engine overheat PONTIAC G8 2009 Owners Manual

If the light remains on after resetting
the system or comes on again
while driving, your vehicle needs
service. If the ABS light is on,
but the regular brake system
warning light is not on, the antilock
brakes are not working properly,
but the regular brakes are still
functioning. Have your vehicle
serviced right away. If both brake
lights are on, you do not have
antilock brakes, and there’s a
problem with your regular brakes as
well. Have your vehicle towed for
service. SeeTowing Your Vehicle
on page 9-88.
The ABS Fault message will remain
until
3(Trip/Fuel) or8(Enter)
are pressed, but the warning
light will remain until the problem is
xed. SeeDIC Warnings and
Messages on page 4-26for more
information.
Engine Coolant
Temperature Gage
This gage shows the engine coolant
temperature. If the gage pointer
moves into the red area, the engine
is too hot. It means that the engine
has overheated. Pull off the road,
stop the vehicle, and turn off the
engine as soon as possible. See
Engine Overheating on page 9-20.
Tire Pressure Light
TPMS Light
This light comes on briey when the
engine is started and provides
information about tire pressures and
the Tire Pressure Monitoring System.When the Light is On Steady
This light will also come on when
one or more of your tires are
signicantly underinated. A CHECK
TIRE PRESSURE DIC message
will accompany the light.
SeeDIC Warnings and Messages
on page 4-26for more information.
Stop and check your tires as soon
as it is safe to do so. If underinated,
inate to the proper pressure.
SeeTires on page 9-42for more
information.
When the Light Flashes First and
Then is On Steady
This indicates that there may be a
problem with the Tire Pressure
Monitor System.
The light ashes for about a minute
and stays on on steady for the
remainder of the ignition cycle.
This sequence will repeat with every
ignition cycle. SeeTire Pressure
Monitor System on page 9-52
andTire Pressure Monitor Operation
on page 9-54for more information.
Instruments and Controls 4-17

:Check Oil
This message is displayed if the oil
pressure or oil level is low. Stop
when safe, turn off the engine and
check the engine oil level. See
Engine Oil on page 9-8. Do not run
the engine when this warning is
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 willcontinue 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.
SeeCruise Control on page 4-5
for 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 9-20.
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.
4-28 Instruments and Controls

Starting the Engine
Place the transmission in the
proper gear.
Automatic Transmission
Move the shift lever to P (Park) or
N (Neutral). The engine will not start
in any other position. To restart
the vehicle when it is already
moving, use N (Neutral) only.
Notice:Do not try to shift to
P (Park) if the vehicle is moving.
If you do, you could damage
the transmission. Shift to P (Park)
only when the vehicle is stopped.
Manual Transmission
The shift lever should be in Neutral
and the parking brake engaged.
Hold the clutch pedal down to
the oor and start the engine. The
vehicle will not start if the clutch
pedal is not all the way down.Starting Procedure
1. With your foot off the accelerator
pedal, turn the ignition key to
START. When the engine starts,
let go of the key. The idle speed
will go down as the engine
warms. Do not race the engine
immediately after starting it.
Operate the engine and
transmission gently to allow the
oil to warm up and lubricate all
moving parts.
The vehicle has a
Computer-Controlled Cranking
System. This feature assists in
starting the engine and protects
components. If the ignition key is
turned to the START position,
and then released when the
engine begins cranking, the
engine will continue cranking for a
few seconds or until the vehicle
starts. If the engine does not start
and the key is held in START for
many seconds, cranking will be
stopped after 15 secondsto prevent cranking motor
damage. To prevent gear
damage, this system also
prevents cranking if the engine is
already running. Engine cranking
can be stopped by turning the
ignition switch to ACC/
ACCESSORY or LOCK/OFF.
Notice:Cranking the engine for
long periods of time, by returning
the key to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not start after
5-10 seconds, especially in
very cold weather (below 0°F
or−18°C), it could be ooded with
too much gasoline. Push the
accelerator pedal all the way to
the oor and holding it there as
you hold the key in START for
a maximum of 15 seconds.
8-4 Driving and Operating

Wait at least 15 seconds between
each try, to allow the cranking
motor to cool. When the engine
starts, let go of the key and
accelerator. If the vehicle starts
briey but then stops again,
repeat the procedure. This clears
the extra gasoline from the
engine. Do not race the engine
immediately after starting it.
Operate the engine and
transmission gently until the oil
warms up and lubricates all
moving parts.
Notice:The engine is designed
to work with the electronics
in the vehicle. If you add electrical
parts or accessories, you could
change the way the engine
operates. Before adding electrical
equipment, check with your
dealer/retailer. If you do not, the
engine might not perform
properly. Any resulting damage
would not be covered by the
vehicle warranty.Engine Coolant Heater
The engine coolant heater, if
available, can help in cold weather
conditions at or below 0°F (−18°C)
for easier starting and better fuel
economy during engine warm-up.
Plug in the coolant heater at least
four hours before starting your
vehicle. An internal thermostat in the
plug-end of the cord will prevent
engine coolant heater operation at
temperatures above 0°F (−18°C).
To Use The Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord.
The electrical cord is located on
the driver side of the engine
compartment, behind the
air cleaner for V8 models.
The electrical cord is located
on the passenger side of
the engine compartment, behind
the engine compartment fuse
block for V6 models.3. Plug it into a normal, grounded
110-volt AC outlet.
{CAUTION
Plugging the cord into an
ungrounded outlet could cause an
electrical shock. Also, the wrong
kind of extension cord could
overheat and cause a re. You
could be seriously injured. Plug
the cord into a properly grounded
three-prong 110-volt AC outlet.
If the cord will not reach, use a
heavy-duty three-prong extension
cord rated for at least 15 amps.
4. Before starting the engine, be
sure to unplug and store the
cord as it was before to keep
it away from moving engine
parts. If you do not it could be
damaged.
Driving and Operating 8-5

To release the parking brake:
1. Hold the brake pedal down.
2. Pull the parking brake handle up
until you can press the release
button.
3. Hold the release button in as you
move the brake handle all the
way down.
Notice:Driving with the parking
brake on can overheat the brake
system and cause premature wear
or damage to brake system parts.
Make sure that the parking brake
is fully released and the brake
warning light is off before driving.
Driving with the park brake applied
will cause a warning chime to
sound and the Park Brake message
to appear in the DIC. The message
will remain on until:
the park brake is released
the vehicle comes to a stop.
If you are towing a trailer and you
are parking on a hill, seeTowing a
Trailer on page 9-89.
Shifting Into Park
(Automatic
Transmission)
{CAUTION
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake rmly set. The vehicle can
roll. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow. If you are pulling a
trailer, seeTowing a Trailer on
page 9-89.Use this procedure to shift into
P (Park):
1. Hold the brake pedal down and
set the parking brake.
SeeParking Brake on page 8-11
for more information.
2. Move the shift lever into P (Park)
by holding in the button on the
shift lever and pushing the
lever all the way toward the front
of the vehicle.
3. Turn the ignition key to
LOCK/OFF.
4. Remove the key and take it with
you. If you can leave the vehicle
with the ignition key in your
hand, the vehicle is in P (Park).
8-12 Driving and Operating

Leaving Your Vehicle With the
Engine Running
{CAUTION
It can be dangerous to leave the
vehicle with the engine running.
The vehicle could move suddenly
if the shift lever is not fully in
P (Park) with the parking brake
rmly set. And, if you leave the
vehicle with the engine running, it
could overheat and even catch re.
You or others could be injured.
Do not leave the vehicle with the
engine running.
If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the parking
brake is rmly set before you leave it.
After you have moved the shift lever
into P (Park), hold the brake pedal
down. Then, see if you can move the
shift lever away from P (Park) without
rst pushing the button.If you can, it means that the
shift lever was not fully locked
into P (Park).
Torque Lock
If you are parking on a hill and
you do not shift the automatic
transmission into P (Park) properly,
the weight of the vehicle may put too
much force on the parking pawl in
the transmission. You may nd it
difficult to pull the shift lever out of
P (Park). This is called torque lock.
To prevent torque lock, set the
parking brake and then shift into
P (Park) properly before you leave
the driver seat. To nd out how, see
“Shifting Into Park” previously in the
section.
When you are ready to drive, move
the shift lever out of P (Park) before
you release the parking brake.
If torque lock does occur, you may
need to have another vehicle
push yours a little uphill to takesome of the pressure from the
parking pawl in the transmission,
so you can pull the shift lever out
of P (Park).Shifting Out of Park
To shift out of P (Park):
1. Apply the brake pedal.
2. Press the shift lever button.
3. Move the shift lever to the
desired position.
If you still are unable to shift out of
P (Park):
1. Fully release the shift lever
button.
2. Hold the brake pedal down and
press the shift lever button again.
3. Move the shift lever to the
desired position.
If you still cannot move the shift
lever from P (Park), seeShift Lock
Manual Release on page 9-88.
Driving and Operating 8-13

CAUTION (Continued)
Fully open the air outlets on
or under the instrument panel.
Adjust the Climate Control
system to a setting that
circulates the air inside the
vehicle and set the fan speed
to the highest setting. See
Climate Control System in the
Index.
For more information about carbon
monoxide, seeEngine Exhaust on
page 8-14.
Snow can trap exhaust gases
under your vehicle. This can cause
deadly CO (carbon monoxide) gas
to get inside. CO could overcome
you and kill you. You cannot see it
or smell it, so you might not know it
is in your vehicle. Clear away snow
from around the base of your
vehicle, especially any that is
blocking the exhaustRun the engine for short periods
only as needed to keep warm,
but be careful.
To save fuel, run the engine for only
short periods as needed to warm
the vehicle and then shut the engine
off and close the window most of
the way to save heat. Repeat
this until help arrives but only when
you feel really uncomfortable
from the cold. Moving about to keep
warm also helps.
If it takes some time for help to
arrive, now and then when you run
the engine, push the accelerator
pedal slightly so the engine
runs faster than the idle speed. This
keeps the battery charged to
restart the vehicle and to signal for
help with the headlamps. Do
this as little as possible to save fuel.
If Your Vehicle is Stuck
in Sand, Mud, Ice,
or Snow
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.
SeeRocking Your Vehicle to Get It
Out on page 8-30.
{CAUTION
If you let your vehicle’s tires spin
at high speed, they can explode,
and you or others could be
injured. The vehicle can overheat,
causing an engine compartment
re or other damage. Spin the
wheels as little as possible and
avoid going above 35 mph
(55 km/h) as shown on the
speedometer.
For information about using tire
chains on the vehicle, seeTire
Chains on page 9-65.
Driving and Operating 8-29

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
Cooling System.................9-13
Engine Coolant.................9-15
Pressure Cap....................9-19
Engine Overheating...........9-20
Power Steering Fluid.........9-21
Windshield Washer Fluid. . . .9-23
Windshield Wiper Blade
Replacement...................9-24
Brakes..............................9-25
Battery..............................9-28
Headlamp Aiming
Headlamp Aiming..............9-28
Bulb Replacement
Bulb Replacement.............9-31
Halogen Bulbs..................9-31
Headlamps and Parking
Lamps.............................9-31
Front Turn Signal Lamps. . .9-33
Taillamps..........................9-34
License Plate Lamp..........9-35
Replacement Bulbs...........9-35
Electrical System
Add-On Electrical
Equipment.......................9-36
Headlamp Wiring..............9-36
Windshield Wiper Fuses. . . .9-36
Power Windows and
Other Power Options.......9-36
Instrument Panel
Fuse Block......................9-36
Engine Compartment
Fuse Block......................9-38
Rear Compartment
Fuse Block......................9-41
Tires
Tires.................................9-42
Tire Sidewall Labeling.......9-42
Tire Terminology and
Denitions.......................9-46
Ination - Tire Pressure. . . .9-49
High-Speed Operation.......9-51
Tire Pressure Monitor
System............................9-52
Tire Pressure Monitor
Operation........................9-54
Tire Inspection and
Rotation..........................9-57
When It Is Time for
New Tires.......................9-59
Buying New Tires.............9-59
Different Size Tires
and Wheels.....................9-61
Vehicle Service and Care 9-1

{CAUTION
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is
a leak. If you run the engine, it
could lose all coolant. That could
cause an engine re, and you
could be burned. Get any leak
xed before you drive the vehicle.Notice:Using coolant other
than DEX-COOL
®can cause
premature engine, heater core, or
radiator corrosion. In addition,
the engine coolant could require
changing sooner, at 30,000 miles
(50 000 km) or 24 months,
whichever occurs rst. Any
repairs would not be covered by
the vehicle warranty. Always
use DEX-COOL
®(silicate-free)
coolant in the vehicle.
Engine Coolant
The cooling system in the vehicle is
lled with DEX-COOL®engine
coolant. This coolant is designed to
remain in the vehicle for ve years
or 150,000 miles (240 000 km),
whichever occurs rst.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
seeEngine Overheating on
page 9-20.
Vehicle Service and Care 9-15

What to Use
{CAUTION
Adding only plain water to the
cooling system can be dangerous.
Plain water, or some other liquid
such as alcohol, can boil before
the proper coolant mixture will.
The vehicle’s coolant warning
system is set for the proper
coolant mixture. With plain water
or the wrong mixture, the engine
could get too hot but you would
not get the overheat warning. The
engine could catch re and you or
others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL
®coolant.Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
Gives freezing protection down
to−34°F (−37°C), outside
temperature.
Gives boiling protection up to
265°F (129°C), engine
temperature.
Protects against rust and
corrosion.
Will not damage aluminum parts.
Helps keep the proper engine
temperature.Notice:If an improper coolant
mixture is used, the engine could
overheat and be badly damaged.
The repair cost would not be
covered by the vehicle warranty.
Too much water in the mixture
can freeze and crack the engine,
radiator, heater core, and
other parts.
Notice:If extra inhibitors and/or
additives are used in the vehicle’s
cooling system, the vehicle
could be damaged. Use only the
proper mixture of the engine
coolant listed in this manual
for the cooling system. See
Recommended Fluids and
Lubricants on page 11-12for
more information.
9-16 Vehicle Service and Care