2021 BUICK ENCLAVE towing

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
60 Seats and Restraints
If a person of adult size is sitting in the
front outboard passenger seat, but the OFF
indicator is lit, it could be because that
person is not sitting properly in the seat or
that the child restraint locking feature is
engaged. Use the following steps to allow
the system to detect that person and enable
the front outboard passenger frontal airbag:1. Turn the vehicle off.
2. Remove any additional material from the seat, such as blankets, cushions, seat
covers, seat heaters, or seat massagers.
3. Place the seatback in the fully upright position.
4. Have the person sit upright in the seat, centered on the seat cushion, with legs
comfortably extended.
5. If the shoulder portion of the belt is pulled out all the way, the child restraint
locking feature will be engaged. This
may unintentionally cause the passenger
sensing system to turn the airbag off for
some adult-sized occupants. If this
happens, unbuckle the belt, let the belt
go back all the way, and then buckle the
belt again without pulling the belt out
all the way. 6. Restart the vehicle and have the person
remain in this position for two to
three minutes after the ON indicator
is lit.
{Warning
If the front outboard passenger airbag is
turned off for an adult-sized occupant,
the airbag will not be able to inflate and
help protect that person in a crash,
resulting in an increased risk of serious
injury or even death. An adult-sized
occupant should not ride in the front
outboard passenger seat, if the passenger
airbag OFF indicator is lit.
Additional Factors Affecting System
Operation
Seat belts help keep the passenger in
position on the seat during vehicle
maneuvers and braking, which helps the
passenger sensing system maintain the
passenger airbag status. See “Seat Belts”
and “Child Restraints” in the Index for
additional information about the importance
of proper restraint use. A thick layer of additional material, such as
a blanket or cushion, or aftermarket
equipment such as seat covers, seat heaters,
and seat massagers can affect how well the
passenger sensing system operates. We
recommend that you not use seat covers or
other aftermarket equipment except when
approved by GM for your specific vehicle.
See
Adding Equipment to the
Airbag-Equipped Vehicle 061 for more
information about modifications that can
affect how the system operates.
The ON indicator may be lit if an object,
such as a briefcase, handbag, grocery bag,
laptop, or other electronic device, is put on
an unoccupied seat. If this is not desired,
remove the object from the seat.{Warning
Stowing articles under the passenger seat
or between the passenger seat cushion
and seatback may interfere with the
proper operation of the passenger
sensing system.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
102 Instruments and Controls
Charging System Light
The charging system light comes on briefly
when the ignition is turned on, but the
engine is not running, as a check to show
the light is working. It should go out when
the engine is started.
If the light stays on, or comes on while
driving, there may be a problem with the
electrical charging system. Have it checked
by your dealer. Driving while this light is on
could drain the battery.
When this light comes on, or is flashing, the
Driver Information Center (DIC) also displays
a message.
If a short distance must be driven with the
light on, be sure to turn off all accessories,
such as the radio and air conditioner. Find a
safe place to stop the vehicle.
Malfunction Indicator Lamp
(Check Engine Light)
This light is part of the vehicle’s emission
control on-board diagnostic system. If this
light is on while the engine is running, a
malfunction has been detected and the
vehicle may require service. The light should
come on to show that it is working when
the ignition is in Service Mode. SeeIgnition
Positions 0203.
Malfunctions are often indicated by the
system before any problem is noticeable.
Being aware of the light and seeking service
promptly when it comes on may prevent
damage.
Caution
If the vehicle is driven continually with
this light on, the emission control system
may not work as well, the fuel economy
may be lower, and the vehicle may not
(Continued)
Caution (Continued)
run smoothly. This could lead to costly
repairs that might not be covered by the
vehicle warranty.
Caution
Modifications to the engine, transmission,
exhaust, intake, or fuel system, or the
use of replacement tires that do not
meet the original tire specifications, can
cause this light to come on. This could
lead to costly repairs not covered by the
vehicle warranty. This could also affect
the vehicle’s ability to pass an Emissions
Inspection/Maintenance test. See
Accessories and Modifications 0258.
If the light is flashing : A malfunction has
been detected that could damage the
emission control system and increase vehicle
emissions. Diagnosis and service may be
required.
To help prevent damage, reduce vehicle
speed and avoid hard accelerations and
uphill grades. If towing a trailer, reduce the
amount of cargo being hauled as soon as
possible.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
104 Instruments and Controls
If the light comes on while driving, pull off
the road and stop carefully. The brake pedal
might be harder to push, or the brake pedal
may go closer to the floor. It could take
longer to stop. If the light is still on, have
the vehicle towed for service. SeeTowing
the Vehicle 0312.
{Warning
The brake system might not be working
properly if the brake system warning
light is on. Driving with the brake system
warning light on can lead to a crash.
If the light is still on after the vehicle has
been pulled off the road and carefully
stopped, have the vehicle towed for
service.
Electric Parking Brake Light
MetricEnglish This light comes on when the parking brake
is applied. If the light continues flashing
after the parking brake is released, or while
driving, there is a problem with the Electric
Parking Brake system. A message may also
display in the Driver Information
Center (DIC).
If the light does not come on, or remains
flashing, see your dealer.
Service Electric Parking Brake
Light
This light should come on briefly when
starting the vehicle. If it does not come on,
have it fixed so it will be ready to warn if
there is a problem.
If this light stays on, take the vehicle to
your dealer as soon as possible. See the
information for the Electric Parking Brake
under
Electric Parking Brake 0215.
A message may also display in the Driver
Information Center (DIC).
Antilock Brake System (ABS)
Warning Light
This warning light should come on briefly
when the vehicle is turned on. If the light
does not come on, have it fixed so it will be
ready to warn if there is a problem.
If the light comes on while driving, safely
stop as soon as it is possible and turn off
the vehicle. Then turn on the vehicle again
to reset the system.
If the ABS warning light stays on, or comes
on again while driving, the vehicle needs
service. A chime may also sound when the
light stays on.
If the ABS warning light is the only light on,
the vehicle has regular brakes, but ABS is
not functioning.
If both the ABS warning light and the brake
system warning light are on, ABS is not
functioning and there is a problem with the
regular brakes. See your dealer for service.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
190 Driving and Operating
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . . 191
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . 191
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 191
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . . 192
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 192
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 193
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 194
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . 194
Driving on Wet Roads . . . . . . . . . . . . . . . . . 197
Hill and Mountain Roads . . . . . . . . . . . . . . 198
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 198
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 199
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . 200
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 203
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . 203
Starting the Engine . . . . . . . . . . . . . . . . . . . 205
Stop/Start System . . . . . . . . . . . . . . . . . . . . 206
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 206
Retained Accessory Power (RAP) . . . . . . . 207
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . 207
Shifting out of Park . . . . . . . . . . . . . . . . . . . 208
Parking over Things That Burn . . . . . . . . 209
Extended Parking . . . . . . . . . . . . . . . . . . . . . 209
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 209
Running the Vehicle While Parked . . . . 209
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 210
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . 214
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 214
Brakes
Antilock Brake System (ABS) . . . . . . . . . . . 215
Electric Parking Brake . . . . . . . . . . . . . . . . . . 215
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . 217
Ride Control Systems
Traction Control/Electronic StabilityControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Driver Mode Control . . . . . . . . . . . . . . . . . . . 218
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 219
Adaptive Cruise Control (Advanced) . . . . 221
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 229
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Assistance Systems for Driving . . . . . . . . 235 Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Automatic Emergency Braking (AEB) . . . 237
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Side Blind Zone Alert (SBZA) . . . . . . . . . . 240
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 240
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . 242
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Recommended Fuel . . . . . . . . . . . . . . . . . . . 244
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 244
Fuels in Foreign Countries . . . . . . . . . . . . . 244
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 244
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . 244
Filling a Portable Fuel Container . . . . . . 246
Trailer Towing
General Towing Information . . . . . . . . . . 246
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . . . . . . . . . 246
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . 249
Towing Equipment . . . . . . . . . . . . . . . . . . . . 252
Trailer Sway Control (TSC) . . . . . . . . . . . . . 255
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . 256

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
200 Driving and Operating
If stuck too severely for the traction system
to free the vehicle, turn the traction system
off and use the rocking method. See
Traction Control/Electronic Stability Control
0217.
{Warning
If the vehicle's tires spin at high speed,
they can explode, and you or others
could be injured. The vehicle can
overheat, causing an engine compartment
fire or other damage. Spin the wheels as
little as possible and avoid going above
56 km/h (35 mph).
Select All-Wheel Drive (AWD) Mode. See
Driver Mode Control 0218 and
All-Wheel Drive 0214.
Rocking the Vehicle to Get it Out
Turn the steering wheel left and right to
clear the area around the front wheels. Turn
off any traction system. Shift back and forth
between R (Reverse) and a low forward gear,
spinning the wheels as little as possible. To
prevent transmission wear, wait until the
wheels stop spinning before shifting gears.
Release the accelerator pedal while shifting,
and press lightly on the accelerator pedal when the transmission is in gear. Slowly
spinning the wheels in the forward and
reverse directions causes a rocking motion
that could free the vehicle. If that does not
get the vehicle out after a few tries, it
might need to be towed out. If the vehicle
does need to be towed out, see
Towing the
Vehicle 0312.
Vehicle Load Limits
It is very important to know how much
weight the vehicle can carry. This
weight is called the vehicle capacity
weight and includes the weight of all
occupants, cargo, and all
nonfactory-installed options. Two labels
on the vehicle may show how much
weight it may properly carry, the Tire
and Loading Information label and the
Certification/Tire label.
{Warning
Do not load the vehicle any heavier
than the Gross Vehicle Weight Rating
(GVWR), or either the maximum
front or rear Gross Axle Weight
Rating (GAWR). This can cause
(Continued)
Warning (Continued)
systems to break and change the
way the vehicle handles. This could
cause loss of control and a crash.
Overloading can also reduce stopping
performance, damage the tires, and
shorten the life of the vehicle.
Tire and Loading Information Label
Example Label
A vehicle-specific Tire and Loading
Information label is attached to the
center pillar (B-pillar). The tire and
loading information label shows the

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
Driving and Operating 201
number of occupant seating
positions (1), and the maximum vehicle
capacity weight (2) in kilograms and
pounds.
The Tire and Loading Information label
also shows the size of the original
equipment tires (3) and the
recommended cold tire inflation
pressures (4). For more information on
tires and inflation seeTires0285 and
Tire Pressure 0291.
There is also important loading
information on the vehicle Certification/
Tire label. It may show the Gross
Vehicle Weight Rating (GVWR) and the
Gross Axle Weight Rating (GAWR) for
the front and rear axle. See
“Certification/Tire Label” later in this
section.
“Steps for Determining Correct Load Limit–
1.
Locate the statement "The combined
weight of occupants and cargo
should never exceed XXX kg or
XXX lbs." on your vehicle’s placard.
2.Determine the combined weight of
the driver and passengers that will
be riding in your vehicle.
3.Subtract the combined weight of the
driver and passengers from XXX kg
or XXX lbs.
4.The resulting figure equals the
available amount of cargo and
luggage load capacity. For example,
if the "XXX" amount equals 1400 lbs.
and there will be five 150 lb
passengers in your vehicle, the
amount of available cargo and
luggage load capacity is 650 lbs.
(1400-750 (5 x 150) = 650 lbs.)
5.Determine the combined weight of
luggage and cargo being loaded on
the vehicle. That weight may not
safely exceed the available cargo and
luggage load capacity calculated in
Step 4.
6.If your vehicle will be towing a
trailer, load from your trailer will be
transferred to your vehicle. Consult
this manual to determine how this reduces the available cargo and
luggage load capacity of your
vehicle.”
See Trailer Towing 0249 for important
information on towing a trailer, towing
safety rules and trailering tips.
Example 1
1.Vehicle Capacity Weight for
Example 1 = 453 kg (1,000 lbs).
2.Subtract Occupant Weight @
68 kg (150 lbs) × 2 = 136 kg
(300 lbs).
3.Available Occupant and Cargo
Weight = 317 kg (700 lbs).

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
208 Driving and Operating
Leaving the Vehicle with the Engine
Running
{Warning
It can be dangerous to leave the vehicle
with the engine running. It could
overheat and catch fire.
It is dangerous to get out of the vehicle
if the vehicle is not in P (Park) with the
parking brake set. The vehicle can roll.
Do not leave the vehicle when the engine
is running. If you have left the engine
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when you are on fairly level ground,
always set the parking brake and shift to
P (Park). SeeShifting Into Park 0207.
If you are towing a trailer, see Driving
Characteristics and Towing Tips 0246.
If you have to leave the vehicle with the
engine running, be sure the vehicle is in
P (Park) and the parking brake is set before
you leave it. After you have pressed the
P (Park) button, hold down the brake pedal. If you cannot see the P (Park) indicator in
the instrument cluster, it means that the
vehicle is not in P (Park).
If you are towing a trailer and parking on a
hill, see
Driving Characteristics and Towing
Tips 0246.
Shifting out of Park
This vehicle is equipped with an electronic
transmission. The shift lock release button is
designed to prevent inadvertent shifting out
of P (Park) unless the ignition is in on, the
brake pedal is applied, and the shift lock
release button is pressed.
The shift lock control is always functional
except in the case of an uncharged or low
voltage (less than 9-volt) battery.
If the vehicle has an uncharged battery or a
battery with low voltage, try charging or
jump starting the battery. See Jump Starting
- North America 0309.
To shift out of P (Park):
1. Ensure the engine is running.
2. Apply the brake pedal.
3. Press and hold the shift lock release button.
4. Move the shift lever to the desired position.
5. The P indicator will turn white and the gear indicator on the shift lever will turn
red when the vehicle is no longer in
P (Park).
6. After releasing the shift lever, it will return to the center position.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14637843) - 2021 - CRC - 12/9/20
210 Driving and Operating
If parking on a hill and pulling a trailer, see
Driving Characteristics and Towing Tips
0246.
Automatic Transmission
The shift pattern is displayed in the top of
the shift lever. The selected gear position
will illuminate red on the shift lever, while
all others will be displayed in white. If the
shift is not immediate, as in very cold
conditions, the indicator on the shift lever
may flash until it is fully engaged.
The shift lever always starts from a center
position, represented by an amber dot on
the shift pattern. After releasing the shift
lever, it will return to the center position. The transmission does not operate when the
vehicle is off.
If the vehicle is in ACC/ACCESSORY, the
transmission can be shifted into P (Park).
If the ignition is turned off while at a
relatively high vehicle speed, the
transmission will automatically shift to
N (Neutral). Once the vehicle is stopped,
P (Park) can be selected.
P :
This position locks the drive wheels. Use
P (Park) when starting the engine because
the vehicle cannot move easily.
{Warning
It is dangerous to get out of the vehicle
if the transmission is not in P (Park) with
the parking brake set. The vehicle
can roll.
Do not leave the vehicle when the engine
is running. If the engine has been left
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when on fairly level ground, always set
the parking brake and place the
transmission into P (Park). See Shifting
Into Park 0207 and
Driving Characteristics and Towing Tips
0 246.