automatic transmission BUICK ENCLAVE 2020 User Guide

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
196 Driving and Operating
Manual Mode Electronic Range Select (ERS)
CautionDriving with the engine at a high
rpm without upshifting while using
Manual Mode, could damage the
vehicle. Always upshift when
necessary while using
Manual Mode.
Electronic Range Select (ERS),
or Manual Mode, allows for the
selection of the range of gear positions. Use this mode when
driving downhill or towing a trailer to
limit the top gear and vehicle speed.
The shift position indicator within the
Driver Information Center (DIC) will
display a number next to the L
indicating the highest available gear.
To enter Electronic Range Select or
Manual Mode:
1. With the vehicle in D (Drive),
pull back on the shift lever to
activate L (Low). The L in the
shift pattern will illuminate in
red, and the D will switch to
white.
2. Tap the left steering wheel
control to reduce the highest
gear available, or the right
control to increase the highest
gear available.
3. To exit, pull back on the shift
lever a second time. The D in
the shift pattern will illuminate
in red, and the L will switch to
white.
When shifting to L (Low), the
transmission will shift to a preset
lower gear range. For this preset range, the highest gear available
will be displayed next to the L in the
DIC. All gears below that number
are available to use. For example,
when 4 (Fourth) is shown next to
the L, 1 (First) through 4 (Fourth)
gears are shifted automatically. To
shift to 5 (Fifth) gear, tap the right
steering wheel control or shift into D
(Drive).
L (Low) will prevent shifting to a
lower gear range if the engine
speed is too high. If the vehicle
speed is not reduced within the time
allowed, the lower gear range shift
will not be completed. Slow the
vehicle, then tap the left steering
wheel control to the desired lower
gear range.
Cruise control can be used while
in ERS.
Tow/Haul Mode This feature can assist when towing
or hauling a heavy load. To activate
Tow/Haul Mode, see Driver Mode
Control 0 202 .

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Driving and Operating 235Warning (Continued)trailer brakes are inadequate for
the load, the vehicle may not stop
as expected. You and others
could be seriously injured. The
vehicle may also be damaged,
and the 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.
Driving with a Trailer 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 your safety and that of
your passengers. Read this section
carefully before pulling a trailer.
When towing a trailer:
.
Become familiar with and follow
all state and local laws that
apply to trailer towing. These
requirements vary from state to
state.
.
State laws may require the use
of extended side view mirrors.
Even if not required, you should
install extended side view
mirrors if your visibility is limited
or restricted while towing.
.
Do not tow a trailer during the
first 800 km (500 mi) of vehicle
use to prevent damage to the
engine, axle, or other parts.
.
It is recommended to perform
the first oil change before heavy
towing.
.
During the first 800 km (500 mi)
of trailer towing, do not drive
over 80 km/h (50 mph) and do
not make starts at full throttle. .
Vehicles can tow in D (Drive).
Tow/Haul Mode is recommended
for heavier trailers. See Tow/
Haul Mode 0 196 . If the
transmission downshifts too
often, a lower gear may be
selected using Manual Mode
See Manual Mode 0 196 .
If equipped, the following driver
assistance features should be
turned off when towing a trailer:
.
Adaptive Cruise Control (ACC)
.
Super Cruise Control
.
Lane Keep Assist (LKA)
.
Park Assist
.
Automatic Parking Assist (APA)
.
Reverse Automatic
Braking (RAB)
If equipped, the following driver
assistance features should be
turned to alert or off when towing a
trailer:
.
Automatic Emergency
Braking (AEB)
.
Intelligent Brake Assist (IBA)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Vehicle Care 247
Vehicle Care General Information General Information . . . . . . . . . . 248
California Proposition
65 Warning . . . . . . . . . . . . . . . . . 248
California Perchlorate
Materials Requirements . . . . . 249
Accessories and
Modifications . . . . . . . . . . . . . . . . 249
Vehicle Checks Doing Your Own
Service Work . . . . . . . . . . . . . . . 249
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Compartment
Overview . . . . . . . . . . . . . . . . . . . . 252
Engine Oil . . . . . . . . . . . . . . . . . . . . 253
Engine Oil Life System . . . . . . . 255
Automatic Transmission
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 256
Engine Air Filter Life
System . . . . . . . . . . . . . . . . . . . . . . 257
Engine Air Cleaner/Filter . . . . . . 257
Cooling System . . . . . . . . . . . . . . 258
Engine Overheating . . . . . . . . . . 262
Washer Fluid . . . . . . . . . . . . . . . . . 263
Brakes . . . . . . . . . . . . . . . . . . . . . . . 264
Brake Fluid . . . . . . . . . . . . . . . . . . . 265 Battery - North America . . . . . . 266
All-Wheel Drive . . . . . . . . . . . . . . . 267
Starter Switch Check . . . . . . . . . 267
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . 267
Wiper Blade Replacement . . . . 268
Windshield Replacement . . . . . 269
Gas Strut(s) . . . . . . . . . . . . . . . . . . 269
Headlamp Aiming Headlamp Aiming . . . . . . . . . . . . 271
Bulb Replacement Bulb Replacement . . . . . . . . . . . . 271
LED Lighting . . . . . . . . . . . . . . . . . 271
License Plate Lamp . . . . . . . . . . 271
Electrical System High Voltage Devices and
Wiring . . . . . . . . . . . . . . . . . . . . . . . 272
Electrical System Overload . . . 272
Fuses and Circuit Breakers . . . 273
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 273
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 277
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 278
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 281
All-Season Tires . . . . . . . . . . . . . . 282 Winter Tires . . . . . . . . . . . . . . . . . . 282
Tire Sidewall Labeling . . . . . . . . 283
Tire Designations . . . . . . . . . . . . . 285
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . 285
Tire Pressure . . . . . . . . . . . . . . . . . 288
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 289
Tire Pressure Monitor
System . . . . . . . . . . . . . . . . . . . . . . 290
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . . 291
Tire Inspection . . . . . . . . . . . . . . . . 295
Tire Rotation . . . . . . . . . . . . . . . . . 295
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . 296
Buying New Tires . . . . . . . . . . . . . 297
Different Size Tires and
Wheels . . . . . . . . . . . . . . . . . . . . . . 298
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 299
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . 300
Wheel Replacement . . . . . . . . . . 301
Tire Chains . . . . . . . . . . . . . . . . . . . 301
If a Tire Goes Flat . . . . . . . . . . . . 302
Tire Changing . . . . . . . . . . . . . . . . 304
Compact Spare Tire . . . . . . . . . . 309

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
256 Vehicle Care 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) 0 130 or
Driver Information Center (DIC)
(Uplevel) 0 133 .
2. Press and hold
V on 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
0 328 , and be sure to use the
transmission fluid listed in
Recommended Fluids and
Lubricants 0 337 .
CautionUse of the incorrect automatic
transmission fluid may damage
the vehicle, and the damage may
not be covered by the vehicle
warranty. Always use the correct
automatic transmission fluid. See
Recommended Fluids and
Lubricants 0 337 .
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.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Vehicle Care 275Fuses Usage
F2 Starter 1
F3 DC DC
transformer 1
F4 –
F5 DC DC
transformer 2
F6 –
F7 –
F8 –
F9 Vacuum pump
F10 Front wiper
F11 –
F12 –
F13 Starter 2
F14 –
F15 Rear wiper
F16 –
F17 –
F18 –
F19 – Fuses Usage
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
F39 Transmission
control module
F40 Left rear bus
electrical center/
Ignition
F41 Instrument cluster
F42 Heating,
ventilation, and air
conditioning
F43 Head-up display
F44 Communication
gateway module/
Run/Crank
F45 –
F46 –
F47 –
F48 –

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
286 Vehicle Care 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.
Bias Ply Tire :
A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread. Cold Tire Pressure :
The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
0 288 .
Curb Weight :
The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil,
and coolant, but without
passengers and cargo.
DOT Markings :
A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production. GVWR :
Gross Vehicle Weight
Rating. See Vehicle Load Limits
0 177 .
GAWR FRT :
Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0 177 .
GAWR RR :
Gross Axle Weight
Rating for the rear axle. See
Vehicle Load Limits 0 177 .
Intended Outboard Sidewall :
The side of an asymmetrical tire
that must always face outward
when mounted on a vehicle.
Kilopascal (kPa) :
The metric
unit for air pressure.
Light Truck (LT-Metric) Tire :
A
tire used on light duty trucks and
some multipurpose passenger
vehicles.
Load Index :
An assigned
number ranging from 1 to 279
that corresponds to the load
carrying capacity of a tire.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Vehicle Care 303Warning (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.
{ WarningLifting 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 0 150 .
{ WarningChanging 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 automatic
transmission 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) Warning (Continued) 5. Place wheel blocks,
if equipped, on both sides of
the tire at the opposite
corner of the tire being
changed.
When the vehicle has a flat tire (2),
use the following example as a
guide to assist in the placement of
the wheel blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains
how to repair or change a tire.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
312 Vehicle Care 3. Good Battery Negative (-)
Terminal
4. Good Battery Positive (+)
Terminal
The jump start positive (+)
Terminal (1) and the negative
remote negative terminal (2) for the
discharged battery are on the driver
side of the vehicle.
The jump start positive (+)
terminal (4) and negative (-)
terminal (3) are on the battery of the
vehicle providing the jump start.
The positive jump start connection
for the discharged battery is under a
cover. Remove the cover to expose
the terminal.
1. Check the other vehicle.
It must have a 12-volt battery
with a negative ground system.
Caution
If the other vehicle does not have
a 12-volt system with a negative
ground, both vehicles can be
(Continued) Caution (Continued) damaged. Only use a vehicle that
has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so
that they are not touching.
3. Set the parking brake firmly
and put the shift lever in
P (Park) with an automatic
transmission, or Neutral with a
manual transmission. See
Shifting Into Park 0 186 .
CautionIf any accessories are left on or
plugged in during the jump
starting procedure, they could be
damaged. The repairs would not
be covered by the vehicle
warranty. Whenever possible, turn
off or unplug all accessories on
either vehicle when jump starting. 4. Turn the ignition off. Turn off all
lights and accessories in both
vehicles, except the hazard
warning flashers if needed.
{ WarningAn electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.
{ WarningUsing a match near a battery can
cause battery gas to explode.
People have been hurt doing this,
and some have been blinded.
Use a flashlight if you need more
light.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Service and Maintenance 329.
Check engine coolant level. See
Cooling System 0 258 .
.
Check windshield washer fluid
level. See Washer Fluid 0 263 .
.
Check tire inflation pressures.
See Tire Pressure 0 288 .
.
Inspect tire wear. See Tire
Inspection 0 295 .
.
Visually check for fluid leaks.
.
Inspect brake system. See
Exterior Care 0 317 .
.
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 Care
0 317 .
.
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 0 60 .
.
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 0 317 .
.
Check starter switch. See Starter
Switch Check 0 267 . .
Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check
0 267 .
.
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)
0 269 .
.
Inspect sunroof track and seal,
if equipped. See Sunroof 0 37 .

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
332 Service and Maintenance Maintenance Schedule
Additional Required
Services - Severe
12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 miRotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed. Check
engine air filter life percentage and status.
Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @Replace passenger compartment air filter. (1)
@ @ @ @ @ @Inspect evaporative control system. (2)
@ @ @If the vehicle is not equipped with the engine air
filter life system, replace engine air cleaner
filter. (3)
@ @ @Change automatic transmission fluid.
@ @ @Replace spark plugs. Inspect spark plug wires.
@Change rear axle fluid, if equipped with AWD. (4)
@ @Drain and fill engine cooling system. (5)
@Visually inspect accessory drive belts. (6)
@Replace brake fluid. (7)
Replace windshield wiper blades. (8)
@ @ @ @ @ @ @ @ @ @Replace hood and/or body lift support gas
struts. (9)
@ @Replace air conditioning desiccant. (10)