
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Vehicle Care 265
Light Truck (LT-Metric) Tire:A
tire used on light duty trucks and
some multipurpose passenger
vehicles.
Load Index
:An assigned
number ranging from 1 to 279
that corresponds to the load
carrying capacity of a tire.
Maximum Inflation Pressure
:
The maximum air pressure to
which a cold tire can be inflated.
The maximum air pressure is
molded onto the sidewall.
Maximum Load Rating
:The
load rating for a tire at the
maximum permissible inflation
pressure for that tire.
Maximum Loaded Vehicle
Weight
:The sum of curb
weight, accessory weight,
vehicle capacity weight, and
production options weight. Normal Occupant Weight
:The
number of occupants a vehicle
is designed to seat multiplied by
68 kg (150 lb). See Vehicle Load
Limits 0166.
Occupant Distribution
:
Designated seating positions.
Outward Facing Sidewall
:The
side of an asymmetrical tire that
has a particular side that faces
outward when mounted on a
vehicle. The side of the tire that
contains a whitewall, bears
white lettering, or bears
manufacturer, brand, and/or
model name molding that is
higher or deeper than the same
moldings on the other sidewall
of the tire.
Passenger (P-Metric) Tire
:A
tire used on passenger cars and
some light duty trucks and
multipurpose vehicles.
Recommended Inflation
Pressure
:Vehicle
manufacturer's recommended tire inflation pressure as shown
on the tire placard.
See
Tire Pressure 0266 and
Vehicle Load Limits 0166.
Radial Ply Tire
:A pneumatic
tire in which the ply cords that
extend to the beads are laid at
90 degrees to the centerline of
the tread.
Rim
:A metal support for a tire
and upon which the tire beads
are seated.
Sidewall
:The portion of a tire
between the tread and the bead.
Speed Rating
:An
alphanumeric code assigned to
a tire indicating the maximum
speed at which a tire can
operate.
Traction
:The friction between
the tire and the road surface.
The amount of grip provided.
Tread
:The portion of a tire that
comes into contact with
the road.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Vehicle Care 293
Do not mix the compact spare tire or
wheel with other wheels or tires.
They will not fit. Keep the spare tire
and its wheel together.
Caution
Tire chains will not fit the compact
spare. Using them can damage
the vehicle and the chains. Do not
use tire chains on the compact
spare.
Jump Starting
Jump Starting - North
America (On-board with
eAssist Only)
If the vehicle fails to crank, it may
be jump started by using the eAssist
battery to charge the 12-volt battery.
Use the following procedure to
activate the on-board jump start
using the DIC controls.
DIC Buttons
With the brake pedal not applied,
press and hold the ENGINE START/
STOP button for more than five seconds. This will place the
vehicle in the Service Mode.
Proceed as follows:
1. Press
Sthen scrollyorz
until the Settings menu
displays.
2. Press
Vto enter the
Settings menu.
3. Press
Tthen scrollyorz
until Jump Start displays.
4. Press
Vto activate the jump
start.
5. The system will then ask for confirmation. If Yes is selected,
the jump start will begin and
the display will show WAIT TO
START.
6. When the jump start is complete, the display will show
ATTEMPT START or JUMP
START DISABLED.
If the vehicle is started, the
on-board jump start function will be
automatically disabled. If the vehicle
cranks but does not start, the
procedure may be repeated again.

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
Customer Information 335
RETAIL SELL PRICE:
$25.00 (U.S.) plus handling and
shipping fees.
Current and Past Models
Service and Owner publications are
available for many current and past
model year GM vehicles.
ORDER TOLL FREE:
1-800-551-4123 Monday–Friday
8:00 AM –6:00 PM Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), see
Helm, Inc. at: www.helminc.com.
Or write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Prices are subject to change without
notice and without incurring
obligation. Allow ample time for
delivery.
All listed prices are quoted in U.S.
funds. Make checks payable in U.S.
funds.
Radio Frequency
Statement
This vehicle has systems that
operate on a radio frequency that
complies with Part 15/Part 18 of the
Federal Communications
Commission (FCC) rules and with
Innovation, Science and Economic
Development (ISED) Canada's
RSP-100 / license-exempt RSS's /
ICES-001.
Operation is subject to the following
two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received, including
interference that may cause
undesired operation of the
device.
Changes or modifications to any of
these systems by other than an
authorized service facility could void
authorization to use this equipment.
Reporting Safety
Defects
Reporting Safety Defects
to the United States
Government
If you believe that your vehicle
has a defect which could cause
a crash or could cause injury or
death, you should immediately
inform the National Highway
Traffic Safety Administration
(NHTSA) in addition to notifying
General Motors.
If NHTSA receives similar
complaints, it may open an
investigation, and if it finds that
a safety defect exists in a group
of vehicles, it may order a recall
and remedy campaign.
However, NHTSA cannot
become involved in individual
problems between you, your
dealer, or General Motors.

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

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
356 Index
Lights (cont'd)Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 122
Traction Off . . . . . . . . . . . . . . . . . . . 121
Locks Automatic Door . . . . . . . . . . . . . . . . . 39
Delayed Locking . . . . . . . . . . . . . . . . 38
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Lockout Protection . . . . . . . . . . . . . . 39
Power Door . . . . . . . . . . . . . . . . . . . . . 38
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Loss of Control . . . . . . . . . . . . . . . . . 163
Low Fuel Warning Light . . . . . . . . . 123
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 87
Lumbar Adjustment . . . . . . . . . . . . . . 54 Front Seats . . . . . . . . . . . . . . . . . . . . . 54
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 321
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 316
Maintenance Schedule . . . . . . . . . 311 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 319 Malfunction Indicator Lamp . . . . . 117
Manual Mode . . . . . . . . . . . . . . . . . . . 185
Massage . . . . . . . . . . . . . . . . . . . . . . . . 59
Memory Features . . . . . . . . . . . . . . . . 11
Memory Seats . . . . . . . . . . . . . . . . . . . 55
Messages
Engine Power . . . . . . . . . . . . . . . . 132
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 132
Vehicle Speed . . . . . . . . . . . . . . . . 133
Mirrors Automatic Dimming . . . . . . . . . . . . . 45
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . . . 46
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 44
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 45
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 45
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Tilt in Reverse . . . . . . . . . . . . . . . . . . 45
Mirrors, Interior Rearview . . . . . . . . 46
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 268
N
Navigation
OnStar . . . . . . . . . . . . . . . . . . . . . . . 341
Net, Convenience . . . . . . . . . . . . . . 102
New Vehicle Break-In . . . . . . . . . . . 170
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 112
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . 162
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . . . 234
Engine Oil Life System . . . . . . . 237
Pressure Light . . . . . . . . . . . . . . . . 123
Older Children, Restraints . . . . . . . 81
Online Owner Center . . . . . . . . . . . 328
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 337
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 344
OnStar Connections . . . . . . . . . . . . 341
OnStar Diagnostics . . . . . . . . . . . . . 343
OnStar Emergency . . . . . . . . . . . . . 340
OnStar Navigation . . . . . . . . . . . . . . 341
OnStar Overview . . . . . . . . . . . . . . . 339
OnStar Security . . . . . . . . . . . . . . . . 340
Operating Mode
Overheated EngineProtection . . . . . . . . . . . . . . . . . . . 244
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 147
Ordering Service Publications . . . . . . . . . . 334
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 106

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Index 357
Overheated EngineProtection Operating Mode . . . . 244
Overheating, Engine . . . . . . . . . . . . 243
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 176
Shifting Out of . . . . . . . . . . . . . . . . 177
Parking Extended . . . . . . . . . . . . . . . . . . . . . 179
Over Things That Burn . . . . . . . 179
Parking Assist . . . . . . . . . . . . . . . . . . 204
Parking or Backing
Assistance Systems . . . . . . . . . . 204
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 116
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Passenger Sensing System . . . . . 75
Perchlorate Materials Requirements, California . . . . . . 229
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 133
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 38
Flows . . . . . . . . . . . . . . . . . . . . . . . . . 125
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Outlets . . . . . . . . . . . . . . . . . . . . . . . 106
Protection, Battery . . . . . . . . . . . . 150 Power (cont'd)
Retained Accessory (RAP) . . . 176
Seat Adjustment . . . . . . . . . . . . . . . . 53
Windows . . . . . . . . . . . . . . . . . . . . . . . 46
Pregnancy, Using Seat Belts . . . . 66
Privacy Vehicle Data Recording . . . . . . . 336
Program Courtesy Transportation . . . . . . 331
Proposition 65 Warning,
California . . . . . . . . . 228, 247, 293, 294,
Back Cover
R
Radio Frequency Statement . . . . 335
Reading Lamps . . . . . . . . . . . . . . . . . 148
Rear Seat Armrest . . . . . . . . . . . . . . . 61
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 59
Rear Vision Camera (RVC) . . . . . 204
Rear Window Sunshade . . . . . . . . . 49
Rearview Mirrors Automatic Dimming . . . . . . . . . . . . . 46
Reclining Seatbacks . . . . . . . . . . . . . 54
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 319
Records
Maintenance . . . . . . . . . . . . . . . . . . 321 Recreational Vehicle Towing . . . . 298
Reimbursement Program,
GM Mobility . . . . . . . . . . . . . . . . . . . 329
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . . . 34
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maintenance . . . . . . . . . . . . . . . . . . 320
Replacing Airbag System . . . . . . . . 80
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . 94
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 68
Reporting Safety Defects Canadian Government . . . . . . . . 336
General Motors . . . . . . . . . . . . . . . 336
U.S. Government . . . . . . . . . . . . . 335
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 86
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 176
Reverse Tilt Mirrors . . . . . . . . . . . . . . 45
Ride Control Systems Selective . . . . . . . . . . . . . . . . . . . . . 192
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 163