2015 BUICK LACROSSE manual transmission

Black plate (1,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
2015 Buick LaCrosse Owner ManualM
In Brief. . . . . . . . . . . . . . . . . . . . . . . . 1-1
Instrument Panel . . . . . . . . . . . . . . 1-2
Initial Drive Information . . . . . . . . 1-4
Vehicle Features . . . . . . . . . . . . . 1-15
eAssist Features . . . . . . . . . . . . . 1-19
Performance and
Maintenance . . . . . . . . . . . . . . . . 1-21
Keys, Doors, and Windows . . . . . . . . . . . . . . . . . . . . 2-1
Keys and Locks . . . . . . . . . . . . . . . 2-1
Doors . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Vehicle Security . . . . . . . . . . . . . . 2-15
Exterior Mirrors . . . . . . . . . . . . . . . 2-18
Interior Mirrors . . . . . . . . . . . . . . . . 2-19
Windows . . . . . . . . . . . . . . . . . . . . . 2-20
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Seats and Restraints . . . . . . . . . 3-1
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats . . . . . . . . . . . . . . . . . . . . 3-4
Rear Seats . . . . . . . . . . . . . . . . . . . 3-11
Safety Belts . . . . . . . . . . . . . . . . . . 3-12
Airbag System . . . . . . . . . . . . . . . . 3-20
Child Restraints . . . . . . . . . . . . . . 3-33 Storage
. . . . . . . . . . . . . . . . . . . . . . . 4-1
Storage Compartments . . . . . . . . 4-1
Additional Storage Features . . . 4-3
Instruments and Controls . . . . 5-1
Controls . . . . . . . . . . . . . . . . . . . . . . . 5-2
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . 5-7
Information Displays . . . . . . . . . . 5-26
Vehicle Messages . . . . . . . . . . . . 5-35
Vehicle Personalization . . . . . . . 5-45
Universal Remote System . . . . 5-51
Lighting . . . . . . . . . . . . . . . . . . . . . . . 6-1
Exterior Lighting . . . . . . . . . . . . . . . 6-1
Interior Lighting . . . . . . . . . . . . . . . . 6-5
Lighting Features . . . . . . . . . . . . . . 6-6
Infotainment System . . . . . . . . . 7-1
Introduction . . . . . . . . . . . . . . . . . . . . 7-1 Climate Controls
. . . . . . . . . . . . . 8-1
Climate Control Systems . . . . . . 8-1
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-6
Maintenance . . . . . . . . . . . . . . . . . . . 8-6
Driving and Operating . . . . . . . . 9-1
Driving Information . . . . . . . . . . . . . 9-2
Starting and Operating . . . . . . . 9-14
Engine Exhaust . . . . . . . . . . . . . . 9-26
Automatic Transmission . . . . . . 9-27
Drive Systems . . . . . . . . . . . . . . . . 9-30
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-30
Ride Control Systems . . . . . . . . 9-34
Cruise Control . . . . . . . . . . . . . . . . 9-37
Driver Assistance Systems . . . 9-47
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-58
Trailer Towing . . . . . . . . . . . . . . . . 9-63
Conversions and Add-Ons . . . 9-68

Black plate (1,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-1
In Brief
Instrument Panel
Instrument Panel . . . . . . . . . . . . . . 1-2
Initial Drive Information
Initial Drive Information . . . . . . . . 1-4
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 1-4
Remote Vehicle Start . . . . . . . . . 1-4
Door Locks . . . . . . . . . . . . . . . . . . . 1-5
Trunk Release . . . . . . . . . . . . . . . . 1-5
Windows . . . . . . . . . . . . . . . . . . . . . . 1-6
Seat Adjustment . . . . . . . . . . . . . . 1-6
Memory Features . . . . . . . . . . . . . 1-8
Heated and Ventilated Seats . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Head Restraint Adjustment . . . . 1-9
Safety Belts . . . . . . . . . . . . . . . . . . . 1-9
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 1-10
Mirror Adjustment . . . . . . . . . . . . 1-10
Steering Wheel Adjustment . . . . . . . . . . . . . . . . . 1-11 Interior Lighting . . . . . . . . . . . . . . 1-11
Exterior Lighting . . . . . . . . . . . . . 1-12
Windshield Wiper/Washer . . . . 1-13
Climate Controls . . . . . . . . . . . . . 1-14
Transmission . . . . . . . . . . . . . . . . 1-14
Vehicle Features
Infotainment System . . . . . . . . . 1-15
Steering Wheel Controls . . . . . 1-15
Cruise Control . . . . . . . . . . . . . . . 1-15
Driver Information
Center (DIC) . . . . . . . . . . . . . . . 1-15
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . 1-16
Lane Departure Warning (LDW) . . . . . . . . . . . . . 1-16
Lane Change Alert (LCA) . . . . 1-16
Rear Vision
Camera (RVC) . . . . . . . . . . . . . 1-17
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . 1-17
Parking Assist . . . . . . . . . . . . . . . 1-17
Active Emergency Braking System . . . . . . . . . . . . . . . . . . . . . 1-17 Power Outlets . . . . . . . . . . . . . . . 1-17
Universal Remote System . . . 1-18
Sunroof . . . . . . . . . . . . . . . . . . . . . . 1-18
eAssist Features
eAssist®Overview . . . . . . . . . . . 1-19
High Voltage Safety Information . . . . . . . . . . . . . . . . . 1-20
Automatic Engine Start/Stop Feature . . . . . . . . . . . . . . . . . . . . . 1-20
Regenerative Braking . . . . . . . . 1-20
Battery . . . . . . . . . . . . . . . . . . . . . . . 1-21
Service . . . . . . . . . . . . . . . . . . . . . . 1-21
Performance and Maintenance
Traction Control/Electronic Stability Control . . . . . . . . . . . . 1-21
Tire Pressure Monitor . . . . . . . . 1-22
Engine Oil Life System . . . . . . 1-22
E85 or FlexFuel . . . . . . . . . . . . . . 1-23
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . 1-23
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . 1-23
OnStar
®. . . . . . . . . . . . . . . . . . . . . 1-23

Black plate (3,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-3
1.Exterior Lamp Controls on
page 6-1.
Fog Lamps on page 6-4 (If
Equipped).
Instrument Panel Illumination
Control on page 6-5.
Head-Up Display (HUD) on
page 5-31 (If Equipped).
2. Air Vents on page 8-6.
3. Turn Signal Lever. See Turn and
Lane-Change Signals on
page 6-4.
4. Instrument Cluster on page 5-8.
Driver Information Center
Display. See Driver Information
Center (DIC) on page 5-28.
5. Windshield Wiper/Washer on
page 5-3. 6.
Hazard Warning Flashers on
page 6-4.
Lane Departure Warning (LDW)
on page 9-57 (If Equipped).
Rear Parking Assist Button (If
Equipped). See Assistance
Systems for Parking or Backing
on page 9-48.
7. Light Sensor. See Automatic
Headlamp System on page 6-3.
8. Infotainment on page 7-1.
9. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp on page 5-16.
10. Front Storage on page 4-2.
11. Hood Release. See Hood on
page 10-5.
12. Cruise Control on page 9-37.
Forward Collision Alert (FCA)
System on page 9-50 (If
Equipped).
13. Steering Wheel Adjustment on
page 5-2.
14. Horn on page 5-3. 15.
Steering Wheel Controls on
page 5-2 (If Equipped).
Driver Information Center (DIC)
Buttons. See Driver Information
Center (DIC) on page 5-28.
16. Ignition Positions (Key Access)
on page 9-15 orIgnition
Positions (Keyless Access) on
page 9-16.
17. Heated and Ventilated Front
Seats on page 3-9 (If
Equipped).
18. Shift Lever. See Automatic
Transmission on page 9-27.
19. Parking Brake on page 9-31.
Traction Control/Electronic
Stability Control on page 9-34.
20. Dual Automatic Climate Control
System on page 8-1.

Black plate (14,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-14 In Brief
Climate Controls
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
1. Driver and PassengerTemperature Controls
2. Heated and Ventilated Front Seats
3. Fan Control 4. Air Delivery Mode Controls
5. Defrost
6. SYNC (Synchronized
Temperature) 7. Power
8. A/C (Air Conditioning)
9. Recirculation/Auto Recirculation
10. Rear Window Defogger
11. AUTO (Automatic Operation)
See
Dual Automatic Climate Control
System on page 8-1.
Transmission
Automatic Transmission
Driver Shift Control (DSC)
Driver Shift Control (DSC) allows
shifting an automatic transmission
similar to a manual transmission.
DSC can be enabled through the
shift lever. See Manual Mode on
page 9-29.

Black plate (12,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
2-12 Keys, Doors, and Windows
Delayed Locking
This feature delays the locking of
the doors until five seconds after all
doors are closed.
When
Qis pressed on the power
door lock switch while the door is
open, a chime will sound three
times indicating delayed locking is
active.
The doors will lock automatically
five seconds after all doors are
closed. If a door is reopened before
that time, the five-second timer will
reset when all doors are closed
again.
Press
Qon the door lock switch
again or press
Qon the RKE
transmitter to lock doors
immediately.
This feature can also be
programmed. See Vehicle
Personalization on page 5-45.
Automatic Door Locks
The doors will lock automatically
when all doors are closed, the
ignition is on, and the shift lever is
moved out of P (Park).
To unlock the doors:
.PressKon a door.
.Shift the transmission into
P (Park).
Automatic door unlocking can be
programmed through the Driver
Information Center (DIC). See
Vehicle Personalization on
page 5-45.
Lockout Protection
If equipped with pushbutton start
and the vehicle is in ACC/
ACCESSORY or ON/RUN/START,
and locking is requested with the
driver door open, all doors will lock
and only the driver door will unlock. If equipped with a keyed ignition,
and the key is in the ignition when
locking is requested with the driver
door open, all doors will lock and
then the driver door will unlock.
Lockout Protection with the key in
the ignition can be manually
overridden with the driver door open
by pressing and holding
Qon the
power door lock switch.
If Unlocked Door Anti Lockout is
turned on and the vehicle is off, and
locking is requested with the driver
door open, all doors will lock and
only the driver door will unlock. The
Unlocked Door Anti Lockout feature
can be turned on or off using the
vehicle personalization menus. See
Vehicle Personalization on
page 5-45.
Safety Locks
The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.

Black plate (2,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
5-2 Instruments and Controls
Object Detection SystemMessages . . . . . . . . . . . . . . . . . . 5-40
Ride Control System Messages . . . . . . . . . . . . . . . . . . 5-42
Airbag System Messages . . . . 5-42
Security Messages . . . . . . . . . . 5-43
Service Vehicle Messages . . . 5-43
Starting the Vehicle
Messages . . . . . . . . . . . . . . . . . . 5-43
Tire Messages . . . . . . . . . . . . . . . 5-43
Transmission Messages . . . . . 5-44
Vehicle Speed Messages . . . . 5-44
Window Messages . . . . . . . . . . . 5-44
Vehicle Personalization
Vehicle Personalization . . . . . . 5-45
Universal Remote System
Universal Remote System . . . 5-51
Universal Remote System Programming . . . . . . . . . . . . . . . 5-51
Universal Remote System Operation . . . . . . . . . . . . . . . . . . 5-53
Controls
Steering Wheel
Adjustment
To adjust the steering wheel:
1. Pull the lever down.
2. Move the steering wheel up
or down. 3. Pull or push the steering wheel
closer or away from you.
4. Pull the lever up to lock the steering wheel in place.
Do not adjust the steering wheel
while driving.
Steering Wheel Controls
The infotainment system can be
operated by using the steering
wheel controls. See "Steering
Wheel Controls" in the infotainment
manual.

Black plate (12,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
5-12 Instruments and Controls
For eAssist vehicles, when the
ignition is in ON/RUN, the
tachometer indicates the vehicle
status. When pointing to AUTO
STOP, the engine is off but the
vehicle is on and can move. The
engine could auto start at any time.
When the indicator points to OFF,
the vehicle is off.
When the engine is on, the
tachometer will indicate the engine’s
revolutions per minute (rpm). The
tachometer may vary by several
hundred rpm’s, during auto stop
mode, when the engine is shutting
off and restarting.
A slight bump may be felt when the
transmission is determining the
most fuel efficient operating range.
{Caution
If the engine is operated with the
rpm’s in the warning area at the
high end of the tachometer, the
vehicle could be damaged, and(Continued)
Caution (Continued)
the damage would not be covered
by the vehicle warranty. Do not
operate the engine with the rpm’s
in the warning area.
Fuel Gauge
Metric
English
When the ignition is on, the fuel
gauge indicates about how much
fuel is left in the tank.
An arrow on the fuel gauge
indicates the side of the vehicle the
fuel door is on.
When the indicator nears empty, the
low fuel light comes on. There is still
a little fuel left, but the fuel tank
should be filled soon.

Black plate (17,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Instruments and Controls 5-17
If the malfunction indicator lamp
comes on while the engine is
running, this indicates that the OBD
II system has detected a problem
and diagnosis and service might be
required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system also
assists the dealer technician in
correctly diagnosing any
malfunction.
{Caution
If the vehicle is continually driven
with this light on, the emission
controls might not work as well,
the vehicle fuel economy might
not be as good, and the engine
might not run as smoothly. This
could lead to costly repairs that
might not be covered by the
vehicle warranty.
{Caution
Modifications made to the engine,
transmission, exhaust, intake,
or fuel system of the vehicle or
the replacement of the original
tires with other than those of the
same Tire Performance Criteria
(TPC) can affect the vehicle's
emission controls and can cause
this light to come on.
Modifications to these systems
could lead to costly repairs not
covered by the vehicle warranty.
This could also result in a failure
to pass a required Emission
Inspection/Maintenance test. See
Accessories and Modifications on
page 10-3.This light comes on during a
malfunction in one of two ways:
Light Flashing:
A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
If the light continues to flash, find a
safe place to stop and park the
vehicle. Turn the vehicle off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,
follow the previous steps and see
your dealer for service as soon as
possible.