Page 377 of 512
Black plate (39,1)Buick LaCrosse Owner Manual - 2012
Vehicle Care 10-39
Engine Compartment Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. J-CaseFuses Usage
6 Wiper
12 Starter J-Case
Fuses Usage
21 Rear Power
Windows
22 Sunroof
24 Front Power
Windows J-Case
Fuses Usage
25 Passive Entry/
Passive Start
Module
—Battery 2
(eAssist)
26 Antilock Brake
System Pump
27 Electric Park Brake
28 Rear Window
Defogger
41 Brake
Vacuum Pump
42 Cooling Fan K2
43 Not Used
44 Transmission
Auxiliary Oil Pump
(eAssist)
45 Cooling Fan K1
59 AIR Pump 
     
        
        Page 450 of 512

Black plate (4,1)Buick LaCrosse Owner Manual - 2012
11-4 Service and Maintenance
.Check tire inflation pressures.
SeeTire Pressure on
page 10‑54.
.Inspect tire wear. See Tire
Inspection on page 10‑60.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10‑13.
.Inspect brake system.
.Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of
wear. See Exterior Care on
page 10‑102.
.Check restraint system
components. See Safety System
Check on page 3‑20.
.Visually inspect fuel system for
damage or leaks.
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.Lubricate body components. See
Exterior Care on page 10‑102.
.Check starter switch. See Starter
Switch Check on page 10‑27.
.Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check on
page 10‑27.
.Check ignition transmission lock.
See Ignition Transmission Lock
Check on page 10‑28.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10‑28.
.Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.Check tire sealant expiration
date, if equipped. See Tire
Sealant and Compressor Kit
(With Pressure Relief Button) on
page 10‑71 orTire Sealant and
Compressor Kit (With Pressure
Deflation Button) on page 10‑78.
.Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2‑22. 
     
        
        Page 509 of 512

Black plate (11,1)Buick LaCrosse Owner Manual - 2012
INDEX i-11
RoadsDriving, Wet . . . . . . . . . . . . . . . . . . . 9-7
Roadside Assistance Program . . . . . . . . . . . . . . . 13-7, 13-10
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . 2-22
Rotation, Tires . . . . . . . . . . . . . . . . 10-61
Routing, Engine Drive Belt . . . . . 12-4
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . 9-30
S
Safety Belts . . . . . . . . . . . . . . . . . . . 3-13Care . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Extender . . . . . . . . . . . . . . . . . . . . . . 3-20
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . 3-14
Lap-Shoulder Belt . . . . . . . . . . . . 3-15
Reminders . . . . . . . . . . . . . . . . . . . . 5-15
Replacing after a Crash . . . . . . 3-21
Use During Pregnancy . . . . . . . . 3-20 Safety Defects Reporting
Canadian Government . . . . . . 13-19
General Motors . . . . . . . . . . . . . 13-20
U.S. Government . . . . . . . . . . . 13-19
Safety Locks . . . . . . . . . . . . . . . . . . . 2-12
Safety System Check . . . . . . . . . . 3-20
Satellite Radio . . . . . . . . . . . . . . . . . 7-24
Scheduling Appointments . . . . . 13-13
Sealant Kit, Tire . . . . . . .10-71, 10-78
Seats Adjustment, Front . . . . . . . . . . . . . . 3-4
Head Restraints . . . . . . . . . . . . . . . 3-2
Heated and Ventilated
Front . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Lumbar Adjustment, Front . . . . . 3-5
Memory . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Power Adjustment, Front . . . . . . 3-5
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Reclining Seatbacks . . . . . . . . . . . 3-6
Securing Child Restraints . . . . . . . . . . . . . . 3-52, 3-55 Security
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 2-14
Selective Ride Control . . . . . . . . . 9-41
Service Accessories and
Modifications . . . . . . . . . . . . . . . . 10-3
Doing Your Own Work . . . . . . . . 10-4
Engine Soon Light . . . . . . . . . . . . 5-17
Maintenance Records . . . . . . .11-15
Maintenance, General Information . . . . . . . . . . . . . . . . . . 11-1
Parts Identification Label . . . . . 12-1
Publications Ordering Information . . . . . . . . . . . . . . . . 13-18
Scheduling Appointments . . . 13-13
Servicing the Airbag . . . . . . . . . . . 3-33
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . 10-27 
     
        
        Page 510 of 512

Black plate (12,1)Buick LaCrosse Owner Manual - 2012
i-12 INDEX
ShiftingInto Park . . . . . . . . . . . . . . . . . . . . . . 9-27
Out of Park . . . . . . . . . . . . . . . . . . . 9-29
Side Blind Zone Alert . . . . . . . . . . 9-46
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 6-4
Spare Tire
Compact . . . . . . . . . . . . . . . . . . . . 10-93
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 12-2
Speedometer . . . . . . . . . . . . . . . . . . 5-12
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . 5-22
System . . . . . . . . . . . . . . . . . . . . . . . 9-40
Start Assist, Hills . . . . . . . . . . . . . . 9-38
Start Vehicle, Remote . . . . . . . . . . 2-9
Starter Switch Check . . . . . . . . . 10-27
Starting the Engine . . . . . . . . . . . . 9-22
Starting the Vehicle Messsages . . . . . . . . . . . . . . . . . . . 5-41
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-4 Steering (cont'd)
Fluid, Power . . . . . . . . . . . . . . . . 10-21
Heated Wheel . . . . . . . . . . . . . . . . . 5-3
Wheel Adjustment . . . . . . . . . . . . . 5-2
Wheel Controls . . . . . . . . . . . . . . . . 5-2
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . 10-35
Storage Mass Media (MEM) . . . . . . . . . . . 7-36
Storage Areas Center Console . . . . . . . . . . . . . . . . 4-2
Convenience Net . . . . . . . . . . . . . . 4-2
Front . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Glove Box . . . . . . . . . . . . . . . . . . . . . 4-1
Storing the Tire Sealant and Compressor Kit . . . . . . . . . 10-87
Stuck Vehicle . . . . . . . . . . . . . . . . . . 9-11
Sun Visor Lamps . . . . . . . . . . . . . . . 6-6
Sun Visors . . . . . . . . . . . . . . . . . . . . . 2-21
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . iv
System Infotainment . . . . . . . . . . . . . . . . . . . 7-1T
Tachometer . . . . . . . . . . . . . . . . . . . . 5-12
Taillamps
Bulb Replacement . . . . . . . . . . 10-35
Text Telephone (TTY) Users . . . 13-6
Theft-Deterrent Systems . . . . . . . . . . . . . . . 2-15, 2-16
Immobilizer . . . . . . . . . . . . . . . . . . . 2-15
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Tires Buying New Tires . . . . . . . . . . . 10-63
Chains . . . . . . . . . . . . . . . . . . . . . . 10-68
Changing . . . . . . . . . . . . . . . . . . . 10-87
Compact Spare . . . . . . . . . . . . . 10-93
Designations . . . . . . . . . . . . . . . 10-51
Different Size . . . . . . . . . . . . . . . 10-65
If a Tire Goes Flat . . . . . . . . . . 10-69
Inflation Monitor System . . . . 10-57
Inspection . . . . . . . . . . . . . . . . . . 10-60
Messages . . . . . . . . . . . . . . . . . . . . 5-41
Pressure Light . . . . . . . . . . . . . . . . 5-24
Pressure Monitor System . . . 10-56