ECU BUICK LACROSSE 2015 Workshop Manual

Black plate (3,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
OnStar 14-3
Security
OnStar provides services including
Stolen Vehicle Assistance, Remote
Ignition Block, and Roadside
Assistance, if equipped. OnStar can
unlock the vehicle doors remotely,
if equipped with automatic door
locks, and can help police locate the
vehicle if it is stolen.
Navigation
OnStar navigation requires a
specific OnStar subscription plan.
Press
Qto receive directions or
have them sent to the vehicle
navigation screen, if equipped.
Destinations can also be forwarded
to the vehicle from MapQuest.com.
Turn-by-Turn Navigation
1. PressQto connect to a live
Advisor.
2. Request directions.
3. Directions are downloaded to the vehicle. 4. Follow the voice-guided
commands.
Using Voice Commands
During a Planned Route
Cancel Route
1. Press
=. System responds:
“OnStar ready,” then a tone. Say
“Cancel route.” System
responds: “Do you want to
cancel directions?”
2. Say “Yes.”System responds:
“OK, request completed, thank
you, goodbye.”
Route Preview
1. Press
=. System responds:
“OnStar ready,” then a tone.
2. Say “Route preview.” System
responds with the next three
maneuvers.
Repeat
1. Press
=. System responds:
“OnStar ready,” then a tone. 2. Say
“Repeat.” System responds
with the last direction given, then
responds with “OnStar ready,”
then a tone.
Get My Destination
1. Press
=. System responds:
“OnStar ready,” then a tone.
2. Say “Get my destination.”
System responds with the
address and the distance to the
destination, then responds with
“OnStar ready,” then a tone.
Other Navigation Services
Available from OnStar
OnStar eNav:Subscribers can
send destinations from
MapQuest.com to the vehicle
Turn-by-Turn Navigation or
screen-based navigation system (if
equipped). When ready, the
directions will be downloaded to the
vehicle.

Black plate (10,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
14-10 OnStar
Kai Uwe Rommel, Steve Salisbury,
Dave Smith, Steven M. Schweda,
Christian Spieler, Cosmin Truta,
Antoine Verheijen, Paul von Behren,
Rich Wales, Mike White.
This software is provided“as is,”
without warranty of any kind,
express or implied. In no event shall
Info-ZIP or its contributors be held
liable for any direct, indirect,
incidental, special or consequential
damages arising out of the use of or
inability to use this software.
Permission is granted to anyone to
use this software for any purpose,
including commercial applications,
and to alter it and redistribute it
freely, subject to the following
restrictions:
1. Redistributions of source code must retain the above copyright
notice, definition, disclaimer, and
this list of conditions.
2. Redistributions in binary form (compiled executables) must
reproduce the above copyright
notice, definition, disclaimer, and this list of conditions in
documentation and/or other
materials provided with the
distribution. The sole exception
to this condition is redistribution
of a standard UnZipSFX binary
(including SFXWiz) as part of a
self-extracting archive; that is
permitted without inclusion of
this license, as long as the
normal SFX banner has not
been removed from the binary or
disabled.
3. Altered versions–including, but not limited to, ports to new
operating systems, existing ports
with new graphical interfaces,
and dynamic, shared, or static
library versions–must be plainly
marked as such and must not be
misrepresented as being the
original source. Such altered
versions also must not be
misrepresented as being
Info-ZIP releases–including, but
not limited to, labeling of the
altered versions with the names
“Info-ZIP” (or any variation thereof, including, but not limited
to, different capitalizations),
“Pocket UnZip,” “WiZ”
or
“MacZip” without the explicit
permission of Info-ZIP. Such
altered versions are further
prohibited from
misrepresentative use of the
Zip-Bugs or Info-ZIP e-mail
addresses or of the
Info-ZIP URL(s).
4. Info-ZIP retains the right to use the names “Info-ZIP,” “Zip,”
“UnZip,” “UnZipSFX,” “WiZ,”
“Pocket UnZip,” “Pocket Zip,”
and “MacZip” for its own source
and binary releases.

Black plate (1,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-23
Active Emergency Braking System . . . . . . . . 1-17, 9-53
Adaptive Cruise Control . . . . . . . 9-39
Adaptive Forward
Lighting (AFL) . . . . . . . . . . . . . . . . . 6-3
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . . 5-25
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 9-68
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-6
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . 11-8
Adjustments Lumbar, Front Seats . . . . . . . . . . . 3-5
Air Cleaner/Filter, Engine . . . . . 10-15
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 8-6
Air Intake . . . . . . . . . . . . . . . . . . . . . . . 8-6
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-6 Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 3-32
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-24
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-26
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-24
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . 3-25
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-23
Where Are the Airbags? . . . . . . 3-22
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-31
Passenger Status Indicator . . . 5-15
Readiness Light . . . . . . . . . . . . . . 5-14
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 3-31
System Check . . . . . . . . . . . . . . . . 3-20
Alarm Vehicle Security . . . . . . . . . . . . . . 2-15
Alert Lane Change . . . . . . . . . . . . . . . . . 9-55
Side Blind Zone (SBZA) . . . . . . 9-54 All-Season Tires . . . . . . . . . . . . . . 10-43
All-Wheel Drive . . . . . . . . . 9-30, 10-28
Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 9-30
Warning Light . . . . . . . . . . . . . . . . . 5-20
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . 10-85
Interior . . . . . . . . . . . . . . . . . . . . . . 10-89
Armrest Rear Seat . . . . . . . . . . . . . . . . . . . . 3-12
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 13-5
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . 9-50
Assistance Systems for Parking and Backing . . . . . . . . . 9-48
Automatic Door Locks . . . . . . . . . . . . . . . . . . . 2-12
Headlamp System . . . . . . . . . . . . . 6-3
Transmission . . . . . . . . . . . . . . . . . 9-27
Transmission Fluid . . . . . . . . . 10-15
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 9-29
Shift Lock ControlFunction Check . . . . . . . . . . . 10-29

Black plate (2,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-27Jump Starting . . . . . . . . 10-78, 10-79
Load Management . . . . . . . . . . . . . 6-7
Power Protection . . . . . . . . . . . . . . 6-8
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-35
Blade Replacement, Wiper . . . 10-30
Brake System Warning Light . . . . . . . . 5-19
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-25
Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-30
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-33
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-26
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-31
System Messages . . . . . . . . . . . . 5-36
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Braking System Active Emergency . . . . . . . . . . . . 1-17
Break-In, New Vehicle . . . . . . . . . 9-14
Bulb Replacement . . . . . . . . . . . . 10-34
Halogen Bulbs . . . . . . . . . . . . . . 10-31
Headlamp Aiming . . . . . . . . . . . 10-31
Headlamps . . . . . . . . . . . . . . . . . 10-31 Bulb Replacement (cont'd)
Headlamps, Front Turn
Signal, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-32
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-31
License Plate Lamps . . . . . . . 10-33
Taillamps, Turn Signal, Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-33
Buying New Tires . . . . . . . . . . . . . 10-58
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-4
California Fuel Requirements . . . . . . . . . . . 9-59
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-3
Canadian Vehicle Owners . . . . . . . . iii
Capacities and
Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-26
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Winter Driving . . . . . . . . . . . . . . . . . 9-8 Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
Center Console Storage . . . . . . . . 4-3
Chains, Tire . . . . . . . . . . . . . . . . . . 10-63
Charging System Light . . . . . . . . 5-16
Check Engine Light . . . . . . . . . . . . . . . . . . 5-16
Ignition
Transmission Lock . . . . . . . . 10-29
Child Restraints Infants and Young
Children . . . . . . . . . . . . . . . . . . . . . 3-35
Lower Anchors and Tethers for Children . . . . . . . . . 3-41
Older Children . . . . . . . . . . . . . . . . 3-33
Securing . . . . . . . . . . . . . . . . 3-49, 3-51
Systems . . . . . . . . . . . . . . . . . . . . . . 3-38
Circuit Breakers . . . . . . . . . . . . . . 10-35
Cleaning Exterior Care . . . . . . . . . . . . . . . 10-85
Interior Care . . . . . . . . . . . . . . . . 10-89
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . 8-1
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Cluster, Instrument . . . . . . . . . . . . . 5-8
Collision Damage Repair . . . . . . 13-8

Black plate (7,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
INDEX i-7
Lamps (cont'd)On Reminder . . . . . . . . . . . . . . . . . 5-25
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-6
Sun Visor . . . . . . . . . . . . . . . . . . . . . . 6-6
Lane Change Alert . . . . . . . . . . . . 9-55
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . 9-57
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Lap-Shoulder Belt . . . . . . . . . . . . . 3-15
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-48
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . 3-41
LED Lighting . . . . . . . . . . . . . . . . . . 10-31
Light Adaptive Forward Lighting
(AFL) Light . . . . . . . . . . . . . . . . . . 5-25
Lighting Adaptive Forward . . . . . . . . . . . . . . 6-3
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Illumination Control . . . . . . . . . . . . 6-5
LED . . . . . . . . . . . . . . . . . . . . . . . . 10-31 Lights
Airbag Readiness . . . . . . . . . . . . . 5-14
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-20
Brake System Warning . . . . . . . 5-19
Charging System . . . . . . . . . . . . . 5-16
Cruise Control . . . . . . . . . . . . . . . . 5-25
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-26
Electric Parking Brake . . . . . . . . 5-20
Engine Coolant Temperature Warning . . . . . . . 5-22
Engine Oil Pressure . . . . . . . . . . 5-23
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Front Fog Lamp . . . . . . . . . . . . . . 5-25
High-Beam On . . . . . . . . . . . . . . . . 5-25
High/Low Beam Changer . . . . . . 6-2
Lane Departure Warning . . . . . . 5-21
Low Fuel Warning . . . . . . . . . . . . 5-24
Safety Belt Reminders . . . . . . . . 5-14
Security . . . . . . . . . . . . . . . . . . . . . . 5-24
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . 5-20
StabiliTrak
®OFF . . . . . . . . . . . . . 5-22 Lights (cont'd)
Tire Pressure . . . . . . . . . . . . . . . . . 5-23
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 5-22
Traction Off . . . . . . . . . . . . . . . . . . . 5-21
Limited-Slip Differential . . . . . . . . 9-36
Locks Automatic Door . . . . . . . . . . . . . . . 2-12
Delayed Locking . . . . . . . . . . . . . . 2-12
Door . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Lockout Protection . . . . . . . . . . . . 2-12
Power Door . . . . . . . . . . . . . . . . . . . 2-11
Safety . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Loss of Control . . . . . . . . . . . . . . . . . 9-6
Low Fuel Warning Light . . . . . . . . 5-24
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-41
Lumbar Adjustment . . . . . . . . . . . . . 3-5 Front Seats . . . . . . . . . . . . . . . . . . . . 3-5

Black plate (8,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
i-8 INDEX
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . .11-14
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 11-8
Maintenance Schedule . . . . . . . . 11-2 Recommended Fluids
and Lubricants . . . . . . . . . . . . .11-12
Malfunction Indicator Lamp . . . . 5-16
Manual Mode . . . . . . . . . . . . . . . . . . 9-29
Memory Features . . . . . . . . . . . . . . . 1-8
Memory Seats . . . . . . . . . . . . . . . . . . 3-7
Messages Airbag System . . . . . . . . . . . . . . . . 5-42
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 5-35
Brake System . . . . . . . . . . . . . . . . 5-36
Compass . . . . . . . . . . . . . . . . . . . . . 5-36
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-37
Engine Cooling System . . . . . . . 5-38
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-38
Engine Power . . . . . . . . . . . . . . . . 5-39
Fuel System . . . . . . . . . . . . . . . . . . 5-39
Key and Lock . . . . . . . . . . . . . . . . . 5-39 Messages (cont'd)
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
Object Detection System . . . . . 5-40
Ride Control System . . . . . . . . . . 5-42
Security . . . . . . . . . . . . . . . . . . . . . . 5-43
Service Vehicle . . . . . . . . . . . . . . . 5-43
Starting the Vehicle . . . . . . . . . . . 5-43
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43
Transmission . . . . . . . . . . . . . . . . . 5-44
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-35
Vehicle Speed . . . . . . . . . . . . . . . . 5-44
Window . . . . . . . . . . . . . . . . . . . . . . . 5-44
Mirrors Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . 2-20
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-18
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-19
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-19
Manual Rearview . . . . . . . . . . . . . 2-20
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Tilt in Reverse . . . . . . . . . . . . . . . . 2-19
Mirrors, Interior Rearview . . . . . . 2-19
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-51
N
NavigationOnStar®. . . . . . . . . . . . . . . . . . . . . . 14-3
Net, Convenience . . . . . . . . . . . . . . 4-3
New Vehicle Break-In . . . . . . . . . . 9-14
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . 5-40
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-11
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil
Engine . . . . . . . . . . . . . . . . . . . . . . .10-11
Engine Oil Life System . . . . . 10-13
Messages . . . . . . . . . . . . . . . . . . . . 5-38
Pressure Light . . . . . . . . . . . . . . . . 5-23
Older Children, Restraints . . . . . 3-33
Online Owner Center . . . . . . . . . . 13-4
OnStar . . . . . . . . . . . . . . . . . . . . . . . 13-15
OnStar
®
System, In Brief . . . . . . . . . . . . . . 1-23

Black plate (9,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
INDEX i-9
OnStar®Additional
Information . . . . . . . . . . . . . . . . . . . 14-6
OnStar
®Connections . . . . . . . . . . 14-4
OnStar®Emergency . . . . . . . . . . . 14-2
OnStar®Navigation . . . . . . . . . . . . 14-3
OnStar®Overview . . . . . . . . . . . . . 14-1
OnStar®Security . . . . . . . . . . . . . . 14-3
OnStar®Vehicle
Diagnostics . . . . . . . . . . . . . . . . . . 14-6
Operating Mode Overheated Engine
Protection . . . . . . . . . . . . . . . . . 10-23
Ordering Service Publications . . . . . . . . .13-11
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . 10-23
Overheating, Engine . . . . . . . . . . 10-21
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 9-24
Shifting Out of . . . . . . . . . . . . . . . . 9-25
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 9-31
Brake and P (Park)Mechanism Check . . . . . . . . 10-29
Over Things That Burn . . . . . . . 9-25
Parking or Backing Assistance Systems . . . . . . . . . . 9-48
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 5-15
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Passenger Sensing System . . . 3-26
Perchlorate Materials
Requirements, California . . . . . 10-3
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-45 Power
Door Locks . . . . . . . . . . . . . . . . . . . 2-11
Flows . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Protection, Battery . . . . . . . . . . . . . 6-8
Retained Accessory (RAP) . . . 9-23
Seat Adjustment . . . . . . . . . . . . . . . 3-5
Steering Fluid . . . . . . . . . . . . . . . 10-23
Windows . . . . . . . . . . . . . . . . . . . . . 2-20
Pregnancy, Using Safety
Belts . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Privacy Vehicle Data Recording . . . . . 13-14
Program Courtesy Transportation . . . . . . 13-7
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . 10-3

Black plate (11,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
INDEX i-11
SeatsAdjustment, Front . . . . . . . . . . . . . . 3-4
Head Restraints . . . . . . . . . . . . . . . 3-2
Heated and Ventilated Front . . . 3-9
Lumbar Adjustment, Front . . . . . 3-5
Memory . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Power Adjustment, Front . . . . . . 3-5
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Reclining Seatbacks . . . . . . . . . . . 3-6
Securing Child Restraints . . . . . . . . . . . . . . 3-49, 3-51
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Messages . . . . . . . . . . . . . . . . . . . . 5-43
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-3
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 2-15
Vehicle Alarm . . . . . . . . . . . . . . . . . 2-15
Selective Ride Control . . . . . . . . . 9-36
Service . . . . . . . . . . . . . . . . . . . . . . . . . 8-7 Accessories andModifications . . . . . . . . . . . . . . . . 10-3
Doing Your Own Work . . . . . . . . 10-4
Engine Soon Light . . . . . . . . . . . . 5-16
Maintenance Records . . . . . . .11-14 Service (cont'd)
Maintenance, General
Information . . . . . . . . . . . . . . . . . . 11-1
Parts Identification Label . . . . . 12-1
Publications Ordering
Information . . . . . . . . . . . . . . . . .13-11
Scheduling Appointments . . . . . 13-7
Vehicle Messages . . . . . . . . . . . . 5-43
Service Electric Parking
Brake Light . . . . . . . . . . . . . . . . . . . 5-20
Services Special Application . . . . . . . . . . . 11-8
Servicing the Airbag . . . . . . . . . . . 3-31
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . 10-29
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 9-24
Out of Park . . . . . . . . . . . . . . . . . . . 9-25
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . . 9-54
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 6-4 Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . 10-77
Special Application Services . . . 11-8
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 12-2
Speedometer . . . . . . . . . . . . . . . . . . 5-11
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 5-22
Start Assist, Hills . . . . . . . . . . . . . . 9-33
Start Vehicle, Remote . . . . . . . . . . 2-9
Starter Switch Check . . . . . . . . . 10-28
Starting the Engine . . . . . . . . . . . . 9-18
Starting the Vehicle Messages . . . . . . . . . . . . . . . . . . . . 5-43
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-4 Fluid, Power . . . . . . . . . . . . . . . . 10-23
Heated Wheel . . . . . . . . . . . . . . . . . 5-3
Wheel Adjustment . . . . . . . . . . . . . 5-2
Wheel Controls . . . . . . . . . . . . . . . . 5-2
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . 10-33

Black plate (13,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
INDEX i-13
TractionControl System (TCS)/
StabiliTrak
®Light . . . . . . . . . . . . 5-22
Limited-Slip Differential . . . . . . . 9-36
Off Light . . . . . . . . . . . . . . . . . . . . . . 5-21
Selective Ride Control . . . . . . . . 9-36
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . 9-34
Trailer Towing . . . . . . . . . . . . . . . . . . 9-66, 9-67
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 9-27
Fluid, Automatic . . . . . . . . . . . . 10-15
Messages . . . . . . . . . . . . . . . . . . . . 5-44
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . 13-7
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Turn Signal Bulb Replacement . . . . . . . . . . 10-33
U
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 10-60
Universal Remote System . . . . . 5-51 Operation . . . . . . . . . . . . . . . . . . . . . 5-53
Programming . . . . . . . . . . . . . . . . . 5-51
Using This Manual . . . . . . . . . . . . . . . . iii
V
Vehicle
Alarm System . . . . . . . . . . . . . . . . 2-15
Canadian Owners . . . . . . . . . . . . . . . iii
Control . . . . . . . . . . . . . . . . . . . . . . . . 9-3
IdentificationNumber (VIN) . . . . . . . . . . . . . . . 12-1
Load Limits . . . . . . . . . . . . . . . . . . . 9-10
Messages . . . . . . . . . . . . . . . . . . . . 5-35
Personalization . . . . . . . . . . . . . . . 5-45
Remote Start . . . . . . . . . . . . . . . . . . 2-9
Security . . . . . . . . . . . . . . . . . . . . . . 2-15
Speed Messages . . . . . . . . . . . . . 5-44
Towing . . . . . . . . . . . . . . . . . . . . . . 10-82
Vehicle Ahead Indicator . . . . . . . 5-21 Vehicle Care
Storing the Tire Sealant
and Compressor Kit . . . . . . . 10-72
Tire Pressure . . . . . . . . . . . . . . . 10-50
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . 13-14
Vehicle Diagnostics
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-6
Ventilation, Air . . . . . . . . . . . . . . . . . . 8-6
Visors . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 10-34
W
WarningBrake System Light . . . . . . . . . . . 5-19
Lane Departure (LDW) . . . . . . . 9-57
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . 5-7
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . iv Cautions and Danger . . . . . . . . . . . .iv
Hazard Flashers . . . . . . . . . . . . . . . 6-4
Washer Fluid . . . . . . . . . . . . . . . . . 10-24