2023 BUICK ENVISION heater

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16060855) - 2023 - CRC - 2/9/22
224 Driving and Operating
How the System Works
The vehicle may have a Park
Assist amphitheatre-like display on the
cluster with bars that represent the
estimated location of a detected object and
the vehicle’s distance from the object. As a
detected object becomes closer, more bars
light up and change color from yellow to
amber to red. Vehicles equipped with RPA
will show the amphitheater at the rear of
the vehicle, and if equipped, FRPA will show
the amphitheater at the front and rear.
When an object is first detected in the rear,
one beep will be heard from the rear, or the
driver seat will pulse two times, if equipped
with Safety Alert Seat. When an object is
very close, five beeps will sound from the
front or rear (depending on the object's
location), or the driver seat will pulse five
times. Beeps for front are higher pitched
than the rear.
Turning the System On and Off
The
Xbutton is used to turn on or off
the Park Assist, which also turns on or off
the Backing Warning and Reverse Automatic
Braking (RAB) at the same time. When the
system is turned off, a system off message
is shown on the display. This message
disappears after a short period of time.
If the vehicle has a trailer hitch attached,
select ON - ATTACHED using the
infotainment system menus to allow Park
Assist to function properly. Park Assist is
able to compensate for a trailer hitch up to
0.3 m (1 ft) in length and width. Park Assist
may not function properly with larger trailer
hitches and provide inaccurate information
of objects in the rear. Turn off Park Assist when towing a trailer to
prevent unwanted beeps and when a bike
rack is attached to ensure proper operation.
To view available settings for this feature,
touch the Settings icon on the infotainment
home page. Select
“Vehicle”to display the
list of available options and select “Collision/
Detection Systems”.
When the System Does Not Seem to Work
Properly
If a service message displays, check the
following conditions:
.The sensors may not be clean. Keep the
vehicle's front and rear bumpers free of
mud, dirt, snow, ice, and slush. For
cleaning instructions, see Exterior Care
0 304.
.The Park Assist sensors may be covered
by frost or ice. Frost or ice can form
around and behind the sensors and may
not always be seen; this can occur after
washing the vehicle in cold weather. The
message may not clear until the frost or
ice has melted.
If a service message displays and the above
conditions do not exist, take the vehicle to
your dealer for repairs.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16060855) - 2023 - CRC - 2/9/22
260 Vehicle Care
{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 engine cooling system in the vehicle is
filled with DEX-COOL engine coolant mixture.
This coolant needs to be checked and
changed at appropriate levels. See
Recommended Fluids and Lubricants0317.
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 0262.
What to Use
{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.
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 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.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16060855) - 2023 - CRC - 2/9/22
Vehicle Care 263
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,
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 or the
engine coolant temperature warning light no
longer displays, 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
The appropriate message will appear in the
Driver Information Center (DIC) when the
fluid level is low.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16060855) - 2023 - CRC - 2/9/22
346 Index
Door (cont'd)Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 322
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . 201, 266
Driver
Assistance Systems . . . . . . . . . . . . . . . . . . . . 219
Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Information Center (DIC) . . . . . . . . . . . . . . . 106
Mode Control . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Mode Control Light . . . . . . . . . . . . . . . . . . . . 103
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 229
Better Fuel Economy . . . . . . . . . . . . . . . . . . . . 181
Characteristics and Towing Tips . . . . . . . . 242
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Hill and Mountain Roads . . . . . . . . . . . . . . 185
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . 187
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 184
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 184
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 188
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Driving the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . .2
Dual
Automatic Climate Control System . . . . 174
E
ElectricParking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Parking Brake Light . . . . . . . . . . . . . . . . . . . . 100
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . 249
System Overload . . . . . . . . . . . . . . . . . . . . . . 269
Electrical System
Engine Compartment Fuse Block . . . . . . . . 271
Fuses and Circuit Breakers . . . . . . . . . . . . . . 271
Instrument Panel Fuse Block . . . . . . . . . . . 274
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 258
Air Filter Life System . . . . . . . . . . . . . . . . . . 258
Check Light (Malfunction Indicator) . . . . . 98
Compartment Overview . . . . . . . . . . . . . . . . 254
Coolant Temperature Gauge . . . . . . . . . . . . 96
Coolant Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 259
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 322
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Engine (cont'd)
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 257
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . 104
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 111
Running While Parked . . . . . . . . . . . . . . . . . 197
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 247
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 333
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 197
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 50
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Lamps Off Reminder . . . . . . . . . . . . . . . . . . . . 118
Lighting Battery Saver . . . . . . . . . . . . . . . . . 124
F
FilterEngine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 258
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 121
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16060855) - 2023 - CRC - 2/9/22
Index 347
FluidAutomatic Transmission . . . . . . . . . . . . . . . 258
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Forward Collision Alert (FCA) System . . . . . . . . . . . 230
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Front Heated and Ventilated Seats . . . . . . . . . . . . 41
Pedestrian Braking (FPB) System . . . . . . . 233
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Economy, Driving for Better . . . . . . . . . . . . 181
Filling a Portable Fuel Container . . . . . . . 241
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 240
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 239
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Low Fuel Warning Light . . . . . . . . . . . . . . . 105
Management, Active . . . . . . . . . . . . . . . . . . . 196
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 239
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 239
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 Fuses
Engine Compartment Fuse Block . . . . . . . . 271
Fuses and Circuit Breakers . . . . . . . . . . . . . . 271
Instrument Panel Fuse Block . . . . . . . . . . . 274
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 112
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Gauges Engine Coolant Temperature . . . . . . . . . . . . 96
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Warning Lights and Indicators . . . . . . . . . . 92
General Information Service and Maintenance . . . . . . . . . . . . . . 312
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Global Positioning System (GPS) . . . . . . . . . 146
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Guidance
Problems with the Route . . . . . . . . . . . . . . 147
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 121
HD Radio Technology . . . . . . . . . . . . . . . . . . . . . 132
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Head-Up Display (HUD) . . . . . . . . . . . . . . . . . . 109
HeadlampsAdaptive Forward Lighting (AFL) . . . . . . . . 119
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 269
Daytime Running Lamps (DRL) . . . . . . . . . . 118
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
High-Beam On Light . . . . . . . . . . . . . . . . . . . 105
High/Low Beam Changer . . . . . . . . . . . . . . . 118
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 106
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 85
Ventilated Front Seats . . . . . . . . . . . . . . . . . . 41
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172, 174
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 105
High-Speed Operation . . . . . . . . . . . . . . . . . . . 284
Hill Descent Control (HDC) . . . . . . . . . . . . . . . . . 207
Descent Control Light . . . . . . . . . . . . . . . . . . 101