2021 BUICK ENCLAVE roof

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
Driving and Operating 195
Caution
Operating the vehicle for extended
periods without the front fascia lower air
dam installed can cause improper airflow
to the engine. Reattach the front fascia
air dam after off-road driving.
Loading the Vehicle for Off-Road Driving
{Warning
.Unsecured cargo on the load floor can
be tossed about when driving over
rough terrain. You or your passengers
can be struck by flying objects. Secure
the cargo properly.
.Keep cargo in the cargo area as far
forward and as low as possible. The
heaviest things should be on the floor,
forward of the rear axle.
.Heavy loads on the roof raise the
vehicle's center of gravity, making it
more likely to roll over. You can be
seriously or fatally injured if the
vehicle rolls over. Put heavy loads
inside the cargo area, not on the roof.
For more information about loading the
vehicle, see Vehicle Load Limits 0200.
Environmental Concerns
.Always use established trails, roads, and
areas that have been set aside for public
off-road recreational driving and obey all
posted regulations.
.Do not damage shrubs, flowers, trees,
or grasses or disturb wildlife.
.Do not park over things that burn. See
Parking over Things That Burn 0209.
Driving on Hills
Driving safely on hills requires good
judgment and an understanding of what the
vehicle can and cannot do.
{Warning
Many hills are simply too steep for any
vehicle. Driving up hills can cause the
vehicle to stall. Driving down hills can
cause loss of control. Driving across hills
can cause a rollover. You could be injured
or killed. Do not drive on steep hills.
Before driving on a hill, assess the
steepness, traction, and obstructions. If the
terrain ahead cannot be seen, get out of the
vehicle and walk the hill before driving
further. When driving on hills:
.Use a low gear and keep a firm grip on
the steering wheel.
.Maintain a slow speed.
.When possible, drive straight up or down
the hill.
.Slow down when approaching the top of
the hill.
.Use headlamps even during the day to
make the vehicle more visible.
{Warning
Driving to the top of a hill at high speed
can cause a crash. There could be a
drop-off, embankment, cliff, or even
another vehicle. You could be seriously
injured or killed. As you near the top of a
hill, slow down and stay alert.
.Never go downhill forward or backward
with the transmission in N (Neutral). The
brakes could overheat and you could lose
control.
.When driving down a hill, keep the
vehicle headed straight down. Use a low
gear because the engine will work with
the brakes to slow the vehicle and help
keep the vehicle under control.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
Driving and Operating 207
2. Open the hood and unwrap the electricalcord. The bundled cord is on the driver
side of the engine compartment, in front
of the battery. See Engine Compartment
Overview 0261.
Check the heater cord for damage. If it is
damaged, do not use it. See your dealer
for a replacement. Inspect the cord for
damage yearly.
3. Plug the cord into a normal, grounded 110-volt AC outlet.
{Warning
Improper use of the heater cord or an
extension cord can damage the cord and
may result in overheating and fire.
.Plug the cord into a three-prong
electrical utility receptacle that is
protected by a ground fault detection
function. An ungrounded outlet could
cause an electric shock.
.Use a weatherproof, heavy-duty,
15 amp-rated extension cord if needed.
Failure to use the recommended
extension cord in good operating
condition, or using a damaged heater
(Continued)
Warning (Continued)
or extension cord, could make it
overheat and cause a fire, property
damage, electric shock, and injury.
.Do not operate the vehicle with the
heater cord permanently attached to
the vehicle. Possible heater cord and
thermostat damage could occur.
.While in use, do not let the heater
cord touch vehicle parts or sharp
edges. Never close the hood on the
heater cord.
.Before starting the vehicle, unplug the
cord, reattach the cover to the plug,
and securely fasten the cord. Keep the
cord away from any moving parts.
4. Before starting the engine, be sure to unplug and store the cord as it was
before to keep it away from moving
engine parts. If you do not, it could be
damaged.
The length of time the heater should remain
plugged in depends on several factors. Ask a
dealer in the area where you will be parking
the vehicle for the best advice on this.
Retained Accessory Power (RAP)
When the ignition is turned from on to off,
the following features (if equipped) will
continue to function for up to 10 minutes,
or until the driver door is opened. These
features will also work when the ignition is
in RUN or ACC/ACCESSORY:
.Infotainment System
.Power Windows (during RAP this
functionality will be lost when any door
is opened)
.Sunroof (during RAP this functionality will
be lost when any door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Shifting Into Park
To shift into P (Park): 1. Press the brake pedal and come to complete stop.
2. Press the button on top of the shift lever to shift into P (Park). See Automatic
Transmission 0210.
3. The P indicator on the shift lever will turn red when the vehicle is in P (Park).

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
Driving and Operating 229
Do not use ACC when driving on steep hills
or when towing a trailer. ACC will not detect
a vehicle in the lane while driving on steep
hills. The driver will often need to take over
acceleration and braking on steep hills,
especially when towing a trailer. If the
brakes are applied, the ACC disengages.
Disengaging ACC
There are three ways to disengage ACC:
.Step lightly on the brake pedal.
.Press*.
.Press5.
Erasing Speed Memory
The cruise control set speed is erased from
memory if
5is pressed or if the ignition is
turned off.
Weather Conditions Affecting ACC
System operation may be limited under
snow, heavy rain, or road spray conditions.
Accessory Installations and Vehicle
Modifications
Do not install or place any object around
the front camera windshield area that would
obstruct the front camera view. Do not install objects on top of the vehicle
that overhang and obstruct the front
camera, such as a canoe, kayak, or other
items that can be transported on a roof rack
system. See
Roof Rack System 085.
Do not modify the hood, headlamps, or fog
lamps, as this may limit the camera’s ability
to detect an object.
Cleaning the Sensing System
The radar sensor on the front of the vehicle
can become blocked by snow, ice, dirt,
or mud. This area needs to be cleaned for
ACC to operate properly.
If ACC will not operate, regular cruise control
may be available. See “Switching Between
ACC and Regular Cruise Control” previously
in this section. Always consider driving
conditions before using either cruise control
system.
For cleaning instructions, see “Washing the
Vehicle” underExterior Care 0314.
System operation may also be limited under
snow, heavy rain, or road spray conditions.
Driver Assistance Systems
This vehicle may have features that work
together to help avoid crashes or reduce
crash damage while driving, backing, and
parking. Read this entire section before
using these systems.
{Warning
Do not rely on the Driver Assistance
Systems. These systems do not replace
the need for paying attention and driving
safely. You may not hear or feel alerts or
warnings provided by these systems.
Failure to use proper care when driving
may result in injury, death, or vehicle
damage. See Defensive Driving 0191.
Under many conditions, these systems
will not:
.Detect children, pedestrians, bicyclists,
or animals.
.Detect vehicles or objects outside the
area monitored by the system.
.Work at all driving speeds.
.Warn you or provide you with enough
time to avoid a crash. (Continued)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
282 Vehicle Care
FusesUsage
F1 Body control module 6
F2 Diagnostic link
F3 Electric steering column lock
F4 Rear USB port F5 Rear sunshade/Park/ Reverse/Neutral/
Drive/Low
F6 Heating, ventilation, and air conditioning
F7 Body control module 3
F8 Adaptive front lighting system
F9 Right front heated seat
F10 Airbag F11 –
F12 Amplifier
F13 Body control module 7
F14 Left front heated seat F15 –
F16 Sunroof Fuses
Usage
F17 Communication gateway module
F18 Instrument cluster/Head up display
F19 Body control module 1
F20 Wireless charger module
F21 Body control module 4
F22 Infotainment
F23 Body control module 2
F24 Park/Reverse/Neutral/ Drive/Low
F25 Park assist/Shifter interface board
F26 Communications integration module
F27 Video
F28 Radio/Heating, ventilation, and air
conditioning display
F29 Radio
F30 Steering wheel controls Fuses
Usage
F31 Front blower
F32 DC AC inverter
F33 Driver power seat
F34 Passenger power seat F35 Feed/Body control module 4
F36 Electric power steering F37 Power outlet/Wireless charger/Accessory
F38 Body control module 8
F39 Steering wheel controls backlighting
Circuit Breakers/ Minifuse Usage
F40 –
F41 –
F42 Auxiliary power outlet (CB)/Lighter (minifuse)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
324 Service and Maintenance
Air Conditioning Desiccant (Replace Every
Seven Years)
The air conditioning system requires
maintenance every seven years. This service
requires replacement of the desiccant to
help the longevity and efficient operation of
the air conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required Services
Every 12 000 km/7,500 mi
Rotate the tires, if recommended for the
vehicle, and perform the following services.
SeeTire Rotation 0297.
.Check engine oil level and oil
life percentage. If needed, change engine
oil and filter, and reset oil life system.
See Engine Oil 0262 and
Engine Oil Life System 0264.
.If equipped with the engine air filter life
system, check the air filter
life percentage. If necessary, replace the
engine air filter and reset the engine air
filter life system. See Engine Air Filter Life
System 0265. If the vehicle is not
equipped with the engine air filter life
system, inspect the engine air cleaner
filter. See Engine Air Cleaner/Filter 0265.
.Check engine coolant level. See Cooling
System 0266.
.Check windshield washer fluid level. See
Washer Fluid 0270.
.Check tire inflation pressures. See Tire
Pressure 0291.
.Inspect tire wear. See Tire Inspection
0 297.
.Visually check for fluid leaks.
.Inspect brake system. See Exterior Care
0 314.
.Visually inspect steering, suspension, and
chassis components for damage, including
cracks or tears in the rubber boots, loose
or missing parts, or signs of wear at least
once a year. See Exterior Care0314.
.Inspect power steering for proper
electrical connections, binding, cracks,
chafing, etc.
.Visually inspect halfshafts and drive
shafts for excessive wear, lubricant leaks,
and/or damage including: tube dents or
cracks, constant velocity joint or universal
joint looseness, cracked or missing boots,
loose or missing boot clamps, center
bearing excessive looseness, loose or
missing fasteners, and axle seal leaks.
.Check restraint system components. See
Safety System Check 051.
.Visually inspect fuel system for damage
or leaks.
.Visually inspect exhaust system and
nearby heat shields for loose or damaged
parts.
.Lubricate body components. See Exterior
Care 0314.
.Check parking brake and automatic
transmission park mechanism. See Park
Brake and P (Park) Mechanism Check
0 273.
.Check accelerator pedal for damage, high
effort, or binding. Replace if needed.
.Visually inspect gas strut for signs of
wear, cracks, or other damage. Check the
hold open ability of the strut. If the hold
open ability is low, service the gas strut.
See Gas Strut(s) 0275.
.Inspect sunroof track and seal,
if equipped. See Sunroof032.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
364 Index
Power (cont'd)Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 36
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . . 51
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 347
Problems with Route Guidance . . . . . . . . . . .154
Program
Courtesy Transportation . . . . . . . . . . . . . . . 343
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 244
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . 258, 272, 309,
Back Cover
Publication Ordering Information . . . . . . . . 345
R
Radio HD Radio Technology . . . . . . . . . . . . . . . . . . 136
Radio Data System (RDS) . . . . . . . . . . . . . . . . . 137
Radio Frequency Statement . . . . . . . . . . . . . . 346
Radio Reception . . . . . . . . . . . . . . . . . . . . . . . . . .138
Radios AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . . . 28
Rear Climate Control System . . . . . . . . . . . . .187
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 Rear Seats (cont'd)
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Rear Vision Camera (RVC) . . . . . . . . . . . . . . . . . 231
Rear Window Washer/Wiper . . . . . . . . . . . . . 89
Rearview Mirrors Automatic Dimming . . . . . . . . . . . . . . . . . . . . 28
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . .37
Recognition
Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Recommended Fluids and Lubricants . . . . . . 331
Records
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Recreational Vehicle Towing . . . . . . . . . . . . . . 312
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .341
Remote Keyless Entry (RKE) System . . . . . . . .7
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . . . . 13
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Replacing Airbag System . . . . . . . . . . . . . . . . . . 62
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Replacing Seat Belt System Parts after
a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Reporting Safety Defects
Canadian Government . . . . . . . . . . . . . . . . . 346
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 347
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 346
Restraints Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Retained Accessory Power (RAP) . . . . . . . . . 207
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . 28
Roads
Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Roadside Assistance Program . . . . . . . . . . . . .341
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . . . 85
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Routing, Engine Drive Belt . . . . . . . . . . . . . . . 337
Running the Vehicle While Parked . . . . . . . 209
S
Safety Defects Reporting Canadian Government . . . . . . . . . . . . . . . . . 346
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 347
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 346
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Safety System Check . . . . . . . . . . . . . . . . . . . . . . 51
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Scheduling Appointments . . . . . . . . . . . . . . . . 342
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
Index 365
Seat Belts (cont'd)Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
How to Wear Seat Belts Properly . . . . . . . 47
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 48
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Replacing after a Crash . . . . . . . . . . . . . . . . . 52
Use During Pregnancy . . . . . . . . . . . . . . . . . . . 51
Seats Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . 34
Heated and Ventilated Front . . . . . . . . . . . . 40
Heated, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lumbar Adjustment, Front . . . . . . . . . . . . . . 36
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Power Adjustment, Front . . . . . . . . . . . . . . . 36
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 37
Third Row Seat . . . . . . . . . . . . . . . . . . . . . . . . . 44
Securing Child Restraints . . . . . . . . . . . . . . . 77, 79
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Accessories and Modifications . . . . . . . . . 258
Doing Your Own Work . . . . . . . . . . . . . . . . . 259
Maintenance Records . . . . . . . . . . . . . . . . . . 333 Service (cont'd)
Maintenance, General Information . . . . . 322
Parts Identification . . . . . . . . . . . . . . . . . . . . . 334
Scheduling Appointments . . . . . . . . . . . . . . 342
Service Electric Parking Brake Light . . . . . . 104
Services Special Application . . . . . . . . . . . . . . . . . . . . . 328
Servicing System . . . . . . . . . . . . . . . . . . . . . . . . .154
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . .61
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . 240
Signals, Turn and Lane-Change . . . . . . . . . . . . 125
Software Updates . . . . . . . . . . . . . . . . . . . . . . . . . 135
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Special Application Services . . . . . . . . . . . . . . 328
Specifications and Capacities . . . . . . . . . . . . . 335
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Sport Mode Light . . . . . . . . . . . . . . . . . . . . . . . . 105
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Start Vehicle, Remote . . . . . . . . . . . . . . . . . . . . . . 13
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 205
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 Steering (cont'd)
Heated Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . 87
Wheel Controls . . . . . . . . . . . . . . . . . . . . . . . . . 87
Steering Wheel Controls . . . . . . . . . . . . . . . . . . 131
Stop/Start System . . . . . . . . . . . . . . . . . . . . . . . 206
Storage Areas Cargo Management System . . . . . . . . . . . . 83
Center Console . . . . . . . . . . . . . . . . . . . . . . . . . 83
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . 85
Sunglasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Storage Compartments . . . . . . . . . . . . . . . . . . . 82
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Sunglass Storage . . . . . . . . . . . . . . . . . . . . . . . . . 82
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
System Engine Air Filter Life . . . . . . . . . . . . . . . . . . . 265
Forward Collision Alert (FCA) . . . . . . . . . . . 235
Global Positioning . . . . . . . . . . . . . . . . . . . . . 153
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Roof Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85