Page 273 of 398

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
272 Vehicle Care
1.Engine Air Cleaner/Filter 0276.
2. Engine Oil Fill Cap. See Engine Oil 0272.
3. Engine Oil Dipstick. See Engine Oil 0272.
4. Engine Cooling Fan (Out of View). See Cooling System
0 277.
5. Brake Fluid Reservoir. See Brake Fluid 0283.
6. Battery - North America 0284.
7. Engine Coolant Surge Tank and Pressure Cap. See
Cooling System 0277.
8. Positive (+) Battery Terminal. See Jump Starting - North
America 0328.
9. Windshield Washer Fluid Reservoir. See Washer Fluid
0 281.
10. Engine Compartment Fuse
Block 0291.
11. Remote Negative (-) Battery Terminal. See Jump Starting -
North America 0328.Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
. Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0274.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0271 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center
(DIC) message displays, check the
oil level.
Follow these guidelines:
. To get an accurate reading, park
the vehicle on level ground.
Check the engine oil level after
the engine has been off for at
least two hours. Checking the
engine oil level on steep grades
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when
Page 280 of 398

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
Vehicle Care 279
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
{Warning
Spilling coolant on hot engine
parts can burn you. Coolant
contains ethylene glycol and it will
burn if the engine parts are hot
enough.
Caution
Failure to follow the specific
coolant fill procedure could cause
the engine to overheat and could
cause system damage. If coolant
is not visible in the surge tank,
contact your dealer.
If no problem is found, check to see
if coolant is visible in the coolant
surge tank. If coolant is visible but
the coolant level is not at the
indicated level mark, add a 50/
50 mixture of clean, drinkable water
and DEX-COOL coolant at the
coolant surge tank, but be sure the
cooling system, including the
coolant surge tank pressure cap, is
cool before you do it.
1. Remove the coolant surge tank pressure cap when the cooling
system, including the coolant
surge tank pressure cap and
upper radiator hose, is no
longer hot.
Turn the pressure cap slowly
counterclockwise about
one-quarter of a turn. If you
hear a hiss, wait for that to
stop. This will allow any
pressure still left to be vented
out the discharge hose.
2. Keep turning the pressure cap slowly and remove it.
Page 291 of 398

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
290 Vehicle Care
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.
6. Turn the lamp assembly into the lamp assembly opening
engaging the clip side first.
7. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Page 292 of 398

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
Vehicle Care 291
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
{Danger
Fuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit
breakers. Use of an oversized
fuse or circuit breaker can result
in a vehicle fire. You and others
could be seriously injured or
killed.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating. Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
Engine Compartment
Fuse Block
Caution
Do not pull the engine
compartment fuse block lever,
since it is intended only for
service purposes. If pulled,
vehicle malfunction may occur.
To remove the fuse block cover,
press the clips on the cover and lift
it straight up.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
To remove fuses, use the fuse puller
and pull straight out.
Page 293 of 398
Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
292 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F1 Antilock brake system pump Fuses 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 –
Page 294 of 398

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
Vehicle Care 293
FusesUsage
F20 –
F21 –
F22 Electronic brake control module
F23 Parking/Trailer lamps
F24 Right trailer stoplamp/Turn
signal lamp
F25 Steering column lock
F26 –
F27 Left trailer stoplamp/Turn
signal lamp
F28 –
F29 –
F30 Washer pump
F31 –
F32 Left low-beam headlamp
F33 Front fog lamps Fuses
Usage
F34 Horn
F35 –
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 – 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
Page 295 of 398
Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
294 Vehicle Care
FusesUsage
F60 Engine control module–even
F61 O2 sensor 1/MAF
F62 –
F63 O2 sensor 2/ Canister/Engine oil/
Turbo
F64 Aeroshutter
F65 Engine control module
powertrain 1
F66 Engine control module
powertrain 2
F67 Engine control module–odd
F68 –
F69 –
F70 –
F71 –
F72 –
F73 – Fuses
Usage
F74 –
F75 –
F76 –
F77 –
Relays Usage
K1 Starter 1
K2 Run/Crank
K3 Vacuum pump
K4 –
K5 Air conditioning
K6 Coolant pump
K7 Engine control module
K8 Folding seats
K9 –
K10 Starter 2Instrument Panel Fuse
Block
The instrument panel fuse block is
inside the center console on the
passenger side of the vehicle.
Remove the fuse access door by
pulling the door at the opening.
To remove a fuse, use the fuse
puller in the engine compartment
fuse block.
Page 296 of 398
Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146155) - 2019 - crc - 9/10/18
Vehicle Care 295
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
F1 Body control module 6
F2 Diagnostic link
F3 Electric steering column lock
F4 Rear USB port
F5 –
F6 Heating, ventilation, and air
conditioning
F7 Body control module 3
F8 –
F9 Right front heated seat
F10 Airbag
F11 Electronic precision shift
F12 Amplifier
F13 Body control module 7 Fuses Usage
F14 Left front heated seat
F15 –
F16 Sunroof
F17 Communication gateway module
F18 Instrument cluster
F19 Body control module 1
F20 Wireless charger module
F21 Body control module 4
F22 Infotainment
F23 Body control module 2
F24 –
F25 Park assist
F26 Communications integration module
F27 Video