2007 PONTIAC G5 fuel cap

If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully
install the cap. SeeFilling the Tank on page 274.
The diagnostic system can determine if the fuel cap
has been left off or improperly installed. A loose or
missing fuel cap will allow fuel to evaporate into
the atmosphere. A few driving trips with the cap
properly installed should turn the light off.
Did you just drive through a deep puddle of
water?
If so, your electrical system may be wet. The
condition will usually be corrected when the
electrical system dries out. A few driving trips
should turn the light off.Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 270. Poor fuel
quality will cause your engine not to run as
efficiently as designed. You may notice this
as stalling after start-up, stalling when you put
the vehicle into gear, misring, hesitation on
acceleration, or stumbling on acceleration.
(These conditions may go away once the engine is
warmed up.) This will be detected by the system
and cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.
If none of the above steps have made the light
turn off, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.
170

Highbeam On Light
This light comes on
when the high-beam
headlamps are in use.
SeeHeadlamp High/Low-Beam Changer on
page 140.
Fuel Gage
Your fuel gage tells you
about how much fuel
you have left.Here are four things that some owners ask about.
None of these show a problem with your fuel gage:
At the service station, the gas pump shuts off
before the gage reads full.
It takes a little more or less fuel to ll up than
the gage indicated. For example, the gage may
have indicated the tank was half full, but it
actually took a little more or less than half the
tank’s capacity to ll the tank.
The gage moves a little when you turn a corner
or speed up.
The gage doesn’t go back to empty when you
turn off the ignition.
For your fuel tank capacity, seeCapacities and
Specications on page 369.
173

DIC Warnings and Messages
These messages appear if there is a problem
detected in one of your vehicle’s systems.
A message will clear when the vehicle’s condition
is no longer present. To acknowledge a message
and clear it from the display, press and hold
any of the DIC buttons. If the condition is still
present, the warning message will come back on
the next time the vehicle is turned off and back
on. With most messages, a warning chime sounds
when the message displays. Your vehicle may
have other warning messages.
AUTO (Automatic) LIGHTS OFF
This message displays if the automatic headlamp
system is disabled with the headlamp switch.
AUTO (Automatic) LIGHTS ON
This message displays if the automatic headlamp
system is enabled with the headlamp switch.
BRAKE FLUID
This message displays to inform the driver that the
brake uid level is low while the ignition is on.
The brake system warning light on the instrument
panel cluster also comes on. SeeBrake System
Warning Light on page 165for more information.
Have the brake system serviced by your dealer
as soon as possible.
CHANGE OIL SOON
This message displays when the life of the engine
oil has expired and it should be changed.
When you acknowledge the CHANGE OIL SOON
message by clearing it from the display, you still
must reset the engine oil life system separately.
SeeEngine Oil Life System on page 282and
Scheduled Maintenance on page 375for more
information.
CHECK GAS CAP
This message displays if the fuel cap has not been
fully tightened. Recheck the fuel cap to make sure
that it is on properly. A few driving trips with the cap
properly installed should turn the message off.
177

LOW FUEL
This message displays when your vehicle is low
on fuel. Rell the fuel tank as soon as possible.
SeeFuel Gage on page 173,Fuel on page 270,
andFilling the Tank on page 274for more
information.
LOW TRACTION
This message displays when the Enhanced
Traction System (ETS) is actively limiting wheel
spin. Slippery road conditions may exist if this
message displays, so adjust your driving
accordingly. SeeEnhanced Traction System (ETS)
on page 226for more information.
PARKING BRAKE
This message displays if the parking brake is left
engaged. SeeParking Brake on page 118for
more information.
POWER STEERING
This message displays if a problem has been
detected with the electric power steering. Have
your vehicle serviced by your dealer immediately.
SERVICE AIR BAG
This message displays when there is a problem
with the airbag system. Have your vehicle serviced
by your dealer immediately.
TRUNK AJAR
This message displays when the trunk lid is not
closed completely. Make sure that the trunk
lid is closed completely. SeeTrunk on page 98.
DIC Vehicle Personalization
Your vehicle has personalization capabilities that
allow you to program certain features to a preferred
setting. All of the features listed may not be
available on your vehicle. Only the features
available will be displayed on the DIC.
The default settings for the features were set
when your vehicle left the factory, but may have
been changed from their default state since
that time.
179

Item Description Total
AVehicle Capacity
Weight for Example 3=1,000 lbs (453 kg)
BSubtract
Occupant Weight
200 lbs (91 kg)×5=1,000 lbs (453 kg)
CAvailable Cargo
Weight=0 lbs (0 kg)
Refer to your vehicle’s Tire and Loading
Information label for specic information about
your vehicle’s capacity weight and seating
positions. The combined weight of the driver,
passengers, and cargo should never exceed your
vehicle’s capacity weight.
Certication Label
A vehicle specic Certication label, found on
the rear edge of the driver’s door, tells you
the gross weight capacity of your vehicle, called
the Gross Vehicle Weight Rating (GVWR).
The GVWR includes the weight of the vehicle, all
occupants, fuel, and cargo. Never exceed the
GVWR for your vehicle, or the Gross Axle Weight
Rating (GAWR) for either the front or rear axle.
And, if you do have a heavy load, you should
spread it out. See “Steps for Determining Correct
Load Limit” earlier in this section.
Example 3
252

Towing a Trailer
(Automatic Transaxle)
{CAUTION:
If you do not use the correct equipment
and drive properly, you can lose control
when you pull a trailer. For example, if the
trailer is too heavy, the brakes may not
work well — or even at all. You and your
passengers could be seriously injured.
You may also damage your vehicle; the
resulting repairs would not be covered by
your warranty. Pull a trailer only if you have
followed all the steps in this section. Ask
your dealer for advice and information
about towing a trailer with your vehicle.Your vehicle can tow a trailer if it is equipped with
an automatic transaxle and the proper trailer towing
equipment. If your vehicle is not equipped as stated
previously, do not tow a trailer. To identify the
trailering capacity of your vehicle, you should read
the information in “Weight of the Trailer” that
appears later in this section. Trailering is different
than just driving your vehicle by itself. Trailering
means changes in handling, acceleration, braking,
durability and fuel economy. Successful, safe
trailering takes correct equipment, and it has to be
used properly.
That is the reason for this part. In it are many
time-tested, important trailering tips and safety
rules. Many of these are important for your safety
and that of your passengers. So please read
this section carefully before you pull a trailer.
Load-pulling components such as the engine,
transaxle, wheel assemblies and tires are forced
to work harder against the drag of the added
weight. The engine is required to operate
at relatively higher speeds and under greater
loads, generating extra heat. Also, the trailer adds
considerably to wind resistance, increasing the
pulling requirements.
257

Service........................................................ 268
Accessories and Modications................... 268
California Proposition 65 Warning.............. 269
Doing Your Own Service Work.................. 269
Adding Equipment to the Outside of
Your Vehicle.......................................... 270
Fuel............................................................. 270
Gasoline Octane........................................ 270
Gasoline Specications.............................. 271
California Fuel........................................... 271
Additives................................................... 272
Fuels in Foreign Countries........................ 273
Filling the Tank......................................... 274
Filling a Portable Fuel Container............... 276
Checking Things Under the Hood.............. 276
Hood Release........................................... 277
Engine Compartment Overview.................. 278
Engine Oil................................................. 279
Engine Oil Life System.............................. 282
Engine Air Cleaner/Filter............................ 284
Automatic Transaxle Fluid......................... 286
Manual Transaxle Fluid............................. 286
Hydraulic Clutch........................................ 286Engine Coolant.......................................... 287
Coolant Surge Tank Pressure Cap............ 290
Engine Overheating................................... 290
Cooling System......................................... 292
Windshield Washer Fluid........................... 297
Brakes...................................................... 298
Battery...................................................... 303
Jump Starting............................................ 304
Headlamp Aiming........................................ 309
Bulb Replacement....................................... 312
Halogen Bulbs........................................... 312
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps............. 313
Center High-Mounted Stoplamp
(CHMSL)................................................ 315
Taillamps and Turn Signal Lamps
(Coupe)................................................. 316
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps (Sedan)......................... 316
Back-Up Lamps (Coupe)........................... 317
License Plate Lamp................................... 318
Replacement Bulbs................................... 318
Section 5 Service and Appearance Care
265

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. 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. Keep children away from the fuel
pump; never let children pump fuel.The tethered fuel cap is located behind a hinged
fuel door on the passenger’s side of the vehicle.
To remove the fuel cap, turn it slowly
counterclockwise. The fuel cap has a spring in it;
if the cap is released too soon, it will spring
back to the right.
274