headlamp BUICK ENVISION 2021 Owner's Guide

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
272 Vehicle Care
Headlamp Aiming
Front Headlamp Aiming
Headlamp aim has been preset and should
need no further adjustment.
If the vehicle is damaged in a crash, the
headlamp aim may be affected.
If adjustment to the headlamps is necessary,
see your dealer.
Bulb Replacement
For the proper type of replacement bulbs,
or any bulb changing procedure not listed in
this section, contact your dealer.
Caution
Do not replace incandescent bulbs with
aftermarket LED replacement bulbs. This
can cause damage to the vehicle electrical
system.
LED Lighting
This vehicle has several LED lamps. For
replacement of any LED lighting assembly,
contact your dealer.
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to
protect against an electrical system
overload.
When the electrical load current is too
heavy, the circuit breaker opens and closes,
protecting the circuit until the current load
returns to normal or the problem is fixed.
This greatly reduces the chance of circuit
overload and fire caused by electrical
problems.
Replace a bad fuse with a new one of the
identical size and rating.
If there is a problem on the road and a fuse
needs to be replaced, the same amperage
fuse can be borrowed. Choose some feature
of the vehicle that is not needed to use and
replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause the lamps
to go on and off, or in some cases to
remain off. Have the headlamp wiring
checked right away if the lamps go on and
off or remain off.
Windshield Wipers
If the wiper motor overheats due to heavy
snow or ice, the windshield wipers will stop
until the motor cools and will then restart.
Although the circuit is protected from
electrical overload, overload due to heavy
snow or ice may cause wiper linkage
damage. Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an electrical
problem and not snow or ice, be sure to get
it fixed.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
274 Vehicle Care
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F02 Trailer stop/turn right
F03 Electronic brake control module
F05 Rear defog
F06 –
F07 Trailer stop/turn left Fuses Usage
F08 Overhead console module/ Universal garage door opener/
Rain sensor
F09 Suspension control semi active dampen system module
F10 Adaptive forward lighting/rear drive control module
F11 Direct current to direct current converter 1 Fuses Usage
F12 Power tailgate
F13 –
F14 Canister vent solenoid F15 –
F16 Front wiper F17 Passenger power seat
F18 Motor window lifter left
F19 Motor window lifter right F21 Exterior lighting module 1
F22 Exterior lighting module 3
F23 Exterior lighting module 6
F24 –
F26 Transmission control module direct current converter
F27 Remote function actuator
F28 –
F29 Exterior lighting module 4
F30 Memory seat module driver F32 Headlamp right
F33 Front heated seat

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Vehicle Care 275
FusesUsage
F34 Rear heated seat F35 Door panel/Seat position driver and passenger switch
F36 Fuel tank zone module
F39 Handsfree closure module
F40 Headlamp left F41 –
F44 Rear wiper
F48 Blower motor
F49 –
F50 –
F51 –
F52 –
F54 –
F55 –
F56 Starter motor F57 Driver power seat/Memory seat module
F58 Rear drive control module
F59 – Fuses
Usage
F60 –
F61 –
F62 –
F63 –
F65 Air conditioning control
F67 –
F68 –
F69 –
F70 –
F72 Starter pinion
F74 –
F75 Engine control module main
F76 Engine control module 2
F78 Horn
F79 Washer pump F81 –
F82 Engine control module battery
F83 Engine control module/ Ignition coil
F84 Off engine 1/off engine 2 Fuses
Usage
F86 –
F87 Sunroof
F88 Aero shutter
F89 –
F93 Trailer park lamp
F95 –
F96 –
F99 –
Relays Usage
K04 Rear defog K25 Front wiper control
K37 Front wiper speed
K64 Starter motor
K66 Powertrain K71 –
K73 Air conditioning control
K80 Starter pinion
K90 –
K98 –

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Vehicle Care 277
Fuses Amps UsageF11 10A Body control module 1
F12 – –
F13 – –
F14 – –
F15 15A Auxiliary power outlet rear cargo
F16 – –
F17 20A Exterior lighting module 7
F18 10A Uplevel tail lamp
F19 10A Steering column lock assembly
F20 10A Sensing diagnostic module/Automatic
occupant sensing/
Data link
connection/
Wireless charger
F21 5A Central gateway module/Telematics
control platform
module Fuses Amps Usage
F22 10A External object calculating
module/Long
range radar/Park
assist/front
camera module/
Side blind zone
alert
F23 10A Video processing module
F24 – –
F25 10A AC power outlet/ Auxiliary USB
F26 – –
F27 30A Amplifier
F28 60A Jumper
F29 10A Instrument cluster/Heads up
display/Air quality
ionizer module/
Center stack
display/Heating
ventilation air
conditioning
display Fuses Amps Usage
F30 – –
F31 – –
F32 10A Run crank for misc. 3 humidity sensor/
Exterior lighting
module/Electronic
brake control
module/Air quality
sensor exterior/
Headlamp manual
leveling left Right/
Inside rear view
mirror/Interior
particulate matter
sensor/Seat fan
control cushion
and back driver
co-driver
F33 – –

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
278 Vehicle Care
Fuses Amps UsageF34 10A Run crank for misc. 1 & 2 shifter
interface board
module/
Instrument panel
cluster/
Transmission
control module/
Sensing &
diagnostic
module/Headlamp
manual leveling
switch/Reflective
light auxiliary
display
F35 15A Run crank for engine control
module
F36 10A Electric park brake switch/ Shifter
interface board
F37 15A Radio/Center stack module/
Auxiliary jack
F38 – – Fuses Amps Usage
F39 2A Steering wheel clock spring
F40 20A Exterior lighting module 2
F41 7.5A Heated steering wheel module
F42 20A Direct current to alternate current
inverter module
CB1 – –
CB2 15A Auxiliary power outlet console
Relays Usage
K01 Retained accessory power accessory
K02 Run/crank
K03 –
K04 –
K05 –Wheels and Tires
Tires
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
for information regarding the tire
warranty and where to get service. For
additional information refer to the tire
manufacturer.
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits 0193.
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
(Continued)

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
294 Vehicle Care
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law. Warning:
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in
combination, can cause heat buildup
and possible tire failure.
Wheel Alignment and Tire
Balance
The tires and wheels were aligned and
balanced at the factory to provide the
longest tire life and best overall
performance. Adjustments to wheel
alignment and tire balancing are not
necessary on a regular basis. Consider an
alignment check if there is unusual tire wear
or the vehicle is significantly pulling to one
side or the other. Some slight pull to the
left or right, depending on the crown of the
road and/or other road surface variationssuch as troughs or ruts, is normal. If the
vehicle is vibrating when driving on a
smooth road, the tires and wheels may
need to be rebalanced. See your dealer for
proper diagnosis.
Wheel Replacement
Replace any wheel that is bent, cracked,
or badly rusted or corroded. If wheel nuts
keep coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If the
wheel leaks air, replace it. Some aluminum
wheels can be repaired. See your dealer if
any of these conditions exist.
Your dealer will know the kind of wheel that
is needed.
Each new wheel should have the same
load-carrying capacity, diameter, width,
offset, and be mounted the same way as
the one it replaces.
Replace wheels, wheel bolts, wheel nuts,
or Tire Pressure Monitor System (TPMS)
sensors with new GM original equipment
parts.
{Warning
Using the wrong replacement wheels,
wheel bolts, or wheel nuts can be
dangerous. It could affect the braking and
handling of the vehicle. Tires can lose air,
and cause loss of control, causing a crash.
Always use the correct wheel, wheel
bolts, and wheel nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration,
headlamp aim, bumper height, vehicle
ground clearance, and tire or tire chain
clearance to the body and chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used one is
dangerous. How it has been used or how
far it has been driven may be unknown.
It could fail suddenly and cause a crash.
When replacing wheels, use a new GM
original equipment wheel.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
320 Service and Maintenance
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. SeeRecommended Fluids and
Lubricants 0322 for GM approved fluids.
.Engine oil and windshield washer fluid
levels should be checked at every fuel fill.
.Instrument cluster lights may come on to
indicate that fluids may be low and need
to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that there are
no cracks or leaks. With a multi-point
inspection, your dealer can inspect the hoses
and advise if replacement is needed.
Lamps
Properly working headlamps, taillamps, and
brake lamps are important to see and be
seen on the road.
.Signs that the headlamps need attention
include dimming, failure to light, cracking,
or damage. The brake lamps need to be
checked periodically to ensure that they
light when braking.
.With a multi-point inspection, your dealer
can check the lamps and note any
concerns.
Shocks and Struts
Shocks and struts help aid in control for a
smoother ride.
.Signs of wear may include steering wheel
vibration, bounce/sway while braking,
longer stopping distance, or uneven
tire wear.
.As part of the multi-point inspection,
trained dealer technicians can visually
inspect the shocks and struts for signs of
leaking, blown seals, or damage, and can
advise when service is needed.
Tires
Tires need to be properly inflated, rotated,
and balanced. Maintaining the tires can save
money and fuel, and can reduce the risk of
tire failure.
.Signs that the tires need to be replaced
include three or more visible treadwear
indicators; cord or fabric showing through
the rubber; cracks or cuts in the tread or
sidewall; or a bulge or split in the tire.
.Trained dealer technicians can inspect and
recommend the right tires. Your dealer
can also provide tire/wheel balancing
services to ensure smooth vehicle
operation at all speeds. Your dealer sells
and services name brand tires.
Vehicle Care
To help keep the vehicle looking like new,
vehicle care products are available from your
dealer. For information on how to clean and
protect the vehicle’s interior and exterior,
see Interior Care 0309 and
Exterior Care 0305.
Wheel Alignment
Wheel alignment is critical for ensuring that
the tires deliver optimal wear and
performance.
.Signs that the alignment may need to be
adjusted include pulling, improper vehicle
handling, or unusual tire wear.
.Your dealer has the required equipment
to ensure proper wheel alignment.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Index 349
Assistance Systems for Parking andBacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . . . . . . 199
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 25
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Emergency Braking (AEB) . . . . . . . . . . . . . . 234
Headlamp System . . . . . . . . . . . . . . . . . . . . . 120
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 260
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 206
Avoiding Untrusted Media Devices . . . . . . . .134
B
Battery
Exterior Lighting Battery Saver . . . . . . . . 124
Load Management . . . . . . . . . . . . . . . . . . . . . 124
Power Protection . . . . . . . . . . . . . . . . . . . . . . 124
Battery - North America . . . . . . . . . . . . 268, 302
Blade Replacement, Wiper . . . . . . . . . . . . . . . 269
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 153, 154
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . 136 Brake
Parking, Electric . . . . . . . . . . . . . . . . . . . . . . . . 208
System Warning Light . . . . . . . . . . . . . . . . . . 96
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Automatic Emergency (AEB) . . . . . . . . . . . 234
Braking System Front Pedestrian (FPB) . . . . . . . . . . . . . . . . . 235
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 196
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Bulb Replacement Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 272
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 291C
California Perchlorate Materials Requirements . . . 254
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . 254, 268, 302, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . . . . . . . . 326
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 203 Carbon Monoxide (cont'd)
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 192
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Management System . . . . . . . . . . . . . . . . . . . 78
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . .77
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Charging System Light . . . . . . . . . . . . . . . . . . . . 95
Check Engine Light (Malfunction Indicator) . . . . 95
Child Restraints
Infants and Young Children . . . . . . . . . . . . . 60
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71, 73
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Climate Control Systems . . . . . . . . . . . . . . . . . .178 Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . 178

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
352 Index
Fuel (cont'd)Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Fuses Engine Compartment Fuse Block . . . . . . . 273
Fuses and Circuit Breakers . . . . . . . . . . . . . 273
Instrument Panel Fuse Block . . . . . . . . . . . 276
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 113Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Gauges Engine Coolant Temperature . . . . . . . . . . . . 93
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Warning Lights and Indicators . . . . . . . . . . 89
General Information Service and Maintenance . . . . . . . . . . . . . . 313
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Global Positioning System (GPS) . . . . . . . . . .147
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
GM Mobility Reimbursement Program . . . . 331
Guidance Problems with the Route . . . . . . . . . . . . . . 147
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 121
HD Radio Technology . . . . . . . . . . . . . . . . . . . . . 132
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Head-up Display . . . . . . . . . . . . . . . . . . . . . . . . . 105
HeadlampsAdaptive Forward Lighting (AFL) . . . . . . . . 121
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 272
Daytime Running Lamps (DRL) . . . . . . . . . 120
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
High-Beam On Light . . . . . . . . . . . . . . . . . . . 102
High/Low Beam Changer . . . . . . . . . . . . . . 120
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 102
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 82
Heated and Ventilated Front Seats . . . . . . . 39
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 102
High-Speed Operation . . . . . . . . . . . . . . . . . . . 285
Hill and Mountain Roads . . . . . . . . . . . . . . . . . 191
Hill Descent Control (HDC) . . . . . . . . . . . . . . . . 211
Hill Descent Control Light . . . . . . . . . . . . . . . . . 98
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 209 Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
How to Wear Seat Belts Properly . . . . . . . . . 43
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180
I
If the System Needs Service . . . . . . . . . . . . . 148
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 197
Indicator
Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . . 99
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Infants and Young Children, Restraints . . . . 60
Information
Publication Ordering . . . . . . . . . . . . . . . . . . . 336
Infotainment System . . . . . . . . . . . . . . . . . . . . 339
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . . 89
Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . 26
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 125
J
Jump Starting - North America . . . . . . . . . . . 302
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . 280