVAC Blower Motor
FL10 Fan 1 Engine
Cooling (Right)
FL11 Spare
FL12 Fan 2 Engine
Cooling (Left)
F1 Comm Enable
F2 HVAC Battery
F3 Back-up Lamp
F4 Fog Lamps (Front)
F5 ABS Valves
F6 Spare
F8 Horn
F9 Transmission
Control Module
Engine Compartment Fuse Block - Fuse Puller Shown
Vehicle Service and Care 9-39

Fuses Usage
F10Driver Side Low-Beam
Headlamp
F11 Spare
F12Passenger Side
Low-Beam Headlamp
F13 Spare
F14 Spare
F15 Front Wiper
F16 Spare
F17 Theft Horn
F18 Spare
F19Passenger Side
High-Beam Headlamp
F20 Spare
F21 Windshield Washer
F22 Canister Vent Solenoid
F23Driver Side High-Beam
Headlamp
F24 Spare
F25 Reverse Lockout
F26 SpareFuses Usage
F27 Spare
F28Engine Control
Module 1
F29 Even Coils/Injectors
F30 Spare
F31 Spare
F32 Emission 2
F33 Emission 1
F34 Spare
F35 Odd Coils/Injectors
F36 Spare
F37 HVAC Ignition
F38Heated Seats/
OnStar
®Ignition
F39 Engine Ignition
F40 Airbags
F41 Spare
F42Passenger Side
Park Lamp
F43 Driver Side Park Lamp
FUSE
PULLERFuse Puller
Relays Usage
R1 Spare
R2 Comm Enable
R3 Spare
R4 Back-up Lamps
R5 Fog Lamp
R6 Low-Beam Headlamps
R7 Spare
R8 Defogger
R9 Windshield Wiper High
R10 Windshield Wiper Low
R11High-Beam
Headlamps
R12 Crank
R13 Powertrain
R14 Ignition Main
R15 Windshield Wiper
R16 Horn
R17 Fan 1 (Engine Cooling)
R18 Parking Lamps
R19 Fan 2 (Engine Cooling)
R20 Fan 3 (Engine Cooling)
9-40 Vehicle Service and Care