2018 BUICK ENCLAVE transmission

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Driving and Operating 255
When turning with a trailer, make
wider turns than normal so the
trailer will not strike soft shoulders,
curbs, road signs, trees, or other
objects. Use the turn signal well in
advance and avoid jerky or sudden
maneuvers.
Turn Signals When Towing a
Trailer
The turn signal indicators on the
instrument cluster flash whenever
signaling a turn or lane change.
Properly hooked up, the trailer
lamps also flash, telling other
drivers the vehicle is turning,
changing lanes, or stopping.
When towing a trailer, the arrows on
the instrument cluster flash for turns
even if the bulbs on the trailer are
burned out. Check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a lower
gear before starting down a long or
steep downgrade. If the
transmission is not shifted down, thebrakes might have to be used so
much that they would get hot and no
longer work well.
The vehicle can tow in D (Drive).
Use a lower gear if the transmission
shifts too often.
The Tow/Haul Mode may be used if
the transmission shifts too often.
See
Tow/Haul Mode 0216.
When towing at high altitude on
steep uphill grades, engine coolant
boils at a lower temperature than at
normal altitudes. If the engine is
turned off immediately after towing
at high altitude on steep uphill
grades, the vehicle could show
signs similar to engine overheating.
To avoid this, let the engine run
while parked, preferably on level
ground, with the transmission in
P (Park) for a few minutes before
turning the engine off. If the
overheat warning comes on, see
Engine Overheating 0276.
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.
If parking the rig on a hill: 1. Press the brake pedal, but do not shift into P (Park) yet. Turn
the wheels into the curb if
facing downhill or into traffic if
facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the brake pedal
until the chocks absorb
the load.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
256 Driving and Operating
4. Reapply the brake pedal. Thenapply the parking brake and
shift into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
.Start the engine.
. Shift into a gear.
. Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See the
Maintenance Schedule 0341.
Things that are especially important
in trailer operation are automatic
transmission fluid, engine oil, axle lubricant, belts, cooling system, and
brake system. Inspect these before
and during the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See
Engine Overheating
0 276.
Trailer Towing
Do not tow a trailer during break-in.
See New Vehicle Break-In 0200.
{Warning
The driver can lose control when
pulling a trailer if the correct
equipment is not used or the
vehicle is not driven properly. For
example, if the trailer is too heavy
or the trailer brakes are
inadequate for the load, the
vehicle may not stop as expected.
(Continued)
Warning (Continued)
The driver and passengers could
be seriously injured. The vehicle
may also be damaged; the
resulting repairs would not be
covered by the vehicle warranty.
Pull a trailer only if all the steps in
this section have been followed.
Ask your dealer for advice and
information about towing a trailer
with the vehicle.
Caution
Pulling a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To pull a trailer
correctly, follow the advice in this
section and see your dealer for
important information about
towing a trailer with the vehicle.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 263
Vehicle Care
General Information
General Information . . . . . . . . . . 264
California Proposition65 Warning . . . . . . . . . . . . . . . . . 264
California Perchlorate Materials Requirements . . . . . 265
Accessories and Modifications . . . . . . . . . . . . . . . . 265
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 265
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 266
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 267
Engine Oil . . . . . . . . . . . . . . . . . . . . 268
Engine Oil Life System . . . . . . . 270
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 271
Engine Air Cleaner/Filter . . . . . . 272
Cooling System . . . . . . . . . . . . . . 272
Engine Overheating . . . . . . . . . . 276
Washer Fluid . . . . . . . . . . . . . . . . . 277
Brakes . . . . . . . . . . . . . . . . . . . . . . . 278
Brake Fluid . . . . . . . . . . . . . . . . . . . 279
Battery - North America . . . . . . 280
All-Wheel Drive . . . . . . . . . . . . . . . 281 Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 281
Wiper Blade Replacement . . . . 281
Windshield Replacement . . . . . 283
Gas Strut(s) . . . . . . . . . . . . . . . . . . 283
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 284
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 285
LED Lighting . . . . . . . . . . . . . . . . . 285
License Plate Lamp . . . . . . . . . . 285
Electrical System
Electrical System Overload . . . 286
Fuses and Circuit Breakers . . . 286
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 287
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 292
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 295
All-Season Tires . . . . . . . . . . . . . . 296
Winter Tires . . . . . . . . . . . . . . . . . . 296
Tire Sidewall Labeling . . . . . . . . 296
Tire Designations . . . . . . . . . . . . . 298
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 299 Tire Pressure . . . . . . . . . . . . . . . . . 302
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 303
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 303
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 304
Tire Inspection . . . . . . . . . . . . . . . . 308
Tire Rotation . . . . . . . . . . . . . . . . . 309
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 310
Buying New Tires . . . . . . . . . . . . . 310
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 312
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 312
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 314
Wheel Replacement . . . . . . . . . . 314
Tire Chains . . . . . . . . . . . . . . . . . . . 315
If a Tire Goes Flat . . . . . . . . . . . . 315
Tire Changing . . . . . . . . . . . . . . . . 317
Compact Spare Tire . . . . . . . . . . 323Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . 324
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . 327

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 271
the best conditions, the oil life
system might indicate that an oil
change is not necessary for up to a
year. The engine oil and filter must
be changed at least once a year
and, at this time, the system must
be reset. Your dealer has trained
service people who will perform this
work and reset the system. It is also
important to check the oil regularly
over the course of an oil drain
interval and keep it at the proper
level.
If the system is ever reset
accidentally, the oil must be
changed at 5 000 km (3,000 mi)
since the last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
Reset the system whenever the
engine oil is changed so that the
system can calculate the next
engine oil change. To reset the
system:1. Display the REMAINING OIL
LIFE on the DIC.
See Driver Information Center
(DIC) (Base Level) 0148 or
Driver Information Center (DIC)
(Uplevel) 0150.
2. Press and hold
Von the DIC
while the Oil Life display is
active. The oil life will change
to 100%.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat
the procedure.
Automatic Transmission
Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to the
dealer and have it repaired as soon
as possible. Change the fluid at the intervals
listed in
Maintenance Schedule
0 341, and be sure to use the
transmission fluid listed in
Recommended Fluids and
Lubricants 0349.
Caution
Use of the incorrect automatic
transmission fluid may damage
the vehicle, and the damage may
not be covered by the vehicle
warranty. Always use the
automatic transmission fluid listed
in Recommended Fluids and
Lubricants 0349.
The transmission fluid will not reach
the end of the dipstick unless the
transmission is at operating
temperature. If you need to check
the transmission fluid level, please
take the vehicle to your dealer.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 281
Warning (Continued)
not careful. SeeJump Starting -
North America 0324 for tips on
working around a battery without
getting hurt.
Infrequent Usage: Remove the
black, negative (−) cable from the
battery to keep the battery from
running down.
Extended Storage: Remove the
black, negative (−) cable from the
battery or use a battery trickle
charger.
All-Wheel Drive
Transfer Case
Under normal driving conditions,
transfer case fluid does not require
maintenance unless there is a fluid
leak or unusual noise. If required,
have the transfer case serviced by
your dealer.
Park Brake and P (Park)
Mechanism Check
{Warning
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the parking brake.
. To check the parking brake's
holding ability: With the engine
running and the transmission in
N (Neutral), slowly remove foot
pressure from the regular brake
pedal. Do this until the vehicle is
held by the parking brake only. .
To check the P (Park)
mechanism's holding ability:
With the engine running, shift to
P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer if service is
required.
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear and cracking.
See Maintenance Schedule 0341.
Replacement blades come in
different types and are removed in
different ways. For proper type and
length, see Maintenance
Replacement Parts 0350.
Caution
Allowing the wiper arm to touch
the windshield when no wiper
blade is installed could damage
the windshield. Any damage that
occurs would not be covered by
(Continued)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 289
FusesUsage
F20 –
F21 –
F22 Electronic brake control module
F23 Parking/Trailer lamps
F24 Right trailer stoplamp/Turnlamp
F25 Steering column lock
F26 –
F27 Left trailer stoplamp/Turnlamp
F28 –
F29 –
F30 Washer pump
F31 –
F32 Left low –beam
headlamp
F33 Front fog lamps
F34 Horn
F35 – Fuses
Usage
F36 –
F37 Right low –beam
headlamp
F38 Automatic headlamp leveling
motor (if equipped)
F39 Transmission control module
F40 Left rear bus electrical center/
Ignition
F41 Instrument cluster
F42 Heating, ventilation, and air
conditioning
F43 Head-up display (if equipped)
F44 Communication gateway module/
Run/Crank (if
equipped)
F45 –
F46 – Fuses
Usage
F47 –
F48 –
F49 Interior rearview mirror
F50 Fuel system control module
F51 Heated steering wheel
F52 Folding seats switch
F53 –
F54 Coolant pump
F55 Air conditioning clutch
F56 Integrated chassis control module
F57 Engine control module/Ignition
F58 Transmission control module/
Ignition
F59 Engine control module battery

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 299
(1) Passenger (P-Metric) Tire:
The United States version of a
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire
and Rim Association.
(2) Tire Width
:The three-digit
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio
:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 60, as shown in
item 3 of the illustration, it would
mean that the tire's sidewall is
60 percent as high as it is wide. (4) Construction Code
:A letter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter
:Diameter of
the wheel in inches.
(6) Service Description
:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire's height to its width.
Belt
:A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
316 Vehicle Care
If a front tire fails, the flat tire
creates a drag that pulls the vehicle
toward that side. Take your foot off
the accelerator pedal and grip the
steering wheel firmly. Steer to
maintain lane position, and then
gently brake to a stop, well off the
road, if possible.
A rear blowout, particularly on a
curve, acts much like a skid and
may require the same correction as
used in a skid. Stop pressing the
accelerator pedal and steer to
straighten the vehicle. It may be
very bumpy and noisy. Gently brake
to a stop, well off the road,
if possible.
{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
underinflated or flat may cause a
blowout and a serious crash.
Never attempt to re-inflate a tire(Continued)
Warning (Continued)
that has been driven on while
severely underinflated or flat.
Have your dealer or an authorized
tire service center repair or
replace the flat tire as soon as
possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire. If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place, well off the road,
if possible. Turn on the hazard
warning flashers. See
Hazard
Warning Flashers 0170.
{Warning
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
causing injury or death. Find a
level place to change the tire. To
help prevent the vehicle from
moving:
1. Set the parking brake firmly.
2. Put an automatictransmission in P (Park) or a
manual transmission in
1 (First) or R (Reverse).
3. Turn off the engine and do not restart while the vehicle
is raised.
4. Do not allow passengers to remain in the vehicle.
(Continued)