2020 BUICK ENCLAVE check engine light

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Instruments and Controls 129This light should come on briefly as
the engine is started. If it does not
come on, have the vehicle serviced
by your dealer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might have
some other system problem. See
your dealer.
Low Fuel Warning Light
This light is near the fuel gauge and
comes on briefly when the ignition is
turned on as a check to show it is
working.
It also comes on when the fuel tank
is low on fuel. The light turns off
when fuel is added. If it does not,
have the vehicle serviced. Security Light The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle
serviced by your dealer. If the
system is working normally, the
indicator light turns off.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. See Immobilizer Operation
0 29 .
High-Beam On Light This light comes on when the
high-beam headlamps are in use.
See Headlamp High/Low-Beam
Changer 0 148 .
IntelliBeam Light
This light comes on when the
IntelliBeam system, if equipped, is
enabled. See Exterior Lamp
Controls 0 146 .
Lamps On Reminder

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
174 Driving and Operating
{ WarningWet brakes can cause crashes.
They might not work as well in a
quick stop and could cause
pulling to one side. You could
lose control of the vehicle.
After driving through a large
puddle of water or a car/vehicle
wash, lightly apply the brake
pedal until the brakes work
normally.
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be
very cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water
can build up under the vehicle's
tires so they actually ride on the
water. This can happen if the road is wet enough and you are going fast
enough. When the vehicle is
hydroplaning, it has little or no
contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips Besides slowing down, other wet
weather driving tips include:
.
Allow extra following distance.
.
Pass with caution.
.
Keep windshield wiping
equipment in good shape.
.
Keep the windshield washer fluid
reservoir filled.
.
Have good tires with proper
tread depth. See Tires 0 281 .
.
Turn off cruise control.
.
Activate All-Wheel Drive (AWD)
mode. See Driver Mode Control
0 202 . Hill and Mountain Roads Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips include:
.
Keep the vehicle serviced and in
good shape.
.
Check all fluid levels and brakes,
tires, cooling system, and
transmission.
.
Shift to a lower gear when going
down steep or long hills.
{ WarningUsing the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
198 Driving and Operating ABS does not change the time
needed to get a foot on the brake
pedal and does not always
decrease stopping distance. If you
get too close to the vehicle ahead,
there will not be enough time to
apply the brakes if that vehicle
suddenly slows or stops. Always
leave enough room ahead to stop,
even with ABS.
Using ABS Do not pump the brakes. Just hold
the brake pedal down firmly.
Hearing or feeling ABS operate is
normal.
Braking in Emergencies ABS allows steering and braking at
the same time. In many
emergencies, steering can help
even more than braking. Electric Parking Brake
The vehicle has an Electric Parking
Brake (EPB). The EPB can always
be activated, even if the ignition is
off. To prevent draining the battery,
avoid repeated cycles of the EPB
system when the engine is not
running.
The system has a
Y or PARK
Electric Parking Brake light,
and a
8 Service Parking Brake
light. See Electric Parking Brake
Light 0 124 and
Service Electric Parking Brake Light
0 125 . Before leaving the vehicle, check for
the
Y or PARK light to ensure that
the parking brake is applied.
EPB Apply To apply the EPB:
1. Be sure the vehicle is at a
complete stop.
2. Press the EPB switch
momentarily.
The
Y or PARK light will flash and
then stay on once the EPB is fully
applied. If the
Y or PARK light
flashes continuously, then the EPB
is only partially applied or there is a
problem with the EPB. A DIC
message will display. Release the
EPB and try to apply it again. If the
light does not come on, or keeps
flashing, have the vehicle serviced.
Do not drive the vehicle if the
Y or
PARK light is flashing. See your
dealer. See Electric Parking Brake
Light 0 124 .

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
Driving and Operating 201vehicle wheel brakes to assist the
driver in keeping the vehicle on the
intended path.
If cruise control is being used and
TCS or StabiliTrak/ESC begins to
limit wheel spin, cruise control will
disengage. Cruise control may be
turned back on when road
conditions allow. TCS and
StabiliTrak/ESC will automatically
turn on when cruise control is set.
Both systems come on
automatically when the vehicle is
started and begins to move. The
systems may be heard or felt while
they are operating or while
performing diagnostic checks. This
is normal and does not mean there
is a problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary
to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow.
See If the Vehicle Is Stuck 0 176
and “ Turning the Systems Off and
On ” later in this section. The indicator light for both systems
is in the instrument cluster. This
light will:
.
Flash when TCS is limiting
wheel spin.
.
Flash when StabiliTrak/ESC is
activated.
.
Turn on and stay on when either
system is not working.
If either system fails to turn on or to
activate, a message displays in the
Driver Information Center (DIC), and
d comes on and stays on to
indicate that the system is inactive
and is not assisting the driver in
maintaining control. The vehicle is
safe to drive, but driving should be
adjusted accordingly.
If
d comes on and stays on:
1. Stop the vehicle. 2. Turn the engine off and wait
15 seconds.
3. Start the engine.
4. Drive the vehicle.
If
d comes on and stays on, see
your dealer.
Turning the Systems Off
and On

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
244 Driving and Operating Trailer Lamps Always check all trailer lamps are
working at the beginning of each
trip, and periodically on longer trips.
Turn Signals When Towing a
Trailer When properly connected, the trailer
turn signals will illuminate to indicate
the vehicle is turning, changing
lanes, or stopping. When towing a
trailer, the arrows on the instrument
cluster will illuminate even if the
trailer is not properly connected or
the bulbs are burned out.
Tow/Haul Mode For instructions on how to enter
Tow/Haul mode, see Driver Mode
Control 0 202 .
Tow/Haul assists when pulling a
heavy trailer or a large or heavy
load. See Tow/Haul Mode 0 196 .
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 0 238 .
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 0 200 .

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527524) - 2020 - CRC - 4/10/19
246 Driving and Operating
Conversions and
Add-Ons Add-On Electrical
Equipment
{ WarningThe Data Link Connector (DLC) is
used for vehicle service
and Emission Inspection/
Maintenance testing. See
Malfunction Indicator Lamp
(Check Engine Light) 0 122 .
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. CautionSome 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 0 72 and
Adding Equipment to the
Airbag-Equipped Vehicle 0 72 .

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
Vehicle Care 265Replacing Brake System Parts Always replace brake system parts
with new, approved replacement
parts. If this is not done, the brakes
may not work properly. The braking
performance expected can change
in many other ways if the wrong
replacement brake parts are
installed or if parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir
is filled with GM approved DOT 3
brake fluid as indicated on the
reservoir cap. See Engine
Compartment Overview 0 252 for
the location of the reservoir. Checking Brake Fluid
With the vehicle in P (Park) on a
level surface, the brake fluid level
should be between the minimum
and maximum marks on the brake
fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
.
Normal brake lining wear. When
new linings are installed, the
fluid level goes back up.
.
A fluid leak in the brake
hydraulic system. Have the
brake hydraulic system fixed.
With a leak, the brakes will not
work well.
Always clean the brake fluid
reservoir cap and the area around
the cap before removing it.
Do not top off the brake fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are installed. Add or remove fluid, as
necessary, only when work is done
on the brake hydraulic system.
{ WarningIf 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 0 124 .
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 0 328 .