2018 BUICK ENVISION coolant temperature

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Vehicle Care 247
SeeMaintenance Schedule 0312
for replacement intervals.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when driving.
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
2.0L L4 Engine
1. Engine Cooling Fan (Out
of View)
2. Engine Coolant Surge Tank and Pressure Cap
2.5L L4 Engine
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.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
248 Vehicle Care
{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.
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant. This coolant is designed to
remain in the vehicle for 5 years or
240 000 km (150,000 mi), whichever
occurs first.
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 0250.
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. 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.
. 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 pouring it 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.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
250 Vehicle Care
cooling system, including the
coolant surge tank pressure cap, is
cool before you do it.
1. Remove the coolant surge tankpressure 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.
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 fans.
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 an engine coolant
temperature gauge to warn of the
engine overheating. See Engine
Coolant Temperature Gauge 0122.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Vehicle Care 251
If the decision is made not to lift the
hood when this warning appears,
get service help right away.
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 fans are running. If the
engine is overheating, the fans
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,
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 overheat
zone, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
vehicle 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.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
252 Vehicle Care
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 the vehicle needs windshield
washer fluid, 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. SeeEngine
Compartment Overview 0238 for
reservoir location.
Caution
. Do not use washer fluid that
contains any type of water
repellent coating. This can
cause the wiper blades to
chatter or skip.
. Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
. Do not mix water with
ready-to-use washer fluid.
Water can cause the
solution to freeze and
damage the washer fluid
tank and other parts of the
washer system.
(Continued)
Caution (Continued)
.When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
. Fill the washer fluid tank
only three-quarters full when
it is very cold. This allows
for fluid expansion if
freezing occurs, which could
damage the tank if it is
completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or can
be heard all the time when the
vehicle is moving, except when
applying the brake pedal firmly.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Index 355
Child Restraints (cont'd)Systems . . . . . . . . . . . . . . . . . . . . . . . . 88
Circuit Breakers . . . . . . . . . . . . . . . . 262
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 301
Interior Care . . . . . . . . . . . . . . . . . . 305
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 163
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Cluster, Instrument . . . . . . . . . . . . . 117
Collision Damage Repair . . . . . . . 334
Compact Spare Tire . . . . . . . . . . . . 293
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 103
Compass . . . . . . . . . . . . . . . . . . . . . . . 113
Connections OnStar . . . . . . . . . . . . . . . . . . . . . . . 344
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 197
Control of a Vehicle . . . . . . . . . . . . . 173
Convenience Net . . . . . . . . . . . . . . . 107
Convex Mirrors . . . . . . . . . . . . . . . . . . 47
Coolant Engine Temperature Gauge . . 122
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 131 Cooling . . . . . . . . . . . . . . . . . . . . 163, 166
Cooling System . . . . . . . . . . . . . . . . . 247
Courtesy Lamps . . . . . . . . . . . . . . . . 159
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 333
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cruise Control . . . . . . . . . . . . . . . . . . 199 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Cruise Control, Adaptive . . . . . . . . 201
Cupholders . . . . . . . . . . . . . . . . . . . . . 103
Customer Assistance . . . . . . . . . . . 330 Offices . . . . . . . . . . . . . . . . . . . . . . . . 329
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 330
Customer Information
Service PublicationsOrdering Information . . . . . . . . 336
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 327
D
Damage Repair, Collision . . . . . . . 334
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 340
OnStar . . . . . . . . . . . . . . . . . . . . . . . 340
Data Recorders, Event . . . . . . . . . 339 Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 156
Defensive Driving . . . . . . . . . . . . . . . 172
Delayed Locking . . . . . . . . . . . . . . . . . 38
Diagnostics OnStar . . . . . . . . . . . . . . . . . . . . . . . 346
Distracted Driving . . . . . . . . . . . . . . . 172
Dome Lamps . . . . . . . . . . . . . . . . . . . 159
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 134
Delayed Locking . . . . . . . . . . . . . . . . 38
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Locks . . . . . . . . . . . . . . . . . . . . 38
Drive Belt Routing, Engine . . . . . . 326
Drive Systems All-Wheel Drive . . . . . . . . . . 194, 255
Driver Assistance Systems . . . . . 209
Driver Behavior . . . . . . . . . . . . . . . . . 171
Driver Information Center (DIC) . . . . . . . . . . . . . 134, 137
Driving
Assistance Systems . . . . . . . . . . 214
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 226
Defensive . . . . . . . . . . . . . . . . . . . . . 172
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 173
Environment . . . . . . . . . . . . . . . . . . 171
For Better Fuel Economy . . . . . . . 25

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
356 Index
Driving (cont'd)Hill and Mountain Roads . . . . . . 176
If the Vehicle is Stuck . . . . . . . . . 178
Loss of Control . . . . . . . . . . . . . . . 174
Off-Road Recovery . . . . . . . . . . . 174
Vehicle Load Limits . . . . . . . . . . . 178
Wet Roads . . . . . . . . . . . . . . . . . . . 175
Winter . . . . . . . . . . . . . . . . . . . . . . . . 176
Driving the Vehicle . . . . . . . . . . . . . . . . 3
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 163
E
Electric Parking Brake . . . . . . . . . . 195
Electric Parking Brake Light . . . . 128
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 233
Electrical System Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 262
Fuses and Circuit Breakers . . . 262
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 265
Overload . . . . . . . . . . . . . . . . . . . . . 261
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 266
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 342 Engine
Air Cleaner/Filter . . . . . . . . . . . . . 245
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 125
Compartment Overview . . . . . . . 238
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 122
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 131
Cooling System . . . . . . . . . . . . . . . 247
Drive Belt Routing . . . . . . . . . . . . 326
Exhaust . . . . . . . . . . . . . . . . . . . . . . 190
Heater . . . . . . . . . . . . . . . . . . . . . . . . 186
Oil Life System . . . . . . . . . . . . . . . 243
Oil Pressure Light . . . . . . . . . . . . 132
Overheating . . . . . . . . . . . . . . . . . . 250
Power Messages . . . . . . . . . . . . . 143
Running While Parked . . . . . . . . 190
Starting . . . . . . . . . . . . . . . . . . . . . . . 185
Entry Lighting . . . . . . . . . . . . . . . . . . . 160
Equipment, Towing . . . . . . . . . . . . . 232
Event Data Recorders . . . . . . . . . . 339
Exit Lighting . . . . . . . . . . . . . . . . . . . . 161
Extended Parking . . . . . . . . . . . . . . . 189
Extender, Seat Belt . . . . . . . . . . . . . . 70
Exterior Lamp Controls . . . . . . . . . 154
Exterior Lamps Off Reminder . . . 156 Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 161
F
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 245
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 156
Flashers, Hazard Warning . . . . . . 158
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 287 Changing . . . . . . . . . . . . . . . . . . . . . 288
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 309
Fluid Automatic Transmission . . . . . . 244
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 253
Washer . . . . . . . . . . . . . . . . . . . . . . . 252
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 159
Folding Mirrors . . . . . . . . . . . . . . . . . . 48
Forward Automatic Braking . . . . . 217
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 214
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 337
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Front Seats Heated and Ventilated . . . . . . . . . . 60

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Index 357
Front Storage . . . . . . . . . . . . . . . . . . . 103
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223Additives . . . . . . . . . . . . . . . . . . . . . 224
Economy Driving . . . . . . . . . . . . . . . 25
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 226
Filling the Tank . . . . . . . . . . . . . . . 224
Foreign Countries . . . . . . . . . . . . 224
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 121
Low Fuel Warning Light . . . . . . . 132
Requirements, California . . . . . 224
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 262
Fuses and Circuit Breakers . . . 262
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 265
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 266
G
Garage Door Opener . . . . . . . . . . . 150Programming . . . . . . . . . . . . . . . . . 150
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 259
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 122
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Gauges (cont'd)
Odometer . . . . . . . . . . . . . . . . . . . . . 120
Speedometer . . . . . . . . . . . . . . . . . 120
Tachometer . . . . . . . . . . . . . . . . . . . 120
Trip Odometer . . . . . . . . . . . . . . . . 120
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . .116
General Information Service and Maintenance . . . . . 310
Towing . . . . . . . . . . . . . . . . . . . . . . . . 226
Vehicle Care . . . . . . . . . . . . . . . . . . 235
Glove Box . . . . . . . . . . . . . . . . . . . . . . 103
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 331
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 260
Hazard Warning Flashers . . . . . . . 158
Head Restraints . . . . . . . . . . . . . . . . . 54
Head-up Display . . . . . . . . . . . . . . . . 139
Headlamp Leveling Control . . . . . 158
Headlamps
Adaptive ForwardLighting (AFL) . . . . . . . . . . . . . . . 157
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 260
Automatic . . . . . . . . . . . . . . . . . . . . . 157
Bulb Replacement . . . . . . . . . . . . 260 Headlamps (cont'd)
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 156
Flash-to-Pass . . . . . . . . . . . . . . . . . 156
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 260
High-Beam On Light . . . . . . . . . . 133
High/Low Beam Changer . . . . . 156
Lamps On Reminder . . . . . . . . . 134
Washer . . . . . . . . . . . . . . . . . . . . . . . .113
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 64
Steering Wheel . . . . . . . . . . . . . . . .110
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Heated Mirrors . . . . . . . . . . . . . . . . . . . 48
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 186
Heating . . . . . . . . . . . . . . . . . . . . 163, 166
High-Beam On Light . . . . . . . . . . . . 133
Hill and Mountain Roads . . . . . . . . 176
Hill Start Assist (HSA) . . . . . . . . . . 197
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 66
HVAC . . . . . . . . . . . . . . . . . . . . . . 163, 166