2013 BUICK LACROSSE headlamp

Black plate (1,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . 10-11
Engine Oil Life System . . . . . 10-13
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-14
Engine Air Cleaner/Filter . . . . 10-15
Cooling System . . . . . . . . . . . . 10-17
Engine Coolant . . . . . . . . . . . . . 10-18
Engine Overheating . . . . . . . . 10-21
Overheated Engine Protection
Operating Mode . . . . . . . . . . . 10-22 Power Steering Fluid (2.4L
L4 Engine and 3.6L
V6 Engine with FWD) . . . . . 10-23
Power Steering Fluid (3.6L V6 Engine with AWD) . . . . . 10-23
Washer Fluid . . . . . . . . . . . . . . . 10-24
Brakes . . . . . . . . . . . . . . . . . . . . . 10-25
Brake Fluid . . . . . . . . . . . . . . . . . 10-26
Battery . . . . . . . . . . . . . . . . . . . . . 10-27
All-Wheel Drive . . . . . . . . . . . . . 10-28
Starter Switch Check . . . . . . . 10-28
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-28
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-29
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-29
Wiper Blade Replacement . . . . . . . . . . . . . . 10-29
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-30
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-31
Halogen Bulbs . . . . . . . . . . . . . . 10-31
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-31 LED Lighting . . . . . . . . . . . . . . . 10-31
Headlamps, Front Turn
Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-31
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . 10-33
License Plate Lamp . . . . . . . . 10-33
Replacement Bulbs . . . . . . . . . 10-34
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-34
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-35
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-35
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-36
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-40
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-42
All-Season Tires . . . . . . . . . . . . 10-43
Winter Tires . . . . . . . . . . . . . . . . 10-43
Summer Tires . . . . . . . . . . . . . . 10-43
Tire Sidewall Labeling . . . . . . 10-44
Tire Designations . . . . . . . . . . . 10-46

Black plate (30,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
10-30 Vehicle Care
To replace the windshield wiper
blade:
1. Pull the windshield wiperassembly away from the
windshield.
2. Lift up on the latch in the middleof the wiper blade where the
wiper arm attaches.
3. With the latch open, pull the wiper blade down toward the
windshield far enough to release
it from the J-hooked end of the
wiper arm. 4. Remove the wiper blade.
Allowing the wiper blade arm to
touch the windshield when no
wiper blade is installed could
damage the windshield. Any
damage that occurs would not
be covered by the vehicle
warranty. Do not allow the wiper
blade to touch the windshield.
5. Reverse Steps 1–3 for wiper blade replacement.
Headlamp Aiming
Headlamp aim has been preset and
should need no further adjustment.
If the vehicle is damaged in a crash,
the headlamp aim may be affected.
If adjustment to the headlamps is
necessary, see your dealer.

Black plate (31,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
Vehicle Care 10-31
Bulb Replacement
For the proper type of replacement
bulbs, seeReplacement Bulbs on
page 10‑34.
For any bulb changing procedure
not listed in this section, contact
your dealer.
Halogen Bulbs
{WARNING
Halogen bulbs have pressurized
gas inside and can burst if you
drop or scratch the bulb. You or
others could be injured. Be sure
to read and follow the instructions
on the bulb package.
High Intensity Discharge
(HID) Lighting
{WARNING
The high intensity discharge
lighting system operates at a very
high voltage. If you try to service
any of the system components,
you could be seriously injured.
Have your dealer or a qualified
technician service them.
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.
Headlamps, Front Turn
Signal and Parking
Lamps
Base Headlamp Assembly
The base model vehicle has a
halogen high-beam headlamp, a
low-beam/Daytime Running Lamp
(DRL) headlamp, and a turn signal/
parking lamp on the headlamp
assembly.
For replacement of the turn signal/
parking lamp bulb on an eAssist
vehicle, contact your dealer.

Black plate (32,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
10-32 Vehicle Care
1. Low-Beam Headlamp/DRL
2. High-Beam Headlamp
3. Parking/Turn Signal Lamp
To replace one of these bulbs:
1. Open the hood. SeeHood on
page 10‑5.
2. If replacing a headlamp bulb, remove the dust cover from the
back of the headlamp housing
by turning counterclockwise
one-quarter turn. 3. If replacing a turn signal/parking
lamp bulb on a non-eAssist
vehicle, remove the close out
panel push pins and close out
panel covering the bulb socket.
4. Remove the bulb socket from the headlamp by turning
counterclockwise
one-quarter turn.
5. Remove the bulb from the socket. If replacing the high/
low-beam bulb, pry the two clips
on either end of the bulb and pull
straight out.
6. Install the new bulb in the socket.
7. Install the bulb socket by turning clockwise one-quarter turn.
8. If a headlamp bulb was replaced, install the dust cover in
the back of the headlamp
housing by turning clockwise
one-quarter turn.
Uplevel Headlamp Assembly
The uplevel model vehicle has a
high intensity discharge (HID) high/
low beam, a dedicated DRL, and a
parking/turn signal lamp on the
headlamp assembly. See High
Intensity Discharge (HID) Lighting
on page 10‑31.
1. DRL Lamp
2. Parking/Turn Signal Lamp
To replace one of these bulbs:
1. Open the hood. See Hood on
page 10‑5.

Black plate (33,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
Vehicle Care 10-33
2. Turn the bulb socketcounterclockwise to remove it
from the headlamp assembly.
3. Pull the bulb straight out from the socket.
4. Push the new bulb into the socket and reinstall the socket
into the headlamp assembly by
turning it clockwise.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
1. Back-Up Lamp 2. Turn Signal Lamp
To replace one of these lamps:
1. Open the trunk. See
Trunk on
page 2‑11.
2. Remove the fasteners and pull back the trunk trim.
3. Remove the four plastic wing nuts holding the taillamp
assembly in place.
4. Pull out the taillamp assembly and disconnect the wiring
harness.
5. Turn the bulb socket counterclockwise to remove it.
6. Pull the old bulb straight out of the bulb socket.
7. Reverse Steps 1–6 to install.
License Plate Lamp
The license plate lamps for this
vehicle are on the trunk lid.
To replace one of these bulbs:
1. Open the trunk. See Trunk on
page 2‑11.
2. Push the end on either of the lamp assemblies (passenger
side shown) and then move the
lamp assembly down to remove
it from the trunk lid.

Black plate (34,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
10-34 Vehicle Care
3. Turn the bulb socket (1)counterclockwise to remove it
from the lamp assembly (3).
4. Pull the bulb (2) straight out of the bulb socket.
5. Push the replacement bulb straight into the bulb socket and
turn the bulb socket clockwise to
install it into the lamp assembly.
6. Move the lamp assembly into the trunk lid, engaging the clip
side first.
7. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.
Replacement Bulbs
Exterior Lamp Bulb
Number
Back-Up Lamp 921LL (W16W)
Daytime Running
Lamp (Uplevel) 3157K LCP
Front Turn Signal/
Parking Lamp 3757NAK
LCP
Headlamp High
Beam (Base) H9
Headlamp Low
Beam (Base) H11LL
License Plate Lamp W5WLL
Rear Turn Signal 3757AKT
For replacement bulbs not listed
here, contact your dealer.
Electrical System
High Voltage Devices and
Wiring
{WARNING
Exposure to high voltage can
cause shock, burns, and even
death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering. Do not probe,
tamper with, cut, or modify high
voltage cable or wiring.

Black plate (35,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
Vehicle Care 10-35
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
To identify and check fuses, circuit
breakers, and relays, seeEngine
Compartment Fuse Block on
page 10‑36 andInstrument Panel
Fuse Block on page 10‑40.

Black plate (38,1)Buick LaCrosse Owner Manual - 2013 - crc - 9/7/12
10-38 Vehicle Care
Mini Fuses Usage16 Run/Crank for eAssist Power
Inverter Module
17 Airbag Module —
Run/Crank
18 Sunshade Module, Vehicle Air
Purification System,
Vented Seats
20 Heated Steering Wheel (non eAssist)
23 Variable Effort Steering (if
equipped) or eAssist
Power Inverter
Module
29 Power Lumbar, Left
30 Power Lumbar, Right or Power Pack
Cooling Fan
(eAssist) Mini Fuses Usage
31 All Wheel Drive, Electronic
Suspension Control
32 Body Control Module 6
33 Heated Seat —
Front
34 Antilock Brake System Valves
35 Amplifier
36 Adaptive Forward Lighting (AFL)
Motors—Battery
37 Right High Beam
38 Left High Beam
46 Cooling Fan Relay Mini Fuses Usage
47 Six Cylinder Engine: Pre Catalytic
Converter Oxygen
Sensor Heater,
Canister Purge
Solenoid. Four
Cylinder Engine: Pre
and Post Catalytic
Converter Oxygen
Sensor Heaters,
Canister Purge
Solenoid
48 Fog Lamps
49 Right High Intensity Discharge
Headlamp
50 Left High Intensity Discharge
Headlamp
51 Horn
52 Cluster Run/Crank