
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
228 Vehicle Care
harm. Engine exhaust, many parts
and systems, many fluids, and
some component wear by-products
contain and/or emit these
chemicals.
SeeBattery - North America 0250
and Jump Starting - North America
(On-board with eAssist Only) 0297
or Jump Starting - North America
(with or without eAssist) 0298.
California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, safety belt pretensioners,
and lithium batteries contained in
Remote Keyless Entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Accessories and
Modifications
Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered
by the vehicle warranty.
Damage to suspension components
caused by modifying vehicle height
outside of factory settings will not be
covered by the warranty. Damage to vehicle components
resulting from modifications or the
installation or use of non-GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
Also, see
Adding Equipment to the
Airbag-Equipped Vehicle 076.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 261
FusesUsage
38 Left high-beam
41 Brake vacuum pump
42 Cooling fan K2
43 –
44 Transmission auxiliary oil pump
(eAssist)
45 Cooling fan K1
46 Cooling fan relay
47 6–cylinder engine: Pre-catalytic
converter O2 sensor
heater/Canister
purge solenoid.
4–cylinder engine:
Pre and post
catalytic converter
O2 sensor Heaters/
Canister purge
solenoid
48 Fog lamps
49 Right HID headlamp
50 Left HID headlamp
51 Horn Fuses
Usage
52 Cluster Run/Crank
53 Run/Crank for: rearview mirror/Rear
vision camera/Air
quality sensor/Aero
shutter motor
54 Run/Crank for: HVAC/Headlamp
switch
55 Outside rearview mirror/Universal
remote system/Front
window switches
56 Windshield washer
59 AIR pump
60 Heated mirror
62 Canister vent
64 Adaptive forward lighting (AFL)
module–battery
65 –
66 AIR solenoid (eAssist) Fuses
Usage
67 Fuel pump power module/Chassis
control module
69 Regulated voltage control sensor
70 Parking assist/Side blind zone
71 Passive entry/ Passive start
Relays Usage
1 A/C Clutch
2 Starter
4 Wiper speed
5 Wiper control
6 Cabin heater coolant pump (eAssist)/
Secondary air
injector/Secondary
air injector with
pressure sensor
7 Engine control module
9 Cooling fan

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 263
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.Fuses Usage
1 APO 3
2 Body control module 7
3 Steering wheel controls backlight
4 Radio/Human machine interface/
Rear auxiliary audio
jack/Front auxiliary
audio video jack/
Touchpad/Remote
media player/Bluray
remote media player
5 OnStar/Universal hands–free phone
6 Power outlet 1
7 Power outlet 2
8 Body control module 1
9 Body control module 4 Fuses Usage
10 Body control module 8
11 Front HVAC/Blower
12 Passenger seat
13 Driver seat
14 Diagnostic link connector
15 Airbag/Automatic occupant sensing
16 Trunk
17 HVAC Controller
18 Pre-fuse for fuses 4 and 5
19 Center stack displays/Head-up
display/Right
steering wheel
control switch/Rear
seat infotainment
display (eAssist)/
HVAC/Center stack
displays Fuses Usage
20 Rear seat entertainment
display/Rear seat
audio
21 Instrument cluster
22 Discrete logic ignition switch
23 Body control module 3
24 Body control module 2
25 Rear HVAC/Blower
26 AC DC inverter
Relays Usage R1 Trunk relay
R2 –
R3 Power outlet relay

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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348 OnStar
4G LTE speed. Up to seven mobile
devices can be connected. A data
plan is required. Use the in-vehicle
controls only when it is safe to
do so.1. To retrieve Wi-Fi hotspot information, press
=, wait for
the prompt, then say “Wi-Fi
settings.” On some vehicles,
touch Wi-Fi Settings on the
screen.
2. The Wi-Fi settings will display the Wi-Fi hotspot name (SSID),
password, and on some
vehicles, the connection type
(no Internet connection, 3G,
4G, 4G LTE), and signal quality
(poor, good, excellent).
3. To change the SSID or password, press
Qor call
1-888-4ONSTAR to connect
with an Advisor.
OnStar RemoteLink
®Mobile App
(If Equipped)
Download the OnStar RemoteLink
mobile app to select Apple
®iOS,
Android™, BlackBerry®,
or Windows®mobile devices. OnStar Subscribers can access the
following services from a mobile
device:
.
Remotely start/stop the vehicle,
if factory-equipped.
. Lock/unlock doors, if equipped
with automatic locks.
. Activate the horn and lamps.
. Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
. Send directions to the vehicle.
. Locate the vehicle on a map
(U.S. market only).
. Turn the vehicle's Wi-Fi hotspot
on/off, manage settings, and
monitor data consumption,
if equipped.
For OnStar RemoteLink information
and compatibility, see
www.onstar.com (U.S.) or
www.onstar.ca (Canada).
Remote Services
Contact an OnStar Advisor to
unlock the doors or sound the horn
and flash the lamps.
OnStar AtYourService
OnStar Advisors can provide special
offers from restaurants and retailers
on your route, help locate hotels,
or book a room.
OnStar Hands-Free Calling
Make and receive calls with the
built-in wireless calling service,
which requires available minutes.
Make a Call
1. Press
=. System responds:
“OnStar ready.”
2. Say “Call.”System responds:
“Call. Please say the name or
number to call.”
3. Say the entire number without pausing, including a “1”and the
area code. System responds:
“OK, calling.”

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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350 OnStar
Reactivation for Subsequent
Owners
PressQand follow the prompts to
speak to an Advisor as soon as
possible. The Advisor will update
vehicle records and explain OnStar
service options.
How OnStar Service Works
Automatic Crash Response,
Emergency Services, Crisis Assist,
Stolen Vehicle Assistance,
Advanced Diagnostics, Remote
Services, Roadside Assistance,
Turn-by-Turn Navigation, and
Hands-Free Calling are available on
most vehicles. Not all OnStar
services are available everywhere
or on all vehicles. For more
information, a full description of
OnStar services, system limitations,
and OnStar terms and conditions:
. Call 1-888-4ONSTAR
(1-888-466-7827).
. See www.onstar.com (U.S.).
. See www.onstar.ca (Canada).
. Call TTY 1-877-248-2080. .
Press
Qto speak with an
Advisor.
OnStar services cannot work unless
the vehicle is in a place where
OnStar has an agreement with a
wireless service provider for service
in that area. The wireless service
provider must also have coverage,
network capacity, reception, and
technology compatible with OnStar
services. Service involving location
information about the vehicle cannot
work unless GPS signals are
available, unobstructed, and
compatible with the OnStar
hardware. OnStar services may not
work if the OnStar equipment is not
properly installed or it has not been
properly maintained. If equipment or
software is added, connected,
or modified, OnStar services may
not work. Other problems beyond
the control of OnStar —such as
hills, tall buildings, tunnels, weather,
electrical system design and
architecture of the vehicle, damage
to the vehicle in a crash, or wireless
phone network congestion or
jamming —may prevent service. See
Radio Frequency
Statement 0341.
Services for People with
Disabilities
Advisors provide services to help
Subscribers with physical disabilities
and medical conditions.
Press
Qto help:
. Locate a gas station with an
attendant to pump gas.
. Find a hotel, restaurant, etc.,
that meets accessibility needs.
. Provide directions to the closest
hospital or pharmacy in urgent
situations.
TTY Users
OnStar has the ability to
communicate to deaf,
hard-of-hearing, or speech-impaired
customers while in the vehicle. The
available dealer-installed TTY
system can provide in-vehicle
access to all OnStar services,
except Virtual Advisor and OnStar
Turn-by-Turn Navigation.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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360 Index
IndicatorVehicle Ahead . . . . . . . . . . . . . . . . .117
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 79
Information Energy . . . . . . . . . . . . . . . . . . . . . . . 123
Infotainment . . . . . . . . . . . . . . . . . . . . 156
Infotainment System . . . . . . . . . . . . 344
Instrument Cluster . . . . . . . . . . . . . . 106
Interior Rearview Mirrors . . . . . . . . . 44
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North
America . . . . . . . . . . . . . . . . . . 297, 298
K
Key and Lock Messages . . . . . . . . 133
Keyless EntryRemote (RKE) System . . . . . . . . . 28
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
L
Labeling, Tire Sidewall . . . . . . . . . . 266
Lamps Daytime Running (DRL) . . . . . . 149
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 152
Exterior Controls . . . . . . . . . . . . . . 148
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 149 Lamps (cont'd)
Headlamps, Front Turn
Signal, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . . . 255
License Plate . . . . . . . . . . . . . . . . . 256
Malfunction Indicator . . . . . . . . . .114
Messages . . . . . . . . . . . . . . . . . . . . 134
On Reminder . . . . . . . . . . . . . . . . . 121
Reading . . . . . . . . . . . . . . . . . . . . . . 153
Sun Visor . . . . . . . . . . . . . . . . . . . . . 153
Lane Change Alert (LCA) . . . . . . . 211
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 213
Lane Departure Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Lap-Shoulder Belt . . . . . . . . . . . . . . . 61
LATCH System Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . . . 91
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 84
LED Lighting . . . . . . . . . . . . . . . . . . . . 254
Light Adaptive Forward Lighting(AFL) Light . . . . . . . . . . . . . . . . . . 120
Lighting Adaptive Forward . . . . . . . . . . . . . 150
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 153 Lighting (cont'd)
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Illumination Control . . . . . . . . . . . 152
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Airbag Readiness . . . . . . . . . . . . . .112
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . .117
Brake System Warning . . . . . . . .115
Charging System . . . . . . . . . . . . . .113
Cruise Control . . . . . . . . . . . . . . . . 121
Door Ajar . . . . . . . . . . . . . . . . . . . . . 121
Electric Parking Brake . . . . . . . . .116
Engine Coolant
Temperature Warning . . . . . . . .118
Engine Oil Pressure . . . . . . . . . . .119
Flash-to-Pass . . . . . . . . . . . . . . . . . 149
Front Fog Lamp . . . . . . . . . . . . . . 121
High-Beam On . . . . . . . . . . . . . . . . 120
High/Low Beam Changer . . . . . 149
Lane Departure Warning . . . . . . .117
Low Fuel Warning . . . . . . . . . . . . 120
Safety Belt Reminders . . . . . . . . . 111
Security . . . . . . . . . . . . . . . . . . . . . . 120
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . .116
StabiliTrak
®OFF . . . . . . . . . . . . . .118
Tire Pressure . . . . . . . . . . . . . . . . . .119

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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364 Index
ServicesSpecial Application . . . . . . . . . . . 320
Servicing the Airbag . . . . . . . . . . . . . 75
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 252
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 183
Out of Park . . . . . . . . . . . . . . . . . . . 184
Side Blind Zone Alert (SBZA) . . . 211
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 151
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . 296
Special Application Services . . . . 320
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 327
Speedometer . . . . . . . . . . . . . . . . . . . 109
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . .118
Start Assist, Hills . . . . . . . . . . . . . . . 192
Start Vehicle, Remote . . . . . . . . . . . 34
Starter Switch Check . . . . . . . . . . . 251
Starting the Engine . . . . . . . . . . . . . 178
Starting the Vehicle
Messages . . . . . . . . . . . . . . . . . . . . . 137
Steering . . . . . . . . . . . . . . . . . . . . . . . . 166 Fluid, Power . . . . . . . . . . . . . . . . . . 247 Steering (cont'd)
Heated Wheel . . . . . . . . . . . . . . . . 101
Wheel Adjustment . . . . . . . . . . . . 101
Wheel Controls . . . . . . . . . . . . . . . 101
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . . . 256
Storage Areas Center Console . . . . . . . . . . . . . . . . . 99
Convenience Net . . . . . . . . . . . . . . . 99
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Glove Box . . . . . . . . . . . . . . . . . . . . . . 97
Sunglasses . . . . . . . . . . . . . . . . . . . . . 98
Storage Compartments . . . . . . . . . . 97
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . 291
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 170
Summer Tires . . . . . . . . . . . . . . . . . . 265
Sun Visor Lamps . . . . . . . . . . . . . . . 153
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 47
Sunglass Storage . . . . . . . . . . . . . . . . 98
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sunshade Rear Window . . . . . . . . . . . . . . . . . . . 47
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 208
Infotainment . . . . . . . . . . . . . 156, 344 Systems
Driver Assistance . . . . . . . . . . . . . 204
T
Tachometer . . . . . . . . . . . . . . . . . . . . . 109
TaillampsBulb Replacement . . . . . . . . . . . . 256
Text Telephone (TTY) Users . . . . 333
Theft-Deterrent Systems . . . . . 41, 42 Immobilizer . . . . . . . . . . . . . . . . . . . . . 41
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 All-Season . . . . . . . . . . . . . . . . . . . . 265
Buying New Tires . . . . . . . . . . . . . 279
Chains . . . . . . . . . . . . . . . . . . . . . . . . 283
Changing . . . . . . . . . . . . . . . . . . . . . 291
Compact Spare . . . . . . . . . . . . . . . 296
Designations . . . . . . . . . . . . . . . . . 268
Different Size . . . . . . . . . . . . . . . . . 280
If a Tire Goes Flat . . . . . . . . . . . . 284
Inspection . . . . . . . . . . . . . . . . . . . . 277
Messages . . . . . . . . . . . . . . . . . . . . 137
Pressure . . . . . . . . . . . . . . . . . . . . . . 272
Pressure Light . . . . . . . . . . . . . . . . .119
Pressure Monitor Operation . . 274
Pressure Monitor System . . . . . 273
Rotation . . . . . . . . . . . . . . . . . . . . . . 277
Sealant andCompressor Kit . . . . . . . . . . . . . 285

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Index 365
Tires (cont'd)Sealant and Compressor
Kit, Storing . . . . . . . . . . . . . . . . . . 291
Sidewall Labeling . . . . . . . . . . . . . 266
Terminology and Definitions . . 268
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 281
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 282
Wheel Replacement . . . . . . . . . . 282
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 278
Winter . . . . . . . . . . . . . . . . . . . . . . . . 265
Towing
Driving Characteristics . . . . . . . . 220
Equipment . . . . . . . . . . . . . . . . . . . . 224
General Information . . . . . . . . . . 220
Recreational Vehicle . . . . . . . . . . 301
Trailer . . . . . . . . . . . . . . . . . . . 222, 224
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 301
Traction Control System (TCS)/StabiliTrak
®Light . . . . . . . . . . . . .118
Limited-Slip Differential . . . . . . . 194
Off Light . . . . . . . . . . . . . . . . . . . . . . .117
Selective Ride Control . . . . . . . . 194
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 192 Trailer
Towing . . . . . . . . . . . . . . . . . . . 222, 224
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 186
Fluid, Automatic . . . . . . . . . . . . . . 239
Messages . . . . . . . . . . . . . . . . . . . . 138
Transportation Program,
Courtesy . . . . . . . . . . . . . . . . . . . . . . 336
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 151
Turn Signal Bulb Replacement . . . . . . . . . . . . 256
U
Uniform Tire Quality Grading . . . 281
Universal Remote System . . . . . . 145Operation . . . . . . . . . . . . . . . . . . . . . 147
Programming . . . . . . . . . . . . . . . . . 145
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 40
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 165
Identification Number (VIN) . . . 326
Load Limits . . . . . . . . . . . . . . . . . . . 171
Messages . . . . . . . . . . . . . . . . . . . . 130 Vehicle (cont'd)
Personalization . . . . . . . . . . . . . . . 139
Remote Start . . . . . . . . . . . . . . . . . . . 34
Security . . . . . . . . . . . . . . . . . . . . . . . . 40
Speed Messages . . . . . . . . . . . . . 138
Towing . . . . . . . . . . . . . . . . . . . . . . . . 301
Vehicle Ahead Indicator . . . . . . . . 117
Vehicle Care Storing the Tire Sealant
and Compressor Kit . . . . . . . . . 291
Tire Pressure . . . . . . . . . . . . . . . . . 271
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 342
Ventilation, Air . . . . . . . . . . . . . . . . . . 161
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Voltage Devices and Wiring . . . . 257
W
Warning
Brake System Light . . . . . . . . . . . .115
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 213
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 105
Warnings Hazard Flashers . . . . . . . . . . . . . . 151
Washer Fluid . . . . . . . . . . . . . . . . . . . 247
Wheels Alignment and Tire Balance . . 282