2008 PONTIAC G8 engine coolant

Extending Engine Run Time
To extend the engine run time by
10 minutes, repeat Steps 1 and 2
while the engine is still running.
The engine run time can only be
extended if it is the rst remote start
since the vehicle has been driven.
Remote start can be extended
one time.
If the remote start procedure is used
again before the rst 10 minute
time frame has ended, the rst
10 minutes will immediately expire
and the second 10 minute time
frame will start.
For example, if the lock button and
then the remote start buttons
are pressed again after the vehicle
has been running for ve minutes,
10 minutes are added, allowing
the engine to run for a total of
15 minutes.
A maximum of two remote starts or
remote start attempts are allowed
between ignition cycles.After your vehicle’s engine has been
started two times using the remote
start button, the vehicle’s ignition
switch must be turned to ON/RUN
and then back to LOCK/OFF
using the key before the remote
start procedure can be used again.
Shutting the Engine Off After
a Remote Start
To manually shut off the engine
after a remote start, do any of the
following:
Press/until the parking lamps
turn off.
Turn on the hazard warning
ashers.
Insert the vehicle’s key into the
ignition switch and turn the
switch to ON/RUN and then back
to LOCK/OFF.Conditions in Which Remote Start
Will Not Work
The remote vehicle start feature will
not operate if any of the following
occur:
The vehicle’s key is in the
ignition.
The vehicle’s hood or doors are
not closed.
The hazard warning ashers
are on.
There is an emission control
system malfunction.
The engine coolant temperature
is too high.
The oil pressure is low.
Two remote vehicle starts have
already been used. The
maximum number of remote
starts or remote start attempts
between ignition cycles with
the key is two.
The vehicle is not in PARK (P).
Keys, Doors and Windows 2-7
2008 - Pontiac G8 Owner Manual

Instruments and
Controls
Instrument Panel
Overview
Instrument Panel
Overview...........................4-2
Hazard Warning
Flashers............................4-4
Horn...................................4-4
Tilt Wheel...........................4-4
Turn Signal/Multifunction
Lever................................4-4
Cruise Control....................4-5
Turn and Lane-Change
Signals.............................4-7
Headlamp High/
Low-Beam Changer..........4-7
Windshield Wipers..............4-8
Windshield Washer.............4-8
Accessory Power
Outlet(s)............................4-9
Warning Lights, Gages,
and Indicators
Warning Lights, Gages,
and Indicators.................4-10
Instrument Panel Cluster. . .4-11
Speedometer....................4-12
Tachometer.......................4-12
Safety Belt Reminders......4-12
Airbag Readiness Light.....4-13
Passenger Airbag Status
Indicator..........................4-14
Voltmeter Gage.................4-15
Charging System Light......4-15
Brake System Warning
Light................................4-16
Antilock Brake System
(ABS) Warning Light.......4-17
Engine Coolant
Temperature Gage..........4-17
Tire Pressure Light...........4-18
Malfunction
Indicator Lamp................4-18
Security Light....................4-21
Fog Lamp Light................4-21
Highbeam On Light...........4-21
Daytime Running Lamps
(DRL) Indicator Light. . . . . . .4-21
Door Ajar Light.................4-21
Oil Pressure Gage............4-22
Fuel Gage........................4-22
Driver Information
Center (DIC)
Driver Information
Center (DIC)...................4-23
DIC Operation and
Displays..........................4-23
DIC Warnings and
Messages........................4-27
DIC Vehicle
Customization..................4-32
OnStar®System
OnStar®System................4-36
Instruments and Controls 4-1
2008 - Pontiac G8 Owner Manual

Antilock Brake System
(ABS) Warning Light
For vehicles with the Antilock Brake
System (ABS), this light will come
on briey, as a check, when
you start your vehicle.
If it does not, have your vehicle
serviced so that the light works
properly when it needs to.
If the light and a message in the
DIC stays on longer than a few
seconds after you start your engine,
or comes on and stays on while
you are driving, try resetting
the system. To reset the system:
1. If you are driving, pull over when
it is safe to do so.
2. Place the vehicle in PARK (P).
3. Turn off the ignition.
4. Then restart the engine.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 9-84.
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 4-27for 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 9-16.
Instruments and Controls 4-17
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

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
Parking Brake.....................8-9
Shifting Into Park
(Automatic
Transmission)
..................8-10
Shifting Out of Park..........8-11
Parking Over Things
That Burn........................8-11
Engine Exhaust.................8-12
Running the Vehicle
While Parked..................8-12
Driving Your Vehicle
Defensive Driving..............8-13
Drunk Driving....................8-13
Control of a Vehicle..........8-14
Braking.............................8-14
Antilock Brake
System (ABS).................8-15
Electronic Stability
Program..........................8-16
Steering............................8-19
Off-Road Recovery............8-20
Passing.............................8-21
Loss of Control.................8-21
Driving at Night.................8-22
Driving in Rain and on
Wet Roads......................8-23
Before Leaving on a
Long Trip........................8-24
Highway Hypnosis.............8-24
Hill and Mountain Roads. . . .8-24
Winter Driving...................8-25
If Your Vehicle is Stuck
in Sand, Mud, Ice,
or Snow
..........................8-27
Rocking Your Vehicle to
Get It Out.......................8-28
Loading the Vehicle..........8-28
Fuel
Fuel..................................8-32
Gasoline Octane...............8-33
Gasoline Specications. . . . .8-33
California Fuel..................8-33
Additives...........................8-34
Fuels in Foreign
Countries........................8-34
Filling the Tank.................8-35
Filling a Portable Fuel
Container........................8-36
Driving and Operating 8-1
2008 - Pontiac G8 Owner Manual

When the engine starts, let go of
the key and accelerator. If the
vehicle starts briey but then
stops again, do the same thing.
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
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