light BUICK ENCLAVE 2021 Manual Online

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
Driving and Operating 241
side blind zone or rapidly approaching that
zone from behind. A lit LCA symbol indicates
it may be unsafe to change lanes. Before
making a lane change, check the LCA
display, check mirrors, glance over your
shoulder, and use the turn signals.
Left Outside MirrorDisplayRight Outside Mirror Display
When the vehicle is started, both outside
mirror LCA displays will briefly come on to
indicate the system is operating. When the
vehicle is in a forward gear, the left or right
outside mirror display will light up if a
moving vehicle is detected in the next lane
over in that blind zone or rapidly
approaching that zone. If the turn signal is
activated in the same direction as a
detected vehicle, this display will flash as an
extra warning not to change lanes. LCA can be disabled. When you disable LCA,
Side Blind Zone Alert is also disabled. See
“Collision/Detection Systems”
underVehicle
Personalization 0114. If LCA is disabled by
the driver, the LCA mirror displays will not
light up.
When the System Does Not Seem to
Work Properly
The LCA system requires some driving for
the system to calibrate to maximum
performance. This calibration may occur
more quickly if the vehicle is driving on a
straight highway road with traffic and
roadside objects (e.g., guardrails, barriers).
LCA displays may not come on when
passing a vehicle quickly, for a stopped
vehicle, or when towing a trailer. The LCA
detection zones that extend back from the
side of the vehicle do not move further back
when a trailer is towed. Use caution while
changing lanes when towing a trailer. LCA
may alert to objects attached to the vehicle,
such as a trailer, bicycle, or object extending
out to either side of the vehicle. Attached
objects may also interfere with the
detection of vehicles. This is normal system
operation; the vehicle does not need service. LCA may not always alert the driver to
vehicles in the next lane over, especially in
wet conditions or when driving on sharp
curves. The system does not need to be
serviced. The system may light up due to
guardrails, signs, trees, shrubs, and other
non-moving objects. This is normal system
operation; the vehicle does not need service.
LCA may not operate when the LCA sensors
in the left or right corners of the rear
bumper are covered with mud, dirt, snow,
ice, or slush, or in heavy rainstorms. For
cleaning instructions, see "Washing the
Vehicle" under
Exterior Care0314. If the DIC
still displays the system unavailable
message after cleaning both sides of the
vehicle toward the rear corners of the
vehicle, see your dealer.
If the LCA displays do not light up when
moving vehicles are in the side blind zone or
are rapidly approaching this zone and the
system is clean, the system may need
service. Take the vehicle to your dealer.
Radio Frequency Information
See Radio Frequency Statement 0346.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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242 Driving and Operating
Lane Keep Assist (LKA)
If equipped, LKA may help avoid crashes due
to unintentional lane departures. This
system uses a camera to detect lane
markings between 60 km/h (37 mph) and
180 km/h (112 mph). It may assist by gently
turning the steering wheel if the vehicle
approaches a detected lane marking. It may
also provide a Lane Departure Warning
(LDW) alert if the vehicle crosses a detected
lane marking. LKA can be overriden by
turning the steering wheel. This system is
not intended to keep the vehicle centered in
the lane. LKA will not assist and alert if the
turn signal is active in the direction of lane
departure, or if it detects that you are
accelerating, braking or actively steering.
{Warning
The LKA system does not continuously
steer the vehicle. It may not keep the
vehicle in the lane or give a Lane
Departure Warning (LDW) alert, even if a
lane marking is detected.
The LKA and LDW systems may not:(Continued)
Warning (Continued)
.Provide an alert or enough steering
assist to avoid a lane departure or
crash.
.Detect lane markings under poor
weather or visibility conditions. This
can occur if the windshield or
headlamps are blocked by dirt, snow,
or ice; if they are not in proper
condition; or if the sun shines directly
into the camera.
.Detect road edges.
.Detect lanes on winding or hilly roads.
If LKA only detects lane markings on one
side of the road, it will only assist or
provide an LDW alert when approaching
the lane on the side where it has
detected a lane marking. Even with LKA
and LDW, you must steer the vehicle.
Always keep your attention on the road
and maintain proper vehicle position
within the lane, or vehicle damage,
injury, or death could occur. Always keep
the windshield, headlamps, and camera
sensors clean and in good repair. Do not (Continued)
Warning (Continued)
use LKA in bad weather conditions or on
roads with unclear lane markings, such as
construction zones.
{Warning
Using LKA while towing a trailer or on
slippery roads could cause loss of control
of the vehicle and a crash. Turn the
system off.
How the System Works
LKA uses a camera sensor installed on the
windshield ahead of the rearview mirror to
detect lane markings. It may provide brief
steering assist if it detects an unintended
lane departure. It may further provide an
audible alert or the driver seat may pulse
indicating that a lane marking has been
crossed.
To turn LKA on and off, press
Aon the
center stack. If equipped, the indicator light
on the button comes on when LKA is on and
turns off when LKA is disabled.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 243
Ais green if LKA is ready to assist. LKA
may assist by gently turning the steering
wheel if the vehicle approaches a detected
lane marking.
Ais amber when
assisting. It may also provide a Lane
Departure Warning (LDW) alert by flashing
Aamber if the vehicle crosses a
detected lane marking. Additionally, there
may be three beeps, or the driver seat may
pulse three times, on the right or left,
depending on the lane departure direction.
Take Steering
The LKA system does not continuously steer
the vehicle. If LKA does not detect active
driver steering, an alert and chime may be
provided. Steer the vehicle to dismiss. LKA
may become temporarily unavailable after
repeated take steering alerts.
When the System Does Not Seem to
Work Properly
The system performance may be
affected by:
.Close vehicles ahead.
.Sudden lighting changes, such as when
driving through tunnels.
.Banked roads.
.Roads with poor lane markings, such as
two-lane roads.
A system unavailable message may display
if the camera is blocked. The LKA system
does not need service.
A camera blocked message may display if
the camera is blocked. Some driver
assistance systems may have reduced
performance or not work at all. An LKA or
LDW unavailable message may display if the
systems are temporarily unavailable. This
message could be due to a blocked camera.
The LKA system does not need service. Clean
the outside of the windshield behind the
rearview mirror.
LKA assistance and/or LDW alerts may occur
due to tar marks, shadows, cracks in the
road, temporary or construction lane
markings, or other road imperfections. This
is normal system operation; the vehicle does
not need service. Turn LKA off if these
conditions continue.Fuel
Top Tier Fuel
GM recommends the use of TOP TIER
Detergent Gasoline to keep the engine clean,
reduce engine deposits, and maintain
optimal vehicle performance. Look for the
TOP TIER Logo or see www.toptiergas.com
for a list of TOP TIER Detergent Gasoline
marketers and applicable countries.

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Driving and Operating 255
Tow/Haul Mode
For instructions on how to enter Tow/Haul
mode, seeDriver Mode Control 0218.
Tow/Haul assists when pulling a heavy
trailer or a large or heavy load. See Tow/
Haul Mode 0214.
Tow/Haul Mode is designed to be most
effective when the vehicle and trailer
combined weight is at least 75% of the
vehicle's Gross Combined Weight Rating
(GCWR). See “Weight of the Trailer” under
Trailer Towing 0249.
Tow/Haul Mode is most useful when pulling
a heavy trailer or a large or heavy load:
.through rolling terrain
.in stop-and-go traffic
.in busy parking lots
Operating the vehicle in Tow/Haul Mode
when lightly loaded or not towing will not
cause damage; however, it is not
recommended and may result in unpleasant
engine and transmission driving
characteristics and reduced fuel economy.
Trailer Sway Control (TSC)
Vehicles with StabiliTrak/Electronic Stability
Control (ESC) have a Trailer Sway Control
(TSC) feature. Trailer sway is unintended
side-to-side motion of a trailer while towing.
If the vehicle is towing a trailer and the TSC
detects that sway is increasing, the vehicle
brakes are selectively applied at each wheel,
to help reduce excessive trailer sway.
If equipped with the Integrated Trailer Brake
Control (ITBC) system, and the trailer has an
electric brake system, StabiliTrak/ESC may
also apply the trailer brakes.
If TSC is enabled, the Traction Control
System (TCS)/StabiliTrak/ESC warning light
will flash on the instrument cluster. Reduce
vehicle speed by gradually removing your
foot from the accelerator. If trailer sway
continues, StabiliTrak/ESC can reduce engine
torque to help slow the vehicle. TSC will not
function if StabiliTrak/ESC is turned off. See
Traction Control/Electronic Stability Control
0 217.
{Warning
Trailer sway can result in a crash and in
serious injury or death, even if the
vehicle is equipped with TSC.
If the trailer begins to sway, reduce
vehicle speed by gradually removing your
foot from the accelerator. Then pull over
to check the trailer and vehicle to help
correct possible causes, including an
improperly or overloaded trailer,
unrestrained cargo, improper trailer hitch
configuration, or improperly inflated or
incorrect vehicle or trailer tires. See
Towing Equipment 0252 for trailer
ratings and hitch setup recommendations.
Trailer Tires
Special Trailer (ST) tires differ from vehicle
tires. Trailer tires are designed with stiff
sidewalls to help prevent sway and to
support heavy loads. These features can
make it difficult to determine if the trailer
tire pressures are low only based on a visual
inspection.

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256 Driving and Operating
Always check all trailer tire pressures before
each trip when the tires are cool. Low trailer
tire pressure is a leading cause of trailer tire
blow-outs.
Trailer tires deteriorate over time. The trailer
tire sidewall will show the week and year
the tire was manufactured. Many trailer tire
manufacturers recommend replacing tires
more than six years old.
Overloading is another leading cause of
trailer tire blow-outs. Never load your trailer
with more weight than the tires are
designed to support. The load rating is
located on the trailer tire sidewall.
Always know the maximum speed rating for
the trailer tires before driving. This may be
significantly lower than the vehicle tire
speed rating. The speed rating may be on
the trailer tire sidewall. If the speed rating is
not shown, the default trailer tire speed
rating is 105 km/h (65 mph).Conversions and Add-Ons
Add-On Electrical Equipment
{Warning
The Data Link Connector (DLC) is used for
vehicle service and Emission Inspection/
Maintenance testing. SeeMalfunction
Indicator Lamp (Check Engine Light) 0102
. A device connected to the DLC —such
as an aftermarket fleet or driver-behavior
tracking device —may interfere with
vehicle systems. This could affect vehicle
operation and cause a crash. Such devices
may also access information stored in the
vehicle’s systems.
Caution
Some electrical equipment can damage
the vehicle or cause components to not
work and would not be covered by the
vehicle warranty. Always check with your
dealer before adding electrical equipment.
Add-on equipment can drain the vehicle's
12-volt battery, even if the vehicle is not
operating. The vehicle has an airbag system. Before
attempting to add anything electrical to the
vehicle, see
Servicing the Airbag-Equipped
Vehicle 061 and
Adding Equipment to the Airbag-Equipped
Vehicle 061.

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Vehicle Care 257
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 258
California Proposition 65 Warning . . . . . 258
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 258
Accessories and Modifications . . . . . . . . . 258
Vehicle Checks
Doing Your Own Service Work . . . . . . . . 259
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Engine Compartment Overview . . . . . . . . 261
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Engine Oil Life System . . . . . . . . . . . . . . . . 264
Automatic Transmission Fluid . . . . . . . . . 264
Engine Air Filter Life System . . . . . . . . . . 265
Engine Air Cleaner/Filter . . . . . . . . . . . . . . 265
Cooling System . . . . . . . . . . . . . . . . . . . . . . . 266
Engine Overheating . . . . . . . . . . . . . . . . . . . 269
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Battery - North America . . . . . . . . . . . . . . . 272
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 273
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Wiper Blade Replacement . . . . . . . . . . . . . 273
Windshield Replacement . . . . . . . . . . . . . . 274
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 276
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 276
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
License Plate Lamp . . . . . . . . . . . . . . . . . . . . 276
Electrical System
High Voltage Devices and Wiring . . . . . . 277
Electrical System Overload . . . . . . . . . . . . . 277
Fuses and Circuit Breakers . . . . . . . . . . . . . 277
Engine Compartment Fuse Block . . . . . . 278
Instrument Panel Fuse Block . . . . . . . . . . . 281
Rear Compartment Fuse Block . . . . . . . . . 283
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . 286
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 286
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 288
Tire Terminology and Definitions . . . . . . 289
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Tire Pressure Monitor System . . . . . . . . . 293
Tire Pressure Monitor Operation . . . . . . 294
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 297
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 297
When It Is Time for New Tires . . . . . . . . 298 Buying New Tires . . . . . . . . . . . . . . . . . . . . . 299
Different Size Tires and Wheels . . . . . . . 300
Uniform Tire Quality Grading . . . . . . . . . 300
Wheel Alignment and Tire Balance . . . . 301
Wheel Replacement . . . . . . . . . . . . . . . . . . . 301
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 303
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 304
Compact Spare Tire . . . . . . . . . . . . . . . . . . . 309
Jump Starting
Jump Starting - North America . . . . . . . . 309
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . . 312
Recreational Vehicle Towing . . . . . . . . . . . 312
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320

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Vehicle Care 265
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, take the vehicle
to your dealer.
Engine Air Filter Life System
When to Change Engine Air Filter
If equipped, this feature provides an
indication of when to change the engine air
filter. It is based on driving conditions,
which can cause when to change to vary
greatly. It is possible an air filter change
may not be indicated for up to four years.
When the "Replace at Next Oil Change"
message displays, the engine air filter
should be replaced at the time of the next
engine oil change. When the "Replace
Engine Air Filter Now" message displays, the
engine air filter should be replaced as soon
as possible. Reset the engine air filter life
system after the engine air filter is replaced.
See your dealer for service and to reset the
system.
How to Reset Engine Air Filter Life
System
Reset the system whenever the engine air
filter is replaced so that the system can
calculate the next engine air filter change.
To reset:1. Place the vehicle in P (Park).
2. Select Engine Air Filter Life on the DIC menu. See Driver Information Center
(DIC) (Base Level) 0109 or
Driver Information Center (DIC) (Uplevel)
0 111.
3. Press > to move to the Reset/Disable display area. Select Reset then press
V.
Then press Yes to confirm the reset.
4. 100% Air Filter Life will be displayed when the Engine Air Filter Life System is
successfully reset.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the engine
compartment on the passenger side of the
vehicle. See Engine Compartment Overview
0 261.
When to Inspect the Engine Air Cleaner/
Filter
.For intervals on changing and inspecting
the engine air filter, see Maintenance
Schedule 0323.
.If equipped with Engine Air Filter Life
System, see Engine Air Filter Life System
0 265.
.If driving in very dusty areas, follow the
engine air filter inspecting and changing
intervals, see Maintenance Schedule
0 323.
How to Inspect/Replace the Engine Air
Cleaner/Filter
Do not start the engine or have the engine
running with the engine air cleaner/filter
housing open. Before removing the engine
air cleaner/filter, make sure that the engine
air cleaner/filter housing and nearby
components are free of dirt and debris.
Remove the engine air cleaner/filter. Lightly
tap and shake the engine air cleaner/filter
(away from the vehicle), to release loose
dust and dirt. Inspect the engine air cleaner/
filter for damage, and replace if damaged.
Do not clean the engine air cleaner/filter or
components with water or compressed air.

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272 Vehicle Care
installed. Add or remove fluid, as necessary,
only when work is done on the brake
hydraulic system.
{Warning
If too much brake fluid is added, it can
spill on the engine and burn, if the
engine is hot enough. You or others could
be burned, and the vehicle could be
damaged. Add brake fluid only when
work is done on the brake hydraulic
system.
When the brake fluid falls to a low level,
the brake warning light comes on. See Brake
System Warning Light 0103.
Brake fluid absorbs water over time which
degrades the effectiveness of the brake fluid.
Replace brake fluid at the specified intervals
to prevent increased stopping distance. See
Maintenance Schedule 0323.
What to Add
Use only GM approved DOT 3 brake fluid
from a clean, sealed container. See
Recommended Fluids and Lubricants 0331.
{Warning
The wrong or contaminated brake fluid
could result in damage to the brake
system. This could result in the loss of
braking leading to a possible injury.
Always use the proper GM approved
brake fluid.
Caution
If brake fluid is spilled on the vehicle's
painted surfaces, the paint finish can be
damaged. Immediately wash off any
painted surface.
Battery - North America
The original equipment battery is
maintenance free. Do not remove the cap
and do not add fluid.
Refer to the replacement number on the
original battery label when a new battery is
needed. For replacement of the battery, see
your dealer. Stop/Start System
The vehicle has a Stop/Start system to shut
off the engine to help conserve fuel. See
Stop/Start System
0206.
It has an Absorbed Glass Mat (AGM) 12-volt
battery. Installation of a standard 12-volt
battery will result in reduced 12-volt
battery life.
When using a 12-volt battery charger on the
12-volt AGM battery, some chargers have an
AGM battery setting on the charger.
If available, use the AGM setting on the
charger, to limit charge voltage to 14.8 volts.
{Warning
WARNING: Battery posts, terminals, and
related accessories contain lead and lead
compounds, chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
Batteries also contain other chemicals
known to the State of California to cause
cancer. WASH HANDS AFTER HANDLING.
For more information go to
www.P65Warnings.ca.gov/
passenger-vehicle.

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276 Vehicle Care
Headlamp Aiming
Front Headlamp Aiming
Headlamp aim has been preset and should
need no further adjustment.
If the vehicle is damaged in a crash, the
headlamp aim may be affected.
If adjustment to the headlamps is necessary,
see your dealer.
Bulb Replacement
For the proper type of replacement bulbs,
or any bulb changing procedure not listed in
this section, contact your dealer.
Caution
Do not replace incandescent bulbs with
aftermarket LED replacement bulbs. This
can cause damage to the vehicle electrical
system.
LED Lighting
This vehicle has several LED lamps. For
replacement of any LED lighting assembly,
contact your dealer.
License Plate Lamp
This section is for vehicles without a Rear
Camera Mirror (RCM). Vehicles with an RCM
have an LED license plate lamp.
Lamp Assembly
Bulb Assembly
To replace one of these bulbs: 1. Push the left end of the lamp assembly toward the right.
2. Turn the lamp assembly down to remove it.
3. Turn the bulb socket (1) counterclockwise to remove it from the lamp assembly (3).
4. Pull the bulb (2) straight out of the bulb socket (1).
5. Push the replacement bulb straight into the bulb socket and turn the bulb socket
clockwise to install it into the lamp
assembly.

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280 Vehicle Care
FusesUsage
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 Daylight running lamps
F34 Horn F35 –
F36 –
F37 Right low –beam
headlamp Fuses
Usage
F38 Automatic headlamp leveling motor
F39 Transmission control module
F40 Left rear bus electrical center/Ignition
F41 Instrument cluster
F42 Heating, ventilation, and air conditioning
F43 Head-up display/ Reflective light auxiliary
display
F44 Communication gateway module/Run/
Crank
F45 –
F46 –
F47 –
F48 –
F49 Interior rearview mirror F50 Fuel system control module/Shifter interface
board/Run/Crank Fuses
Usage
F51 Heated steering wheel
F52 Folding seats switch
F53 Coolant pump
F54 –
F55 Air conditioning clutch
F56 –
F57 Engine control module/ Ignition
F58 Transmission control module/Ignition
F59 Engine control module battery
F60 Engine control module–even
F61 O2 sensor 1/Air flow
F62 –
F63 O2 sensor 2/Canister/ Engine oil/Turbo
F64 Aeroshutter F65 Engine control module powertrain 1