2018 BUICK LACROSSE engine

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
324 Technical Data
Engine Specifications
EngineVIN CodeTransmission Spark Plug Gap
2.5L L4 Engine ZAutomatic 0.95–1.10mm (0.037–
0.043in)
3.6L V6 Engine SAutomatic 0.80–0.90 mm (0.031–
0.035 in)
Engine Drive Belt Routing
2.5L L4 Engine
3.6L V6 Engine

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
334 Customer Information
.Vehicle make, model, and
model year
. Vehicle Identification
Number (VIN)
. Insurance company and policy
number
. General description of the
damage to the other vehicle
Choose a reputable repair facility
that uses quality replacement parts.
See “Collision Parts” earlier in this
section.
If the airbag has inflated, see What
Will You See after an Airbag
Inflates? 073.
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends
that you take an active role in its
repair. If you have a pre-determined
repair facility of choice, take the
vehicle there, or have it towed there.
Specify to the facility that any
required replacement collision parts
be original equipment parts, either
new Genuine GM parts or recycled original GM parts. Remember,
recycled parts will not be covered by
the GM vehicle warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits,
your insurance company may
initially value the repair using
aftermarket parts. Discuss this with
the repair professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you may be
obligated to have the vehicle
repaired with Genuine GM parts,
even if your insurance coverage
does not pay the full cost.
If another party's insurance
company is paying for the repairs,
you are not obligated to accept a
repair valuation based on that
insurance company's collision policy
repair limits, as you have no
contractual limits with that company.
In such cases, you can have control
of the repair and parts choices as
long as the cost stays within
reasonable limits.
Service Publications
Ordering Information
Service Manuals
Service Manuals have the diagnosis
and repair information on the
engines, transmission, axle,
suspension, brakes, electrical,
steering, body, etc.
Owner Information
Owner publications are written
specifically for owners and intended
to provide basic operational
information about the vehicle. The
Owner
’s Manual includes the
Maintenance Schedule for all
models.
In-Portfolio: Includes a Portfolio,
Owner ’s Manual, and Warranty
Manual.
RETAIL SELL PRICE: $35.00 –
$40.00 (U.S.) plus handling and
shipping fees.
Without Pouch: Owner ’s
Manual only.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
336 Customer Information
To contact NHTSA, you may call
the Vehicle Safety Hotline
toll-free at 1-888-327-4236 (TTY:
1-800-424-9153); go tohttp://
www.safercar.gov; or write to:
Administrator, NHTSA
1200 New Jersey Avenue, S.E.
Washington, D.C. 20590
You can also obtain other
information about motor vehicle
safety from http://
www.safercar.gov
.
Reporting Safety Defects
to the Canadian
Government
If you live in Canada, and you
believe that the vehicle has a
safety defect, notify Transport
Canada immediately, and notify
General Motors of Canada
Company. Call Transport
Canada at 1-800-333-0510;
go to:
www.tc.gc.ca/recalls (English)
www.tc.gc.ca/rappels (French) or write to:
Transport Canada
Motor Vehicle Safety Directorate
Defect Investigations and
Recalls Division
80 Noel Street
Gatineau
,QC J8Z 0A1
Reporting Safety Defects
to General Motors
In addition to notifying NHTSA (or
Transport Canada) in a situation like
this, notify General Motors.
Call 1-800-521-7300, or write:
Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232–5136
In Canada, call 1-800-263-3777
(English) or 1-800-263-7854
(French), or write:
General Motors of Canada
Company
Customer Care Centre, Mail Code:
CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Vehicle Data
Recording and
Privacy
The vehicle has a number of
computers that record information
about the vehicle’s performance and
how it is driven. For example, the
vehicle uses computer modules to
monitor and control engine and
transmission performance, to
monitor the conditions for airbag
deployment and deploy them in a
crash, and, if equipped, to provide
antilock braking to help the driver
control the vehicle. These modules
may store data to help the dealer
technician service the vehicle.
Some modules may also store data
about how the vehicle is operated,
such as rate of fuel consumption or
average speed. These modules may
retain personal preferences, such as
radio presets, seat positions, and
temperature settings.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
340 OnStar
.Obtain and customize the Wi-Fi
hotspot name or SSID and
password, if equipped.
Press
Qto connect to an
Advisor to:
. Verify account information or
update contact information.
. Get driving directions.
. Receive a Diagnostic check of
the vehicle's key operating
systems.
. Receive Roadside Assistance.
. Manage Wi-Fi Settings,
if equipped.
Press
>to get a priority connection
to an OnStar Advisor available 24/
7 to:
. Get help for an emergency.
. Be a Good Samaritan or
respond to an AMBER Alert.
. Get assistance in severe
weather or other crisis situations
and find evacuation routes.
OnStar Services
Emergency
Emergency Services require an
active, OnStar service plan
(excludes Basic Plan). With
Automatic Crash Response, built-in
sensors can automatically alert a
specially trained OnStar Advisor
who is immediately connected in to
the vehicle to help.
Press
>for a priority connection to
an OnStar Advisor who can contact
emergency service providers, direct
them to your exact location, and
relay important information.
With OnStar Crisis Assist, specially
trained Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information during a
crisis.
With Roadside Assistance, Advisors
can locate a nearby service provider
to help with a flat tire, a battery
jump, or an empty gas tank.
Security
If equipped, OnStar provides these
services:
. With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
. With Remote Ignition Block,
if equipped, OnStar can block
the engine from being restarted.
. With Stolen Vehicle Slowdown,
if equipped, OnStar can work
with law enforcement to
gradually slow the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the
vehicle.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
350 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 229
Accessory Power . . . . . . . . . . . . . . . 176
Adaptive Cruise Control . . . . . . . . 195
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 146
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . . . 124
Add-On Electrical Equipment . . . 226
Additional Information
OnStar . . . . . . . . . . . . . . . . . . . . . . . 344
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 316
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 54
Air Cleaner/Filter, Engine . . . . . . . 238
Air Conditioning . . . . . . . . . . . . . . . . 152
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 158
Air Intake . . . . . . . . . . . . . . . . . . . . . . . 158
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 157
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 80
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 73
Passenger Sensing System . . . . 75 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 73
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 73
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 72
Where Are the Airbags? . . . . . . . . 70
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 79
Passenger Status Indicator . . . .116
Readiness Light . . . . . . . . . . . . . . .115
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 79
System Check . . . . . . . . . . . . . . . . . . 68
Alarm Vehicle Security . . . . . . . . . . . . . . . . 42
Alert Lane Change . . . . . . . . . . . . . . . . . 214
Side Blind Zone (SBZA) . . . . . . 213
All-Season Tires . . . . . . . . . . . . . . . . 260
All-Wheel Drive . . . . . . . . . . . . 187, 248
Antilock Brake System (ABS) . . . 187 Warning Light . . . . . . . . . . . . . . . . . 120
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 300
Interior . . . . . . . . . . . . . . . . . . . . . . . . 305

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Index 351
ArmrestRear Seat . . . . . . . . . . . . . . . . . . . . . . 61
Armrest Storage . . . . . . . . . . . . . . . . 101
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 329
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 207
Assistance Systems for Parking and Backing . . . . . . . . . . 204
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 45
Door Locks . . . . . . . . . . . . . . . . . . . . . 39
Forward Braking . . . . . . . . . . . . . . 210
Headlamp System . . . . . . . . . . . . 145
Transmission . . . . . . . . . . . . . . . . . 181
Transmission Fluid . . . . . . . . . . . 238
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 185
Automatic Vehicle Hold (AVH) . . . . . . . . . . . . . . . . . . . . 189
B
BatteryExterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 150
Load Management . . . . . . . . . . . . 149 Battery (cont'd)
Power Protection . . . . . . . . . . . . . 150
Battery - North America . . . . . . . . . . . . .247, 293, 294
Blade Replacement, Wiper . . . . . 249
Brake Parking, Electric . . . . . . . . . . . . . . 188
System Warning Light . . . . . . . . .119
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Antilock . . . . . . . . . . . . . . . . . . . . . . . 187
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 189
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 161 Automatic Forward . . . . . . . . . . . 210
Braking System Front Pedestrian (FPB) . . . . . . . .211
Break-In, New Vehicle . . . . . . . . . . 170
Bulb Replacement Headlamp Aiming . . . . . . . . . . . . . 251
Headlamps . . . . . . . . . . . . . . . . . . . 251
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 251
License Plate Lamps . . . . . . . . . 252
Taillamps, Turn Signal,
Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 251
Buying New Tires . . . . . . . . . . . . . . . 274
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 106
California Fuel Requirements . . . . . . . . . . . 218
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 229
California Proposition
65 Warning . . . . . . . 228, 247, 293, 294,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 323
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 180
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Winter Driving . . . . . . . . . . . . . . . . 165
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . 101
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 101
Chains, Tire . . . . . . . . . . . . . . . . . . . . 278
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . 108
Charging System Light . . . . . . . . . 117

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
352 Index
CheckEngine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . .117
Child Restraints Infants and Young Children . . . . . 82
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . 87
Older Children . . . . . . . . . . . . . . . . . . 81
Securing . . . . . . . . . . . . . . . . . . . . 94, 96
Systems . . . . . . . . . . . . . . . . . . . . . . . . 85
Circuit Breakers . . . . . . . . . . . . . . . . 253
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 300
Interior Care . . . . . . . . . . . . . . . . . . 305
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 152
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Cluster, Instrument . . . . . . . . . . . . . 110
Collision Damage Repair . . . . . . . 332
Compact Spare Tire . . . . . . . . . . . . 292
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 100
Compass . . . . . . . . . . . . . . . . . . . . . . . 106
Compressor Kit, Tire Sealant . . . 280
Connections OnStar . . . . . . . . . . . . . . . . . . . . . . . 341 Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 190
Control of a Vehicle . . . . . . . . . . . . . 161
Convenience Net . . . . . . . . . . . . . . . 102
Convex Mirrors . . . . . . . . . . . . . . . . . . 44
Coolant Engine Temperature Gauge . . .114
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 122
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . 152
Cooling System . . . . . . . . . . . . . . . . . 239
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 331
Cruise Control . . . . . . . . . . . . . . . . . . 193 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Cruise Control, Adaptive . . . . . . . . 195
Cupholders . . . . . . . . . . . . . . . . . . . . . 100
Customer Assistance . . . . . . . . . . . 328 Offices . . . . . . . . . . . . . . . . . . . . . . . . 327
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 328
Customer Information Service PublicationsOrdering Information . . . . . . . . 334
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 325D
Damage Repair, Collision . . . . . . . 332
Danger, Warning, and Caution . . . . 2
Data CollectionInfotainment System . . . . . . . . . . 338
OnStar . . . . . . . . . . . . . . . . . . . . . . . 337
Data Recorders, Event . . . . . . . . . 337
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 145
Defensive Driving . . . . . . . . . . . . . . . 161
Delayed Locking . . . . . . . . . . . . . . . . . 38
Diagnostics
OnStar . . . . . . . . . . . . . . . . . . . . . . . 343
Distracted Driving . . . . . . . . . . . . . . . 160
Dome Lamps . . . . . . . . . . . . . . . . . . . 148
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 125
Delayed Locking . . . . . . . . . . . . . . . . 38
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Locks . . . . . . . . . . . . . . . . . . . . 38
Drive Belt Routing, Engine . . . . . . 324
Drive Systems All-Wheel Drive . . . . . . . . . . 187, 248
Driver Assistance Systems . . . . . 203
Driver Efficiency Gauge . . . . . . . . 114
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . 126

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Index 353
DrivingAssistance Systems . . . . . . . . . . 207
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 221
Defensive . . . . . . . . . . . . . . . . . . . . . 161
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 161
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 164
If the Vehicle is Stuck . . . . . . . . . 166
Loss of Control . . . . . . . . . . . . . . . 163
Off-Road Recovery . . . . . . . . . . . 162
Vehicle Load Limits . . . . . . . . . . . 166
Wet Roads . . . . . . . . . . . . . . . . . . . 163
Winter . . . . . . . . . . . . . . . . . . . . . . . . 165
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 152
E
Electric Parking Brake . . . . . . . . . . 188
Electric Parking Brake Light . . . . 119
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 226
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 254
Fuses and Circuit Breakers . . . 253
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 257
Overload . . . . . . . . . . . . . . . . . . . . . 253 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 340
Energy Information . . . . . . . . . . . . . 126
Engine Air Cleaner/Filter . . . . . . . . . . . . . 238
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . .117
Compartment Overview . . . . . . . 231
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .114
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 122
Cooling System . . . . . . . . . . . . . . . 239
Drive Belt Routing . . . . . . . . . . . . 324
Exhaust . . . . . . . . . . . . . . . . . . . . . . 180
Heater . . . . . . . . . . . . . . . . . . . . . . . . 175
Oil Life System . . . . . . . . . . . . . . . 237
Oil Pressure Light . . . . . . . . . . . . 123
Overheated Protection Operating Mode . . . . . . . . . . . . . 244
Overheating . . . . . . . . . . . . . . . . . . 243
Power Messages . . . . . . . . . . . . . 132
Running While Parked . . . . . . . . 180
Starting . . . . . . . . . . . . . . . . . . . . . . . 172
Entry Lighting . . . . . . . . . . . . . . . . . . . 149
Equipment, Towing . . . . . . . . . . . . . 225
Event Data Recorders . . . . . . . . . . 337
Exit Lighting . . . . . . . . . . . . . . . . . . . . 149 Extended Parking . . . . . . . . . . . . . . . 179
Extender, Seat Belt . . . . . . . . . . . . . . 67
Exterior Lamp Controls . . . . . . . . . 144
Exterior Lamps Off Reminder . . . 145
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 150
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 238
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 145
Flashers, Hazard Warning . . . . . . 146
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 279 Changing . . . . . . . . . . . . . . . . . . . . . 287
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 308
Fluid
Automatic Transmission . . . . . . 238
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 246
Washer . . . . . . . . . . . . . . . . . . . . . . . 245
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 147
Folding Mirrors . . . . . . . . . . . . . . . . . . 45
Forward Automatic Braking . . . . . 210
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 208
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 335