2021 BUICK ENVISION power steering

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
308 Vehicle Care
Caution (Continued)
tire dressing, always wipe off any
overspray from all painted surfaces on
the vehicle.
Wheels and Wheel Trim
Use a soft, clean cloth with mild soap and
water to clean the wheels. After rinsing
thoroughly with clean water, dry with a
soft, clean towel. A wax may then be
applied.
Caution
Chrome wheels and chrome wheel trim
may be damaged if the vehicle is not
washed after driving on roads that have
been sprayed with magnesium chloride or
calcium chloride. These are used on roads
for conditions such as dust and ice.
Always wash the chrome with soap and
water after exposure.
Caution
To avoid surface damage on wheels and
wheel trim, do not use strong soaps,
chemicals, abrasive polishes, cleaners,
(Continued)
Caution (Continued)
or brushes. Use only GM approved
cleaners. Do not drive the vehicle through
an automatic car wash that uses silicon
carbide tire/wheel cleaning brushes.
Damage could occur and the repairs
would not be covered by the vehicle
warranty.
Brake System
Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear
and rotors for surface condition. Inspect all
other brake parts.
Steering, Suspension, and Chassis
Components
Visually inspect steering, suspension, and
chassis components for damaged, loose,
or missing parts or signs of wear at least
once a year.
Inspect power steering for proper
attachment, connections, binding, leaks,
cracks, chafing, etc.
Visually check constant velocity joint boots
and axle seals for leaks.
Body Component Lubrication
Lubricate all key lock cylinders, hood hinges,
liftgate hinges, and the steel fuel door
hinge, unless the components are plastic.
Applying silicone grease on weatherstrips
with a clean cloth will make them last
longer, seal better, and not stick or squeak.
Underbody Maintenance
At least twice a year, spring and fall, use
plain water to flush any corrosive materials
from the underbody. Take care to
thoroughly clean any areas where mud and
other debris can collect.
Do not directly power wash the transfer
case and/or front/rear axle output seals.
High pressure water can overcome the seals
and contaminate the fluid. Contaminated
fluid will decrease the life of the transfer
case and/or axles and should be replaced.
Sheet Metal Damage
If the vehicle is damaged and requires sheet
metal repair or replacement, make sure the
body repair shop applies anti-corrosion
material to parts repaired or replaced to
restore corrosion protection.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Service and Maintenance 315
Air Conditioning Desiccant (Replace Every
Seven Years)
The air conditioning system requires
maintenance every seven years. This service
requires replacement of the desiccant to
help the longevity and efficient operation of
the air conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required Services
Every 12 000 km/7,500 mi
Rotate the tires, if recommended for the
vehicle, and perform the following services.
SeeTire Rotation 0289.
.Check engine oil level and oil
life percentage. If needed, change engine
oil and filter, and reset oil life system.
See Engine Oil 0258 and
Engine Oil Life System 0260.
.Check the air filter life percentage.
If necessary, replace the engine air filter
and reset the engine air filter life system.
See Engine Air Filter Life System 0261.
.Check engine coolant level. See Cooling
System 0262.
.Check windshield washer fluid level. See
Washer Fluid 0266.
.Check tire inflation pressures. See Tire
Pressure 0284.
.Inspect tire wear. See Tire Inspection
0 289.
.Visually check for fluid leaks.
.Inspect brake system. See Exterior Care
0 305.
.Visually inspect steering, suspension, and
chassis components for damage, including
cracks or tears in the rubber boots, loose
or missing parts, or signs of wear at least
once a year. See Exterior Care0305.
.Inspect power steering for proper
attachment, connections, binding, leaks,
cracks, chafing, etc.
.Visually inspect halfshafts and drive
shafts for excessive wear, lubricant leaks,
and/or damage including: tube dents or
cracks, constant velocity joint or universal
joint looseness, cracked or missing boots,
loose or missing boot clamps, center
bearing excessive looseness, loose or
missing fasteners, and axle seal leaks.
.Check restraint system components. See
Safety System Check 047.
.Visually inspect the fuel system, including
the evaporative (EVAP) system, for
damage or leaks. Visually check all fuel
pipes, vapor lines, and hoses for proper
attachment, connection, routing, and
condition.
.Visually inspect exhaust system and
nearby heat shields for loose or damaged
parts.
.Lubricate body components. See Exterior
Care 0305.
.Check parking brake and automatic
transmission park mechanism. See Park
Brake and P (Park) Mechanism Check
0 269.
.Check accelerator pedal for damage, high
effort, or binding. Replace if needed.
.Visually inspect gas strut for signs of
wear, cracks, or other damage. Check the
hold open ability of the strut. If the hold
open is low, service the gas strut. See Gas
Strut(s) 0271.
.Inspect sunroof track and seal,
if equipped. See Sunroof030.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
350 Index
Climate Control Systems (cont'd)Dual Automatic . . . . . . . . . . . . . . . . . . . . . . . . 180
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . 89
Collision Damage Repair . . . . . . . . . . . . . . . . . 334
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . . . 301
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 346
Control
Hill Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Traction and Electronic Stability . . . . . . . 210
Control Light Hill Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . 189
Controls
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 127
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 93
Engine Temperature Warning Light . . . . 100
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Courtesy Transportation Program . . . . . . . . 333
Cover
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Coverage Explanations . . . . . . . . . . . . . . . . . . . 148
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Cruise Control, Adaptive . . . . . . . . . . . . . . . . . .214
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 330 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Text Telephone (TTY) Users . . . . . . . . . . . . 330
Customer Information Publications Ordering Information . . . . . 336
Customer Satisfaction Procedure . . . . . . . . . 328
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 334
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection
Infotainment System . . . . . . . . . . . . . . . . . . 339
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 338
Database Coverage Explanations . . . . . . . . . 148
Daytime Running Lamps (DRL) . . . . . . . . . . . 120
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 188 Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
Diagnostics
Connected Services . . . . . . . . . . . . . . . . . . . . 347
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 188
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 15
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 327
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . 207, 269
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Driver Assistance Systems . . . . . . . . . . . . . . . 222
Driver Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . .187
Driver Information Center (DIC) . . . . . . . . . . 103
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . . 212
Driver Mode Control Light . . . . . . . . . . . . . . . 100
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 231
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 187
Characteristics and Towing Tips . . . . . . . . 243
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Hill and Mountain Roads . . . . . . . . . . . . . . . 191

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
356 Index
Safety Defects Reporting (cont'd)General Motors . . . . . . . . . . . . . . . . . . . . . . . . 337
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 336
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Safety System Check . . . . . . . . . . . . . . . . . . . . . 47
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Scheduling Appointments . . . . . . . . . . . . . . . . 333
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . 42
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
How to Wear Seat Belts Properly . . . . . . . 43
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . 44
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Replacing after a Crash . . . . . . . . . . . . . . . . . 48
Use During Pregnancy . . . . . . . . . . . . . . . . . . 47
Seats Adjustment, Front . . . . . . . . . . . . . . . . . . . . . . 33
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . 32
Heated and Ventilated Front . . . . . . . . . . . . 39
Lumbar Adjustment, Front . . . . . . . . . . . . . . 34
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Adjustment, Front . . . . . . . . . . . . . . . 34
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 35
Securing Child Restraints . . . . . . . . . . . . . . . 71, 73 Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185 Accessories and Modifications . . . . . . . . . 254
Climate Control System . . . . . . . . . . . . . . . . 178
Doing Your Own Work . . . . . . . . . . . . . . . . . 255
Maintenance Records . . . . . . . . . . . . . . . . . . 324
Maintenance, General Information . . . . . 313
Parts Identification . . . . . . . . . . . . . . . . . . . . . 325
Scheduling Appointments . . . . . . . . . . . . . . 333
Service Electric Parking Brake Light . . . . . . . 97
Services Special Application . . . . . . . . . . . . . . . . . . . . . 319
Servicing System . . . . . . . . . . . . . . . . . . . . . . . . 148
Servicing the Airbag . . . . . . . . . . . . . . . . . . . . . . .57
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . 237
Signals, Turn and Lane-Change . . . . . . . . . . . . 122
Software Updates . . . . . . . . . . . . . . . . . . . . . . . . 130
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Special Application Services . . . . . . . . . . . . . . 319 Specifications and Capacities . . . . . . . . . . . . . 326
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Start Vehicle, Remote . . . . . . . . . . . . . . . . . . . . . . 12
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . 198
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Heated Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . 82
Wheel Controls . . . . . . . . . . . . . . . . . . . . . . . . . 82
Steering Wheel Controls . . . . . . . . . . . . . . . . . . 127
Stop/Start System . . . . . . . . . . . . . . . . . . . . . . . 199
Storage Areas Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Cargo Management System . . . . . . . . . . . . 78
Center Console . . . . . . . . . . . . . . . . . . . . . . . . . 77
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . 79
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . 79
Storage Compartments . . . . . . . . . . . . . . . . . . . 76
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2