2009 BUICK ENCLAVE fuel

A.Vehicle Capacity Weight for
Example 3=1,000 lbs
(453 kg).
B.Subtract Occupant Weight
200 lbs (91 kg)×5=1,000 lbs
(453 kg).
C.Available 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. Thecombined weight of the driver,
passengers, and cargo
should never exceed your
vehicle’s capacity weight.
Certication/Tire Label
A vehicle specic Certication/
Tire label is attached to the
rear edge of the driver’s door.The label shows the gross
weight capacity of your vehicle.
This is called the Gross
Vehicle Weight Rating (GVWR).
The GVWR includes the
weight of the vehicle, all
occupants, fuel, and cargo.
The Certication/Tire label also
tells you the maximum
weights for the front and rear
axles, called the Gross Axle
Weight Rating (GAWR). To nd
out the actual loads on your
front and rear axles, you need to
go to a weigh station and
weigh your vehicle. Your
dealer/retailer can help you with
this. Be sure to spread out
your load equally on both sides
of the centerline. Example 3
Label Example
Driving Your Vehicle 4-19

For vehicles being dinghy towed,
the vehicle should be run at
the beginning of each day and at
each RV fuel stop for about
ve minutes. This will ensure proper
lubrication of transmission
components. Re-install the fuse to
start the vehicle.
To tow the vehicle from the front
with all four wheels on the ground:
1. Position the vehicle to tow and
then secure it to the towing
vehicle.
2. Shift the transmission to P (Park)
and turn the ignition to
LOCK/OFF.
3. Set the parking brake.
4. Turn the ignition to
ACC/ACCESSORY.
5. Shift the transmission to
N (Neutral).6. To prevent the battery from
draining while the vehicle is being
towed, remove the 50 amp
BATT1 fuse from the underhood
fuse block and store in a safe
location. SeeUnderhood
Fuse Block on page 5-94.
7. Release the parking brake.
Notice:If the vehicle is towed
without performing each of
the steps listed under “Dinghy
Towing,” the automatic
transmission could be damaged.
Be sure to follow all steps of
the dinghy towing procedure prior
to and after towing the vehicle.
Notice:If 65 mph (105 km/h)
is exceeded while towing
the vehicle, it could be damaged.
Never exceed 65 mph (105 km/h)
while towing the vehicle.Once the destination is reached:
1. Set the parking brake.
2. Reinstall the 50 amp BATT1 fuse
to the underhood fuse block.
3. Shift the transmission to P (Park),
turn the ignition to LOCK/OFF
and remove the key from
the ignition.
4. Disconnect the vehicle from the
towing vehicle.
Notice:Do not tow a vehicle
with the front drive wheels on the
ground if one of the front tires
is a compact spare tire. Towing
with two different tire sizes on the
front of the vehicle can cause
severe damage to the
transmission.
4-22 Driving Your Vehicle

To identify the trailering capacity of
the vehicle, read the information
in “Weight of the Trailer” that
appears later in this section.
Trailering is different than just driving
the 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.
The following information has many
time-tested, important trailering
tips and safety rules. Many of these
are important for the safety of the
driver and the passengers. So
please read this section carefully
before pulling a trailer.Load-pulling components such
as the engine, transmission, rear
axle, 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. What’s more, the trailer
adds considerably to wind
resistance, increasing the pulling
requirements.Pulling A Trailer
Here are some important points:
There are many different
laws, including speed limit
restrictions, having to do with
trailering. Make sure the rig will
be legal, not only where you
live but also where you will be
driving. A good source for
this information can be state or
provincial police.
Consider using a sway control.
See “Hitches” later in this
section.
Do not tow a trailer at all during
the rst 500 miles (800 km) the
new vehicle is driven. The engine,
axle or other parts could be
damaged.
Driving Your Vehicle 4-25

Tow/Haul Mode
Tow/Haul is a feature that assists
when pulling a heavy trailer or
a large or heavy load. The purpose
of the Tow/Haul mode is to:
Reduce the frequency and
improve the predictability of
transmission shifts when pulling
a heavy trailer or a large or
heavy load.
Provide the same solid shift feel
when pulling a heavy trailer or a
large or heavy load as when
the vehicle is unloaded.
Improve control of vehicle speed
while requiring less throttle pedal
activity when pulling a heavy
trailer or a large or heavy load.
Increase the charging system
voltage to assist in recharging
a battery installed in a trailer.Press this button located on the
console to turn on and turn off the
Tow/Haul mode.
The Tow/Haul light on the
instrument panel will come on to
indicate that Tow/Haul mode
has been selected.
Tow/Haul may be turned off by
pressing the button again, at which
time the indicator light on the
instrument panel will turn off. The
vehicle will automatically turn
off Tow/Haul every time it is started.
Tow/Haul is designed to be most
effective when the vehicle and
trailer combined weight is at least
75 percent of the vehicle’s Gross
Combined Weight Rating (GCWR).
See Weight of the Trailer later in thissection. Tow/Haul is most useful
under the following driving
conditions:
When pulling a heavy trailer or a
large or heavy load through rolling
terrain.
When pulling a heavy trailer or a
large or heavy load in stop and go
traffic.
When pulling a heavy trailer or
a large or heavy load in busy
parking lots where improved low
speed control of the vehicle is
desired.
Operating the vehicle in Tow/Haul
when lightly loaded or with no trailer
at all will not cause damage.
However, there is no benet to the
selection of Tow/Haul when the
vehicle is unloaded. Such a selection
when unloaded may result in
unpleasant engine and transmission
driving characteristics and reduced
fuel economy. Tow/Haul is
recommended only when pulling a
heavy trailer or a large or heavy load.
4-32 Driving Your Vehicle

Service and
Appearance Care
Service
Service...............................5-3
Accessories and
Modications.....................5-3
California Proposition 65
Warning............................5-3
California Perchlorate
Materials Requirements.....5-4
Doing Your Own
Service Work....................5-4
Adding Equipment to the
Outside of the Vehicle......5-4
Fuel
Fuel....................................5-5
Gasoline Octane.................5-5
Gasoline Specications.......5-5
California Fuel....................5-5
Additives.............................5-5
Fuels in Foreign
Countries..........................5-6
Filling the Tank...................5-7
Filling a Portable Fuel
Container..........................5-8
Checking Things Under
the Hood
Checking Things Under
the Hood..........................5-9
Hood Release.....................5-9
Engine Compartment
Overview.........................5-10
Engine Oil.........................5-11
Engine Oil Life System.....5-13
Engine Air Cleaner/Filter. . . .5-14
Automatic Transmission
Fluid................................5-15
Cooling System.................5-16
Engine Coolant.................5-17
Engine Overheating...........5-20
Overheated Engine
Protection
Operating Mode
..............5-22
Power Steering Fluid.........5-22
Windshield Washer
Fluid................................5-23
Brakes..............................5-24
Battery..............................5-27
Jump Starting...................5-28
All-Wheel Drive
All-Wheel Drive.................5-32
Headlamp Aiming
Headlamp Aiming..............5-33
Bulb Replacement
Bulb Replacement.............5-33
High Intensity Discharge
(HID) Lighting..................5-33
Halogen Bulbs..................5-34
Taillamps, Turn Signal,
Stoplamps and
Sidemarker Lamps
..........5-34
License Plate Lamp..........5-35
Replacement Bulbs...........5-35
Windshield Replacement
Windshield
Replacement...................5-35
Windshield Wiper Blade
Replacement
Windshield Wiper Blade
Replacement...................5-36
Tires
Tires.................................5-36
Tire Sidewall Labeling.......5-37
Service and Appearance Care 5-1

California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, seat belt pretensioners,
and lithium batteries contained
in remote keyless transmitters, may
contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Doing Your Own
Service Work
{CAUTION
You can be injured and the
vehicle could be damaged if you
try to do service work on a vehicle
without knowing enough about it.
Be sure you have sufficient
knowledge, experience, the
proper replacement parts, and
tools before attempting any
vehicle maintenance task.
Be sure to use the proper
nuts, bolts, and other
fasteners. English and metric
fasteners can be easily
confused. If the wrong
fasteners are used, parts can
later break or fall off. You
could be hurt.
If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehiclethan this manual can. To order the
proper service manual, see
Service Publications Ordering
Information on page 7-13.
This vehicle has an airbag system.
Before attempting to do your
own service work, seeServicing
Your Airbag-Equipped Vehicle
on page 1-56.
Keep a record with all parts receipts
and list the mileage and the date
of any service work performed. See
Maintenance Record on page 6-16.Adding Equipment to
the Outside of the
Vehicle
Things added to the outside of the
vehicle can affect the airow
around it. This can cause wind
noise and can affect fuel economy
and windshield washer performance.
Check with your dealer/retailer
before adding equipment to
the outside of the vehicle.
5-4 Service and Appearance Care

Fuel
Use of the recommended fuel is
an important part of the proper
maintenance of this vehicle. To help
keep the engine clean and maintain
optimum vehicle performance, we
recommend the use of gasoline
advertised as TOP TIER Detergent
Gasoline.
Gasoline Octane
Use regular unleaded gasoline with
a posted octane rating of 87 or
higher. If the octane rating is less
than 87, you might notice an audible
knocking noise when you drive,
commonly referred to as spark
knock. If this occurs, use a gasoline
rated at 87 octane or higher as
soon as possible. If you are using
gasoline rated at 87 octane or higher
and you hear heavy knocking, the
engine needs service.
Gasoline Specications
At a minimum, gasoline should
meet ASTM specication D 4814
in the United States or CAN/
CGSB-3.5 or 3.511 in Canada.
Some gasolines contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend
against the use of gasolines
containing MMT. SeeAdditives on
page 5-5for additional information.
California Fuel
If the vehicle is certied to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specications. See
the underhood emission control
label. If this fuel is not available in
states adopting California emissions
standards, the vehicle will operate
satisfactorily on fuels meeting federal
specications, but emission control
system performance might be
affected. The malfunction indicator
lamp could turn on and the vehiclemight fail a smog-check test. See
Malfunction Indicator Lamp on
page 3-36. If this occurs, return to
your authorized dealer/retailer for
diagnosis. If it is determined that the
condition is caused by the type of
fuel used, repairs might not be
covered by the vehicle warranty.
Additives
To provide cleaner air, all gasolines
in the United States are now
required to contain additives that
help prevent engine and fuel system
deposits from forming, allowing
the emission control system to work
properly. In most cases, you
should not have to add anything to
the fuel. However, some gasolines
contain only the minimum amount of
additive required to meet U.S.
Environmental Protection Agency
regulations. To help keep fuel
injectors and intake valves clean, or
if the vehicle experiences problems
due to dirty injectors or valves,
look for gasoline that is advertised
as TOP TIER Detergent Gasoline.
Service and Appearance Care 5-5

Also, your dealer/retailer has
additives that will help correct and
prevent most deposit-related
problems.
Gasolines containing oxygenates,
such as ethers and ethanol,
and reformulated gasolines might
be available in your area. We
recommend that you use these
gasolines, if they comply with
the specications described earlier.
However, E85 (85% ethanol)
and other fuels containing more
than 10% ethanol must not be used
in vehicles that were not designed
for those fuels.
Notice:This vehicle was not
designed for fuel that contains
methanol. Do not use fuel
containing methanol. It can
corrode metal parts in the fuel
system and also damage plastic
and rubber parts. That damage
would not be covered under
the vehicle warranty.Some gasolines that are not
reformulated for low emissions
can contain an octane-enhancing
additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the
attendant where you buy gasoline
whether the fuel contains MMT. We
recommend against the use of
such gasolines. Fuels containing
MMT can reduce the life of
spark plugs and the performance of
the emission control system
could be affected. The malfunction
indicator lamp might turn on. If
this occurs, return to your
dealer/retailer for service.Fuels in Foreign
Countries
If you plan on driving in another
country outside the United States or
Canada, the proper fuel might be
hard to nd. Never use leaded
gasoline or any other fuel not
recommended in the previous text
on fuel. Costly repairs caused
by use of improper fuel would not
be covered by the vehicle warranty.
To check the fuel availability, ask
an auto club, or contact a major oil
company that does business in
the country where you will be
driving.
5-6 Service and Appearance Care