2019 BUICK LACROSSE turn signal

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Driving and Operating 229
Passing
More passing distance is needed
when towing a trailer. The
combination will not accelerate as
quickly and is longer so it is
necessary to go much farther
beyond the passed vehicle before
returning to the lane.
Backing Up
Hold the bottom of the steering
wheel with one hand. To move the
trailer to the left, move that hand to
the left. To move the trailer to the
right, move your hand to the right.
Always back up slowly and,
if possible, have someone
guide you.
Making TurnsCaution
Making very sharp turns while
trailering could cause the trailer to
come in contact with the vehicle.
The vehicle could be damaged.
Avoid making very sharp turns
while trailering. When turning with a trailer, make
wider turns than normal. Do this so
the trailer will not strike soft
shoulders, curbs, road signs, trees,
or other objects. Avoid jerky or
sudden maneuvers. Signal well in
advance.
If the trailer turn signal bulbs burn
out, the arrows on the instrument
cluster will still flash for turns. It is
important to check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a lower
gear
before starting down a long or
steep downgrade. If the
transmission is not shifted down, the
brakes might get hot and no longer
work well.
Vehicles can tow in D (Drive). Shift
the transmission to a lower gear if
the transmission shifts too often
under heavy loads and/or hilly
conditions.
When towing at high altitude on
steep uphill grades, consider the
following: Engine coolant will boil at a lower temperature than at normal
altitudes. If the engine is turned off
immediately after towing at high
altitude on steep uphill grades, the
vehicle may show signs similar to
engine overheating. To avoid this,
let the engine run while parked,
preferably on level ground, with the
automatic transmission in P (Park)
for a few minutes before turning the
engine off. If the overheat warning
comes on, see
Engine Overheating
0 250.
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
234 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 235
California Proposition65 Warning . . . . . . . . . . . . . . . . . 235
California Perchlorate Materials Requirements . . . . . 236
Accessories and Modifications . . . . . . . . . . . . . . . . 236
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 236
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 237
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 238
Engine Oil . . . . . . . . . . . . . . . . . . . . 241
Engine Oil Life System . . . . . . . 244
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 245
Engine Air Cleaner/Filter . . . . . . 245
Cooling System . . . . . . . . . . . . . . 246
Engine Overheating . . . . . . . . . . 250
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . 252
Washer Fluid . . . . . . . . . . . . . . . . . 252
Brakes . . . . . . . . . . . . . . . . . . . . . . . 253
Brake Fluid . . . . . . . . . . . . . . . . . . . 254 Battery - North America . . . . . . 255
All-Wheel Drive . . . . . . . . . . . . . . . 256
Starter Switch Check . . . . . . . . . 256
Wiper Blade Replacement . . . . 256
Windshield Replacement . . . . . 257
Gas Strut(s) . . . . . . . . . . . . . . . . . . 257
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 258
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 258
High Intensity Discharge (HID)
Lighting . . . . . . . . . . . . . . . . . . . . . 258
LED Lighting . . . . . . . . . . . . . . . . . 259
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 259
License Plate Lamp . . . . . . . . . . 259
Electrical System
Electrical System Overload . . . 260
Fuses and Circuit Breakers . . . 261
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 261
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 268
All-Season Tires . . . . . . . . . . . . . . 268
Winter Tires . . . . . . . . . . . . . . . . . . 269 Tire Sidewall Labeling . . . . . . . . 269
Tire Designations . . . . . . . . . . . . . 271
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . 272
Tire Pressure . . . . . . . . . . . . . . . . . 275
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 276
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 276
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 277
Tire Inspection . . . . . . . . . . . . . . . . 280
Tire Rotation . . . . . . . . . . . . . . . . . 281
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 282
Buying New Tires . . . . . . . . . . . . . 282
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 284
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 284
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 286
Wheel Replacement . . . . . . . . . . 286
Tire Chains . . . . . . . . . . . . . . . . . . . 287
If a Tire Goes Flat . . . . . . . . . . . . 287
Tire Sealant and Compressor Kit . . . . . . . . . . . . . 289
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . 295
Tire Changing . . . . . . . . . . . . . . . . 296

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Vehicle Care 259
After an HID headlamp bulb has
been replaced, the beam might be a
slightly different shade than it was
originally. This is normal.
LED Lighting
This vehicle has several LED lamps.
For replacement of any LED lighting
assembly, contact your dealer.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
Driver Side Shown, PassengerSide Similar
1. Stoplamp/Turn Signal
2. Back-Up Lamp
To replace one of these bulbs:
1. Open the trunk. See Trunk
0 41.
2. Remove the fasteners to pull the trunk trim out. 3. Remove and retain the four
nuts fastening the taillamp
assembly to the vehicle body.
4. Remove the taillamp assembly by pulling straight back.
5. Remove the bulb socket by turning it counterclockwise.
6. Remove the old bulb by pulling it straight out.
7. Reverse Steps 1–6 to install.
License Plate Lamp
To replace one of these bulbs:

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
280 Vehicle Care
www.gmtoolsandequipment.com or
call 1-800-GM TOOLS
(1-800-468-6657).
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:1. Set the parking brake.
2. Place the vehicle in Service Mode. See Ignition Positions
0 176.
3. Make sure the Tire Pressure info page option is turned on.
The info pages on the DIC can
be turned on and off through
the Options menu. See Driver
Information Center (DIC) 0131.
4. Use the DIC controls on the right side of the steering wheel
to scroll to the Tire Pressure
screen under the DIC
info page. 5. Press and holdVin the center
of the DIC controls.
The horn sounds twice to
signal the receiver is in relearn
mode and the TIRE
LEARNING ACTIVE message
displays on the DIC screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve
stem. Then press the button to
activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position.
8. Proceed to the passenger side front tire, and repeat the
procedure in Step 7.
9. Proceed to the passenger side rear tire, and repeat the
procedure in Step 7.
10. Proceed to the driver side rear tire, and repeat the procedure
in Step 7. The horn sounds two
times to indicate the sensor identification code has been
matched to the driver side rear
tire, and the TPMS sensor
matching process is no longer
active. The TIRE LEARNING
ACTIVE message on the DIC
display screen goes off.
11. Turn the vehicle off.
12. Set all four tires to the recommended air pressure
level as indicated on the Tire
and Loading Information label.
Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected
for signs of wear or damage at
least once a month.
Replace the tire if:
.The indicators at three or
more places around the tire
can be seen.
.There is cord or fabric
showing through the tire's
rubber.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
352 OnStar
.PressQto speak with an
Advisor.
OnStar or connected 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 or
connected services. Service
involving location information about
the vehicle cannot work unless GPS
signals are available, unobstructed,
and compatible with the OnStar
hardware. OnStar or connected
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 or connected 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
0 345.
Services for People with
Disabilities
Advisors provide services to help
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.
If equipped, TTY mode can be
turned on or off by touching
Settings, then Apps, and then
Phone. When TTY mode is on,
phone calls can be made or
received with OnStar using the
infotainment display.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some
OnStar services. The PIN will need
to be changed the first time when
speaking with an Advisor. To
change the OnStar PIN, contact an
OnStar Advisor by pressing
Qor
calling 1-888-4ONSTAR.
Warranty
OnStar equipment may be
warranted as part of the vehicle
warranty.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
OnStar 353
Languages
The vehicle can be programmed to
respond in multiple languages.
Press
Qand ask for an Advisor.
Advisors are available in English,
Spanish, and French. Available
languages may vary by country.
Potential Issues
OnStar cannot perform Remote
Door Unlock or Stolen Vehicle
Assistance after the vehicle has
been off continuously for 10 days
without an ignition cycle. If the
vehicle has not been started for
10 days, OnStar can contact
Roadside Assistance or a locksmith
to help gain access to the vehicle.
Global Positioning
System (GPS)
. Obstruction of the GPS can
occur in a large city with tall
buildings; in parking garages;
around airports; in tunnels and
underpasses; or in an area with
very dense trees. If GPS signals
are not available, the OnStar
system should still operate to call OnStar. However, OnStar
could have difficulty identifying
the exact location.
. In emergency situations, OnStar
can use the last stored GPS
location to send to emergency
responders.
A temporary loss of GPS can cause
loss of the ability to send a
Turn-by-Turn Navigation route. The
Advisor may give a verbal route or
may ask for a call back after the
vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for
OnStar to send remote signals to
the vehicle. Do not place items over
or near the antenna to prevent
blocking cellular and GPS signal
reception.
Unable to Connect to OnStar
Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message may come on. Press
Qto try the
call again or try again after driving a
few miles into another cellular area.
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features
to function properly. These systems
may not operate if the battery is
discharged or disconnected.
Add-on Electrical Equipment
The OnStar system is integrated
into the electrical architecture of the
vehicle. Do not add any electrical
equipment. See Add-On Electrical
Equipment 0233. Added electrical
equipment may interfere with the
operation of the OnStar system and
cause it to not operate.
Vehicle Software Updates
OnStar or GM may remotely deliver
software updates or changes to the
vehicle without further notice or
consent. These updates or changes
may enhance or maintain safety,

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
362 Index
ArmrestRear Seat . . . . . . . . . . . . . . . . . . . . . . 63
Armrest Storage . . . . . . . . . . . . . . . . 103
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 339
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 214
Assistance Systems for Parking and Backing . . . . . . . . . . 210
Auto Stop Stop/Start System . . . . . . . 178, 179
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 46
Door Locks . . . . . . . . . . . . . . . . . . . . . 39
Forward Braking . . . . . . . . . . . . . . 216
Headlamp System . . . . . . . . . . . . 150
Transmission . . . . . . . . . . . . . . . . . 187
Transmission Fluid . . . . . . . . . . . 245
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 191
B
BatteryExterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 155
Load Management . . . . . . . . . . . . 154 Battery (cont'd)
Power Protection . . . . . . . . . . . . . 155
Battery - North America . . . . . . . . . . . . .255, 301, 302
Blade Replacement, Wiper . . . . . 256
Brake Parking, Electric . . . . . . . . . . . . . . 193
System Warning Light . . . . . . . . 124
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Antilock . . . . . . . . . . . . . . . . . . . . . . . 193
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 195
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Regenerative Braking . . . . . . . . . 196
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 166
Automatic Forward . . . . . . . . . . . 216
Braking System Front Pedestrian (FPB) . . . . . . . 218
Break-In, New Vehicle . . . . . . . . . . 175
Bulb Replacement
Headlamp Aiming . . . . . . . . . . . . . 258
Headlamps . . . . . . . . . . . . . . . . . . . 258
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . 258
License Plate Lamps . . . . . . . . . 259
Taillamps, Turn Signal, Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 259
Buying New Tires . . . . . . . . . . . . . . . 282
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 108
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 236
California Proposition
65 Warning . . . . . . . 235, 255, 301, 302,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . . . 333
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 186
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Winter Driving . . . . . . . . . . . . . . . . 170
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 103
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 103
Chains, Tire . . . . . . . . . . . . . . . . . . . . 287
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . .110
Charging System Light . . . . . . . . . 122
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 122

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Index 369
Replacing LATCH SystemParts after a Crash . . . . . . . . . . . . . 96
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 70
Reporting Safety Defects Canadian Government . . . . . . . . 346
General Motors . . . . . . . . . . . . . . . 346
U.S. Government . . . . . . . . . . . . . 345
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 89
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 181
Reverse Tilt Mirrors . . . . . . . . . . . . . . 46
Ride Control Systems Selective . . . . . . . . . . . . . . . . . . . . . 198
Roads
Driving, Wet . . . . . . . . . . . . . . . . . . 169
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 339
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 50
Rotation, Tires . . . . . . . . . . . . . . . . . . 281
Routing, Engine Drive Belt . . . . . . 334
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 186S
Safety Defects Reporting
Canadian Government . . . . . . . . 346
General Motors . . . . . . . . . . . . . . . 346
U.S. Government . . . . . . . . . . . . . 345
Safety Locks . . . . . . . . . . . . . . . . . . . . . 40
Safety System Check . . . . . . . . . . . . 69
Scheduling Appointments . . . . . . . 341
Sealant Kit, Tire . . . . . . . . . . . . . . . . 289
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 63 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Extender . . . . . . . . . . . . . . . . . . . . . . . . 69
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 64
Lap-Shoulder Belt . . . . . . . . . . . . . . 66
Reminders . . . . . . . . . . . . . . . . . . . . 120
Replacing after a Crash . . . . . . . . 70
Use During Pregnancy . . . . . . . . . . 69
Seats
Head Restraints . . . . . . . . . . . . . . . . 53
Heated and Ventilated Front . . . . 59
Lumbar Adjustment, Front . . . . . . 55
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 56
Power Adjustment, Front . . . . . . . 54
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Reclining Seatbacks . . . . . . . . . . . . 55
Securing Child Restraints . . . . 97, 99 Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 129
OnStar . . . . . . . . . . . . . . . . . . . . . . . 351
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 43
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 43
Selective Ride Control . . . . . . . . . . 198
Service . . . . . . . . . . . . . . . . . . . . . . . . . 163 Accessories andModifications . . . . . . . . . . . . . . . . 236
Doing Your Own Work . . . . . . . . 236
Maintenance Records . . . . . . . . 331
Maintenance, General Information . . . . . . . . . . . . . . . . . . 318
Parts Identification Label . . . . . 332
Scheduling Appointments . . . . . 341
Service Electric Parking
Brake Light . . . . . . . . . . . . . . . . . . . . 125
Services Special Application . . . . . . . . . . . 325
Servicing the Airbag . . . . . . . . . . . . . 81
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 182
Out of Park . . . . . . . . . . . . . . . . . . . 182
Side Blind Zone Alert (SBZA) . . . 220
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 152
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . 300