service BUICK LACROSSE 2010 Owner's Manual

2010 Buick LaCrosse Owner ManualM
Bulb Replacement . . . . . . . . . . . . 9-33
Electrical System . . . . . . . . . . . . . 9-38
Wheels and Tires . . . . . . . . . . . . . 9-46
Jump Starting . . . . . . . . . . . . . . . . 9-75
Towing . . . . . . . . . . . . . . . . . . . . . . . 9-79
Appearance Care . . . . . . . . . . . . . 9-82
Service and Maintenance . . . 10-1
General Information . . . . . . . . . . 10-1
Scheduled Maintenance . . . . . . 10-2
Recommended Fluids,
Lubricants, and Parts . . . . . . . 10-7
Maintenance Records . . . . . . . 10-10
Technical Data . . . . . . . . . . . . . . . 11-1
Vehicle Identification . . . . . . . . . . 11-1
Vehicle Data . . . . . . . . . . . . . . . . . . 11-2
Customer Information . . . . . . . 12-1
Customer Information . . . . . . . . 12-1
Reporting Safety Defects . . . . 12-13
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . 12-15
Index . . . . . . . . . . . . . . . . . . . . . i-1

Introduction v
A circle with a slash through it is a
safety symbol which means“Do
Not,” “Do not do this” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message, gage,
or indicator.
M: This symbol is shown when
you need to see your owner manual
for additional instructions or
information.
*: This symbol is shown when
you need to see a service manual
for additional instructions or
information. Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the index.
9:
Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls
or OnStar®
$: Brake System Warning Light
":Charging System
I:Cruise Control
B: Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.: Fuel Gage
+:Fuses
i: Headlamp High/Low-Beam
Changer
j: LATCH System Child
Restraints
*: Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
d:Traction Control
M:Windshield Washer Fluid

Keys, Doors and Windows 1-3
vehicle. If the vehicle has the
keyless ignition, the key can be
used for the locks.
Press the button on the RKE
transmitter to extend the key. Press
the button and the key blade to
retract the key.
See your dealer/retailer if a new key
is needed.
Notice:If you ever lock your keys
in the vehicle, you may have to
damage the vehicle to get in.
Be sure you have spare keys. If you are locked out of the vehicle,
see
Roadside Assistance Program
(US, Can)
on page 12‑6or
OnStar®Systemon page 4‑43.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement
(US, Can)on page 12‑16for
information regarding Part 15 of
the Federal Communications
Commission (FCC) Rules and
RSS-210/211 of Industry and
Science Canada.
Changes or modifications to this
system by other than an authorized
service facility could void
authorization to use this equipment.
If there is a decrease in the RKE
operating range:
.Check the distance. The
transmitter may be too far from
the vehicle.
.Check the location. Other
vehicles or objects may be
blocking the signal.
.Check the transmitter's battery.
See “Battery Replacement” later
in this section.
.If the transmitter is still not
working correctly, see your
dealer/retailer or a qualified
technician for service.
Remote Keyless Entry
(RKE) System Operation
(Key Access)
The transmitter functions will work
up to 20 m (65 feet) away from the
vehicle. On vehicles with remote
start the distance will be greater.
Keep in mind that other conditions,
such as those previously stated, can
impact the performance of the
transmitter.

1-14 Keys, Doors and Windows
the system. Only the correct key
starts the vehicle. The vehicle may
not start if the key is damaged.
The security light, located in the
instrument panel cluster, comes on
if there is a problem with arming or
disarming the theft-deterrent
system.
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on there is a
problem with the system. Turn the
ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged
or the light continues to stay on, try
another ignition key.If the engine still does not start with
the other key, the vehicle needs
service. If the vehicle does start, the
first key may be damaged. See your
dealer/retailer who can service the
theft-deterrent system and have a
new key made.
Do not leave the key or device that
disarms or deactivates the theft
deterrent system in the vehicle.
Immobilizer Operation
(Keyless Access)
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the transmitter
leaves the vehicle.
The immobilization system is
disarmed when the ignition button is
pushed in and a valid transmitter is
found in the vehicle.
The security light, located in the
instrument panel cluster, comes on
if there is a problem with arming or
disarming the theft-deterrent
system.
The system has one or more
transmitters that are matched to an
immobilizer control unit in your
vehicle. Only a correctly matched
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start your
vehicle.
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on there is a
problem with the system. Turn the
ignition off and try again.

Keys, Doors and Windows 1-15
If the keyless access transmitter
appears to be undamaged, try
another keyless access transmitter.
Or, you may try placing the
transmitter in the transmitter pocket
located in the center console. See
“No Remote Detected”underKey
and Lock Messages on page 4‑36.
If the engine does not start with the
other transmitter or when the
transmitter is on the pocket in the
center console, your vehicle needs
service. See your dealer/retailer
who can service the theft-deterrent
system and have a new transmitter
programmed to the vehicle.
Do not leave the key or device that
disarms or deactivates the theft
deterrent system in the vehicle.Exterior Mirrors
Power Mirrors
To adjust the mirrors:
1. Turn the control knob to the L (left) or R (right) selecting the
driver or passenger mirror.
2. Push the control knob to the left, right, up, or down to adjust the
mirror. Vehicles with the memory feature
can store a preferred mirror position.
See
“Memory Seats” underPower
Seat Adjustment
on page 2‑4for
more information.
Folding Mirrors
Manual Foldaway Mirrors
Vehicles with manual folded mirrors
are folded inward to prevent
damage when going through an
automatic car wash. To fold, pull the
mirror toward the vehicle. Push the
mirror outward, to return it to the
original position.
Automatic Dimming Feature
The driver outside mirror
automatically adjusts for the glare of
the headlamps behind you.

1-16 Keys, Doors and Windows
Turn Signal Indicator
The vehicle might have a turn signal
indicator lamp that is built into the
mirror housing. The turn signal lamp
flashes with the use of the vehicle's
turn signal and hazard flashers.
Heated Mirrors
For vehicles with heated mirrors:
<(Rear Window Defogger):
Press to heat the mirrors.
See “Rear Window Defogger” under
Automatic Climate Control System
on page 7‑1for more information.
Park Tilt Mirrors
If the vehicle has the memory
package, the outside mirrors have a
park tilt feature. This feature tilts the
outside mirrors to a preselected
position when the vehicle is in
R (Reverse). This allows the driver
to view the curb for parallel parking.
The passenger and driver mirror
returns to its original position when
the vehicle is shifted out of
R (Reverse), or the ignition is turned
off or to OFF/LOCK.
This feature can be turned on or off
through the Driver Information
Center (DIC). See Vehicle
Personalization
on page 4‑38for
more information.
Interior Mirrors
Manual Rearview Mirror
Adjust this mirror for a clear view of
the area behind the vehicle. Hold
the mirror in the center to move it
up, down, or side-to-side. To reduce
headlamp glare during night-time
use, move the lever at the bottom of
the mirror to the right.
Vehicles with OnStar
®have three
additional control buttons located at
the bottom of the mirror. See your
dealer/retailer for more information
on the system and how to subscribe
to OnStar. See OnStar
®Systemon
page 4‑43for more information
about the services OnStar provides.

Seats and Restraints 2-5
Using the Remote Keyless Entry
(RKE) transmitter to enter the
vehicle with the remote recall
memory feature on causes
automatic seat and mirror
adjustment associated with that
transmitter. There is no adjustment
when the position has not been
changed by another seating
position.
To stop recall movement of the
memory feature at any time, press
one of the power seat controls,
memory buttons, or power mirror
buttons.
If something has blocked the driver
seat while recalling a memory
position, the driver seat recall may
stop working. If this happens, press
the appropriate control for the area
that is not recalling for two seconds,
after the obstruction is removed.Then try recalling the memory
position again by pressing the
appropriate memory button. If the
memory position is still not being
recalled, see your dealer/retailer for
service.
Easy Exit Seat
With this feature, the driver seat
automatically moves back to give
the driver more room to exit when
the ignition is turned to OFF and the
driver door is opened.
Lumbar Adjustment
To increase or decrease lumbar
support, press and hold the front or
rear of the round control knob.
To raise or lower lumbar support,
press and hold the top or bottom of
the round control knob.
Release the control knob when the
seatback reaches the desired level
of lumbar support.
See
Power Seat Adjustment
on
page 2‑4for more information.

2-32 Seats and Restraints
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the right front
passenger airbag.
.Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for your vehicle covers the need
to replace other parts.
.The vehicle has a crash sensing
and diagnostic module which
records information after a
crash. SeeVehicle Data
Recording and Privacy
on
page 12‑15and Event Data
Recorders on page 12‑15.
.Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer/retailer
for service.
Passenger Sensing
System
The vehicle has a passenger
sensing system for the right front
passenger position. The passenger
airbag status indicator will be visible
on the instrument panel when the
vehicle is started.
The words ON and OFF will be
visible during the system check.
If you are using remote start,
if equipped, to start the vehicle from
a distance you may not see the system check. When the system
check is complete, either the word
ON or the word OFF will be visible.
See
Passenger Airbag Status
Indicator on page 4‑16.
The passenger sensing system
turns off the right front passenger
frontal airbag airbag under certain
conditions. The driver airbags,
seat-mounted side impact
airbag,and roof-rail airbags are not
affected by the passenger sensing
system.
The passenger sensing system
works with sensors that are part of
the right front passenger seat. The
sensors are designed to detect the
presence of a properly-seated
occupant and determine if the right
front passenger frontal airbag and
seat-mounted side impact airbag
should be enabled (may inflate)
or not.

Seats and Restraints 2-35
{WARNING
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. SeeAirbag Readiness
Light
on page 4‑16for more
information, including important
safety information.
If the On Indicator is Lit for a
Child Restraint
If a child restraint has been installed
and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint following the directions provided
by the child restraint
manufacturer and refer to
Securing Child Restraints (Rear
Seat)
on page 2‑55orSecuring
Child Restraints (Front Seat )on
page 2‑57. 5. If, after reinstalling the child
restraint and restarting the
vehicle, the on indicator is still lit,
turn the vehicle off. Then slightly
recline the vehicle seatback and
adjust the seat cushion,
if adjustable, to make sure that
the vehicle seatback is not
pushing the child restraint into
the seat cushion.
Also make sure the child
restraint is not trapped under the
vehicle head restraint. If this
happens, adjust the head
restraint. See Head Restraints
on page 2‑2.
6. Restart the vehicle.
If the on indicator is still lit,
secure the child in the child
restraint in a rear seat position in
the vehicle, and check with your
dealer/retailer.

Seats and Restraints 2-37
operates. We recommend that you
not use seat covers or other
aftermarket equipment except when
approved by GM for your specific
vehicle. SeeAdding Equipment to
the Airbag-Equipped Vehicle
on
page 2‑38for more information
about modifications that can affect
how the system operates.
{WARNING
Stowing of articles under the
passenger seat or between the
passenger seat cushion and
seatback may interfere with the
proper operation of the passenger
sensing system.
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle
should be serviced. There are parts
of the airbag system in several
places around the vehicle. Your
dealer/retailer and the service
manual have information about
servicing the vehicle and the airbag
system. To purchase a service
manual, see Service Publications
Ordering Information on page 12‑12.
{WARNING
For up to 10 seconds after the
ignition is turned off and the
battery is disconnected, an airbag
can still inflate during improper
service. You can be injured if you
are close to an airbag when it
inflates. Avoid yellow connectors.
They are probably part of the
airbag system. Be sure to follow
proper service procedures, and
make sure the person performing
work for you is qualified to do so.