2008 PONTIAC G8 Owners Manual

Headlamp Wiring
The headlamp wiring is protected by
fuses in the fuse block. An
electrical overload will cause the
lamps to turn off. If this happens,
have your headlamp wiring checked
right away.
Windshield Wiper Fuses
The windshield wiper motor is
protected by a circuit breaker and a
fuse. If the motor overheats due
to heavy snow, etc., the wiper
will stop until the motor cools. If the
overload is caused by some
electrical problem, have it xed.
Power Windows and
Other Power Options
Circuit breakers in the fuse block
protect the power windows and
other power accessories. When the
current load is too heavy, the
circuit breaker opens and closes,
protecting the circuit until the
problem is xed or goes away.
Instrument Panel Fuse
Block
The instrument panel fuse block is
located on the end of the
instrument panel, on the driver’s
side of the vehicle. To access
the fuses, open the fuse panel door
by pulling out.
To reinstall the door, push the door
back into its original location.
Vehicle Service and Care 9-33
2008 - Pontiac G8 Owner Manual

Fuses UsageF1 Airbag
F2 Trunk Release
F3 Door Locks
F4 Inadvertent
Power LED
F5 Courtesy/Turn
Signal Lamps/Front
Passenger Turn
Signal
F6 Rear and Side
Passenger Side
Turn Signal
F7 Spare
F8 Driver Side Turn
Signal
F9 Body Control
Module
F10 Stoplamps
F11 Interior Lamps
F12 Discrete Logic
Ignition Sensor/Theft
Deterrent System
F13 Rear Cigarette
Lighter
F14 Auxiliary Power
Instrument Panel Fuse Block - Fuse Puller Shown
9-34 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual

Fuses Usage
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
your vehicle may damage it.
Always keep the covers on any
electrical component.
Vehicle Service and Care 9-35
2008 - Pontiac G8 Owner Manual

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
9-36 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual

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
F22Canister Vent
Solenoid
F23Driver Side
High-Beam
Headlamp
F24 SpareFuses Usage
F25 Reverse Lockout
F26 Spare
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
Fuses Usage
F43Driver Side
Park Lamp
FUSE
PULLERFuse Puller
Relays Usage
R1 Spare
R2 Comm Enable
R3 Spare
R4 Back-up Lamps
R5 Fog Lamp
R6Low-Beam
Headlamps
R7 Spare
R8 Defogger
R9Windshield
Wiper High
R10Windshield
Wiper Low
R11High-Beam
Headlamps
R12 Crank
R13 Powertrain
R14 Ignition Main
Vehicle Service and Care 9-37
2008 - Pontiac G8 Owner Manual

Relays Usage
R15 Windshield Wiper
R16 Horn
R17Fan 1 (Engine
Cooling)
R18 Parking Lamps
R19Fan 2 (Engine
Cooling)
R20Fan 3 (Engine
Cooling)
Rear Compartment Fuse
Block
The rear compartment fuse block is
located on the left side of the
trunk behind a cover.Use the fuse puller, to remove and
replace fuses.
Fuses Usage
F1 Spare
F2 Amplier
F3 XM Radio™
F4 Radio
F5Instrument/Display/
Remote Function
Actuator/Data Link
Connection
F6 Spare
F7 Spare
Fuses Usage
F8 OnStar™
F9 Spare
F10 ECM Battery
F11Regulated Voltage
Control Sensor
F12 Fuel Pump
Relays Usage
R1 Spare
R2 Spare
9-38 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual

Tires
Your new vehicle comes with
high-quality tires made by
a leading tire manufacturer.
If you ever have questions
about your tire warranty and
where to obtain service,
see your vehicle Warranty
booklet for details.
{CAUTION
Poorly maintained and
improperly used tires are
dangerous.
Overloading your vehicle’s
tires can cause
overheating as a result of
too much exing. You
could have an air-out and
a serious accident. See
Loading the Vehicle on
page 8-28.
Underinated tires pose
the same danger as
overloaded tires. The
resulting accident could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
(Continued)
CAUTION (Continued)
Tire pressure should be
checked when your
vehicle’s tires are cold.
SeeInflation - Tire
Pressure on page 9-46.
Overinated tires are more
likely to be cut, punctured,
or broken by a sudden
impact — such as when
you hit a pothole. Keep
tires at the recommended
pressure.
Worn, old tires can cause
accidents. If the tire’s
tread is badly worn, or
if your vehicle’s tires
have been damaged,
replace them.
Vehicle Service and Care 9-39
2008 - Pontiac G8 Owner Manual

Tire Sidewall Labeling
Useful information about a tire is
molded into its sidewall. The
examples show a typical
passenger vehicle tire and a
compact spare tire sidewall.(A) Tire Size
:The tire size is a
combination of letters and
numbers used to dene a
particular tire’s width, height,
aspect ratio, construction
type, and service description.
See the “Tire Size” illustration
later in this section for more
detail.
(B) TPC Spec (Tire
Performance Criteria
Specication)
:Original
equipment tires designed to
GM’s specic tire performance
criteria have a TPC specication
code molded onto the sidewall.
GM’s TPC specications
meet or exceed all federal safety
guidelines.(C) DOT (Department of
Transportation)
:The
Department of Transportation
(DOT) code indicates that
the tire is in compliance with
the U.S. Department of
Transportation Motor Vehicle
Safety Standards.
(D) Tire Identication Number
(TIN)
:The letters and numbers
following DOT (Department
of Transportation) code is the
Tire Identication Number (TIN).
The TIN shows the manufacturer
and plant code, tire size, and
date the tire was manufactured.
The TIN is molded onto both
sides of the tire, although
only one side may have the date
of manufacture.
Passenger (P-Metric) Tire
Example
9-40 Vehicle Service and Care
2008 - Pontiac G8 Owner Manual