engine overheat BUICK ENCLAVE 2018 User Guide

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 273
1. Engine Cooling Fan (Outof View)
2. Engine Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. This coolant needs to be
checked and replaced at
appropriate intervals. See
Maintenance Schedule 0341.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0276.
What to Use
{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.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
. Gives freezing protection down
to−37 °C (−34 °F), outside
temperature.
. Gives boiling protection up to
129 °C (265 °F), engine
temperature
. Protects against rust and
corrosion.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
274 Vehicle Care
.Will not damage aluminum parts.
. Helps keep the proper engine
temperature.
Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard
GMW3420 and clean, drinkable
water. Anything else can cause
damage to the engine cooling
system and the vehicle, which
would not be covered by the
vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant
changed by an authorized service
center, familiar with legal
requirements regarding used
coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible
but the coolant level mark is not
visible, add a 50/50 mixture of
clean, drinkable water and
DEX-COOL coolant at the coolant
surge tank to the top rib on the
middle of the tank, but be sure the cooling system is cool before this is
done. See
Engine Overheating
0 276.
The coolant surge tank is located in
the engine compartment on the
driver side of the vehicle. See
Engine Compartment Overview
0 267.
How to Add Coolant to the
Coolant Surge Tank
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 275
{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.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
276 Vehicle Care
3. Fill the coolant surge tank withthe proper mixture to the
indicated level mark.
4. With the coolant surge tank pressure cap off, start the
engine and let it run until you
can feel the upper radiator
hose getting hot. Watch out for
the engine cooling fan.
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge
tank until the level reaches the
indicated level mark.
5. Replace the pressure cap tightly.
6. Verify coolant level after the engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1–6.
If the coolant still is not at the
proper level when the system
cools down again, see your
dealer.Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.
Engine Overheating
The vehicle has several indicators
to warn of the engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. See Engine
Coolant Temperature Gauge 0137.
The vehicle may also display a
message on the Driver Information
Center (DIC).
If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Assistance Program
0 359.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface. Then
check to see if the engine cooling fan is running. If the engine is
overheating, the fan should be
running. If it is not, do not continue
to run the engine. Have the vehicle
serviced.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
(Continued)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 277
Warning (Continued)
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
. Stops after high-speed driving.
. Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the
highest fan speed. Open the
windows as necessary. 3. When it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the
overheated area, the vehicle can be
driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a
safe distance from the vehicle in
front. If the warning does not come
back on, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Washer Fluid
What to Use
When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview 0267 for
reservoir location.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
384 Index
Electrical SystemEngine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 287
Fuses and Circuit Breakers . . . 286
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Overload . . . . . . . . . . . . . . . . . . . . . 286
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 292
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 370
Engine Air Cleaner/Filter . . . . . . . . . . . . . 272
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 140
Compartment Overview . . . . . . . 267
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 137
Cooling System . . . . . . . . . . . . . . . 272
Drive Belt Routing . . . . . . . . . . . . 354
Exhaust . . . . . . . . . . . . . . . . . . . . . . 209
Heater . . . . . . . . . . . . . . . . . . . . . . . . 204
Oil Life System . . . . . . . . . . . . . . . 270
Oil Pressure Light . . . . . . . . . . . . 145
Overheating . . . . . . . . . . . . . . . . . . 276
Power Messages . . . . . . . . . . . . . 154
Running While Parked . . . . . . . . 210
Starting . . . . . . . . . . . . . . . . . . . . . . . 202 Entry Lighting . . . . . . . . . . . . . . . . . . . 172
Equipment, Towing . . . . . . . . . . . . . 259
Event Data Recorders . . . . . . . . . . 367
Exit Lighting . . . . . . . . . . . . . . . . . . . . 173
Extended Parking . . . . . . . . . . . . . . . 208
Extender, Seat Belt . . . . . . . . . . . . . . 81
Exterior Lamp Controls . . . . . . . . . 166
Exterior Lamps Off Reminder . . . 168
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 174
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 272
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 168
Flashers, Hazard Warning . . . . . . 170
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 315
Changing . . . . . . . . . . . . . . . . . . . . . 317
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 338
Fluid
Automatic Transmission . . . . . . 271
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 279
Washer . . . . . . . . . . . . . . . . . . . . . . . 277
Folding Mirrors . . . . . . . . . . . . . . . . . . 51
Forward Automatic Braking . . . . . 241 Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 239
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 365
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . 243
Front Seats
Heated and Ventilated . . . . . . . . . . 68
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 Additives . . . . . . . . . . . . . . . . . . . . . 250
Economy Driving . . . . . . . . . . . . . . . 28
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 252
Filling the Tank . . . . . . . . . . . . . . . 250
Foreign Countries . . . . . . . . . . . . 250
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 136
Low Fuel Warning Light . . . . . . . 146
Requirements, California . . . . . 250
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 287
Fuses and Circuit Breakers . . . 286
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 292

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Index 387
MessagesEngine Power . . . . . . . . . . . . . . . . 154
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 153
Vehicle Speed . . . . . . . . . . . . . . . . 154
Mirror Rear Camera . . . . . . . . . . . . . . . . . . . 53
Mirrors
Automatic Dimming . . . . . . . . . . . . . 52
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 53
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 51
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 51
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 52
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Tilt in Reverse . . . . . . . . . . . . . . . . . . 52
Mirrors, Interior Rearview . . . . . . . . 53
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Driver Control . . . . . . . . . . . . . . . . . 222
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 303
N
NavigationOnStar . . . . . . . . . . . . . . . . . . . . . . . 371
New Vehicle Break-In . . . . . . . . . . . 200
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 135 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 188 Driving . . . . . . . . . . . . . . . . . . . . . . . . 188
Recovery . . . . . . . . . . . . . . . . . . . . . 187
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 268
Engine Oil Life System . . . . . . . 270
Pressure Light . . . . . . . . . . . . . . . . 145
Older Children, Restraints . . . . . . . 96
Online Owner Center . . . . . . . . . . . 358
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 368
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 375
OnStar Connections . . . . . . . . . . . . 372
OnStar Diagnostics . . . . . . . . . . . . . 374
OnStar Emergency . . . . . . . . . . . . . 370
OnStar Navigation . . . . . . . . . . . . . . 371
OnStar Overview . . . . . . . . . . . . . . . 369
OnStar Security . . . . . . . . . . . . . . . . 371
Ordering Service Publications . . . . . . . . . . 364
Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . 127
Overheating, Engine . . . . . . . . . . . . 276
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 205
Shifting Out of . . . . . . . . . . . . . . . . 206
Parking
Brake and P (Park)Mechanism Check . . . . . . . . . . 281
Extended . . . . . . . . . . . . . . . . . . . . . 208
Over Things That Burn . . . . . . . 208
Parking Assist . . . . . . . . . . . . . . . . . . 235
Parking or Backing
Assistance Systems . . . . . . . . . . 235
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 139
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Passenger Sensing System . . . . . 90
Pedestrian Ahead Indicator . . . . . 144
Perchlorate Materials Requirements, California . . . . . . 265
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 154
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 40
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Outlets . . . . . . . . . . . . . . . . . . . . . . . 127
Protection, Battery . . . . . . . . . . . . 173
Retained Accessory (RAP) . . . 205