2020 BUICK ENVISION heater

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13555857) - 2020 - CRC - 3/12/19
244 Vehicle Care
2.5L L4 Engine
1. Engine Cooling Fan (Out
of 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. { WarningDo 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 0 247 . What to Use
{ WarningPlain 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.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13555857) - 2020 - CRC - 3/12/19
248 Vehicle Care 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. 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. See Engine
Compartment Overview 0 234 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)

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13555857) - 2020 - CRC - 2/25/19
354 Index Driving (cont'd)
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 219
Defensive . . . . . . . . . . . . . . . . . . . . . 163
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 163
Environment . . . . . . . . . . . . . . . . . . 161
Hill and Mountain Roads . . . . . . 167
If the Vehicle is Stuck . . . . . . . . . 168
Loss of Control . . . . . . . . . . . . . . . 165
Off-Road Recovery . . . . . . . . . . . 165
Vehicle Load Limits . . . . . . . . . . . 169
Wet Roads . . . . . . . . . . . . . . . . . . . 166
Winter . . . . . . . . . . . . . . . . . . . . . . . . 167
Driving the Vehicle . . . . . . . . . . . . . . . . 2
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 153
E Electric Parking Brake . . . . . . . . . . 186
Electric Parking Brake Light . . . . 117
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 228
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 258
Fuses and Circuit Breakers . . . 258
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 261 Electrical System (cont'd)
Overload . . . . . . . . . . . . . . . . . . . . . 257
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 263
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 341
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 241
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . .115
Compartment Overview . . . . . . . 234
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . . 111
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 120
Cooling System . . . . . . . . . . . . . . . 243
Drive Belt Routing . . . . . . . . . . . . 325
Exhaust . . . . . . . . . . . . . . . . . . . . . . 181
Heater . . . . . . . . . . . . . . . . . . . . . . . . 178
Oil Life System . . . . . . . . . . . . . . . 239
Oil Pressure Light . . . . . . . . . . . . 121
Overheating . . . . . . . . . . . . . . . . . . 247
Power Messages . . . . . . . . . . . . . 133
Running While Parked . . . . . . . . 182
Starting . . . . . . . . . . . . . . . . . . . . . . . 175
Engine Oil
Temperature Gauge . . . . . . . . . . .110
Entry Lighting . . . . . . . . . . . . . . . . . . . 150 Equipment, Towing . . . . . . . . . . . . . 226
Event Data Recorders . . . . . . . . . . 338
Exit Lighting . . . . . . . . . . . . . . . . . . . . 150
Extended Parking . . . . . . . . . . . . . . . 180
Extender, Seat Belt . . . . . . . . . . . . . . 52
Exterior Lamp Controls . . . . . . . . . 144
Exterior Lamps Off Reminder . . . 146
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 151
F Filter,
Engine Air Cleaner . . . . . . . . . . . 241
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 146
Flashers, Hazard Warning . . . . . . 147
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 285
Changing . . . . . . . . . . . . . . . . . . . . . 287
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 308
Fluid
Automatic Transmission . . . . . . 240
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 250
Washer . . . . . . . . . . . . . . . . . . . . . . . 248
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 148
Folding Mirrors . . . . . . . . . . . . . . . . . . 28
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 207
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 335

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13555857) - 2020 - CRC - 2/25/19
Index 355Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Front Seats
Heated and Ventilated . . . . . . . . . . 41
Front Storage . . . . . . . . . . . . . . . . . . . . 88
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . 216
Economy, Driving for Better . . . 162
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 218
Filling the Tank . . . . . . . . . . . . . . . 217
Foreign Countries . . . . . . . . . . . . 216
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 109
Low Fuel Warning Light . . . . . . . 122
Prohibited Fuels . . . . . . . . . . . . . . 216
Recommended . . . . . . . . . . 215, 216
Top Tier . . . . . . . . . . . . . . . . . . . . . . 215
Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 258
Fuses and Circuit Breakers . . . 258
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 261
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 263
G
Garage Door Opener . . . . . . . . . . . 140 Garage Door Opener (cont'd)
Programming . . . . . . . . . . . . . . . . . 140
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 254
Gauges
Engine Coolant
Temperature . . . . . . . . . . . . . . . . . 111
Engine Oil Temperature . . . . . . . .110
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Odometer . . . . . . . . . . . . . . . . . . . . . 108
Speedometer . . . . . . . . . . . . . . . . . 108
Tachometer . . . . . . . . . . . . . . . . . . . 108
Trip Odometer . . . . . . . . . . . . . . . . 108
Voltmeter . . . . . . . . . . . . . . . . . . . . . .112
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . 104
General Information
Service and Maintenance . . . . . 309
Towing . . . . . . . . . . . . . . . . . . . . . . . . 219
Vehicle Care . . . . . . . . . . . . . . . . . . 230
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 87
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 329
H Halogen Bulbs . . . . . . . . . . . . . . . . . . 256
Hazard Warning Flashers . . . . . . . 147
Head Restraints . . . . . . . . . . . . . . . . . 34
Head-up Display . . . . . . . . . . . . . . . . 129 Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 255
Automatic . . . . . . . . . . . . . . . . . . . . . 147
Bulb Replacement . . . . . . . . . . . . 256
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 146
Flash-to-Pass . . . . . . . . . . . . . . . . . 146
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 256
High-Beam On Light . . . . . . . . . . 122
High/Low Beam Changer . . . . . 146
Lamps On Reminder . . . . . . . . . 123
Washer . . . . . . . . . . . . . . . . . . . . . . . . . 98
Heated
Rear Seats . . . . . . . . . . . . . . . . . . . . . 45
Steering Wheel . . . . . . . . . . . . . . . . . 95
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Heated Mirrors . . . . . . . . . . . . . . . . . . . 28
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 178
Heating . . . . . . . . . . . . . . . . . . . . 153, 156
High-Beam On Light . . . . . . . . . . . . 122
Hill and Mountain Roads . . . . . . . . 167
Hill Start Assist (HSA) . . . . . . . . . . 188
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95