engine oil BUICK LACROSSE 2007 Owner's Guide

Maintenance Schedule
Introduction
Important: Keep engine oil at the proper level
and change as recommended.
Have you purchased the GM Protection Plan? The
Plan supplements your new vehicle warranties.
See your Warranty and Owner Assistance booklet
or your dealer for details.
Maintenance Requirements
Notice:Maintenance intervals, checks,
inspections, replacement parts, and
recommended uids and lubricants as
prescribed in this manual are necessary to keep
your vehicle in good working condition. Any
damage caused by failure to follow scheduled
maintenance may not be covered by warranty.
458

Scheduled Maintenance
When the change engine oil light or CHANGE OIL
SOON DIC message comes on, it means that
service is required for your vehicle. Have
your vehicle serviced as soon as possible within
the next 600 miles (1 000 km). It is possible that, if
you are driving under the best conditions, the
engine oil life system may not indicate that vehicle
service is necessary for over a year. However,
the engine oil and lter must be changed at least
once a year and at this time the system must
be reset. Your GM Goodwrench
®dealer has
GM-trained service technicians who will perform
this work using genuine GM parts and reset
the system.
If the engine oil life system is ever reset
accidentally, you must service your vehicle within
3,000 miles (5 000 km) since the last service.
Remember to reset the oil life system whenever
the oil is changed. SeeEngine Oil Life System on
page 356for information on the Engine Oil Life
System and resetting the system.When the light or message appears, certain
services, checks, and inspections are required.
Required services are described in the following
for “MaintenanceI” and “MaintenanceII.”
Generally, it is recommended that the rst service
be MaintenanceI, the second service be
MaintenanceII, and that you alternate
MaintenanceIand MaintenanceIIthereafter.
However, in some cases, MaintenanceIImay be
required more often.
MaintenanceI— Use MaintenanceIif the light
or message comes on within 10 months since
the vehicle was purchased or MaintenanceII
was performed.
MaintenanceII— Use MaintenanceIIif the
previous service performed was MaintenanceI.
Always use MaintenanceIIwhenever the light
or message comes on 10 months or more since
the last service or if the light or message has
not come on at all for one year.
462

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 353. Reset oil life system.
SeeEngine Oil Life System on page 356.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (k).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 358.See footnote (l).•
Rotate tires and check ination pressures and wear. SeeTire Inspection and
Rotation on page 416and “Tire Wear Inspection” inAt Least Once a Month
on page 467.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid
as needed.••
Perform any needed additional services. See “Additional Required Services”
in this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transaxle uid level and add uid as needed.•
Replace passenger compartment air lter.See footnote (g).•
Inspect throttle system.See footnote (j).•
463

(h)Change automatic transaxle uid and lter if
the vehicle is mainly driven under one or more of
these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C)
or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or
delivery service.
(i)Drain, ush, and rell cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 363 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.
(j)Check throttle system for interference or
binding and for damaged or missing parts. Replace
parts as needed. Replace any components that
have high effort or excessive wear. Do not
lubricate accelerator or cruise control cables.(k)A uid loss in any vehicle system could
indicate a problem. Have the system inspected
and repaired and the uid level checked. Add uid
if needed.
(l)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(m)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
Owner Checks and Services
These owner checks and services should be
performed at the intervals specied to help
ensure the safety, dependability, and emission
control performance of your vehicle. Your
GM Goodwrench
®dealer can assist you with
these checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 470.
466

At Each Fuel Fill
It is important to perform these underhood checks
at each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 353for
further details.
Notice:It is important to check your oil
regularly and keep it at the proper level. Failure
to keep your engine oil at the proper level
can cause damage to your engine not covered
by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. See
Engine Coolant on page 363for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in
the windshield washer uid reservoir and add the
proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make
sure they are inated to the correct pressures.
Do not forget to check the spare tire. See
Ination - Tire Pressure on page 409. Check to
make sure the spare tire is stored securely.
SeeChanging a Flat Tire on page 426.
Tire Wear Inspection
Tire rotation may be required for high mileage
highway drivers prior to the Engine Oil Life System
service notication. Check the tires for wear
and, if necessary, rotate the tires. SeeTire
Inspection and Rotation on page 416.
467

Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name,
part number, or specication may be obtained from
your dealer.
Usage Fluid/Lubricant
Engine OilEngine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certied for Gasoline Engines
starburst symbol. GM Goodwrench
®
oil meets all the requirements for
your vehicle. To determine the
proper viscosity for your vehicle’s
engine, seeEngine Oil on page 353.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 363.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Usage Fluid/Lubricant
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Automatic
TransaxleDEXRON
®-VI Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring
Anchor, and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. U.S. 12346293, in
Canada 992723) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and Door
HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 109435474).
Weatherstrip
ConditioningWeatherstrip Lubricant
(GM Part No. U.S. 3634770,
in Canada 10953518) or
Dielectric Silicone Grease
(GM Part No. U.S. 12345579, in
Canada 992887).
470

Normal Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your
GM dealer.
Normal Maintenance Replacement Parts
Part GM Part NumberACDelco®Part
Number
Engine Air Cleaner/Filter 15221217 A1614C
Engine Oil Filter
3.6L V6 89017342 PF61
3.8L V6 25010792 PF47
Passenger Compartment Air Filter 15284938 CF132
Spark Plugs
3.6L V6 Engine 12597464 41-990
3.8L V6 Engine 12568387 41-101
Windshield Wiper Blade Assembly – 22.0 inches (55.0 cm)
Driver’s Side 15146564 —
Passenger’s Side 15146565 —
471

Doing Your Own Service Work.................... 342
Door
Ajar Light................................................. 197
Automatic Door Lock................................. 98
Delayed Locking........................................ 97
Locks......................................................... 96
Power Door Locks..................................... 97
Programmable Automatic Door Unlock....... 98
Rear Door Security Locks.......................... 98
Driver
Position, Safety Belt................................... 22
Driver Information Center (DIC)................... 199
DIC Operation and Displays..................... 200
DIC Vehicle Personalization..................... 229
DIC Warnings and Messages................... 208
Driving
At Night................................................... 303
City.......................................................... 308
Defensive................................................. 286
Drunken................................................... 287
Freeway................................................... 309
Hill and Mountain Roads.......................... 312
In Rain and on Wet Roads...................... 305
Rocking Your Vehicle to Get it Out.......... 319
Winter...................................................... 314
Dual Automatic Climate Control System....... 172E
Electric Power Management........................ 163
Electrical System
Add-On Equipment................................... 449
Fuses and Circuit Breakers...................... 450
Headlamp Wiring..................................... 449
Instrument Panel Fuse Block................... 450
Power Windows and Other Power
Options................................................. 450
Underhood Fuse Block............................. 452
Windshield Wiper Fuses........................... 449
Engine
Air Cleaner/Filter...................................... 358
Battery..................................................... 384
Change Engine Oil Light.......................... 195
Check and Service Engine Soon Light..... 190
Coolant.................................................... 363
Coolant Heater......................................... 112
Coolant Temperature Gage...................... 189
Coolant Temperature Warning Light.......... 188
Drive Belt Routing.................................... 472
Engine Compartment Overview ................ 350
Exhaust................................................... 122
Oil ........................................................... 353
Oil Life System........................................ 356
501

I
Ignition Positions......................................... 109
Infants and Young Children, Restraints.......... 42
Ination - Tire Pressure............................... 409
Instrument Panel
Overview.................................................. 148
Instrument Panel (I/P)
Brightness................................................ 161
Cluster..................................................... 180
Interior Lamps............................................. 161
J
Jump Starting.............................................. 385
K
Keyless Entry System................................... 89
Keys............................................................. 87
L
Labeling, Tire Sidewall................................. 403
Lamps
Battery Run-Down Protection................... 164
Courtesy.................................................. 161
Electric Power Management..................... 163
Exterior.................................................... 158
Exterior Lighting Battery Saver................. 160
Fog .......................................................... 160
Interior..................................................... 161
Overhead Console Reading..................... 163
Rear Assist Handle Reading.................... 163
LATCH System
Child Restraints......................................... 51
License Plate Lamps................................... 400
Light
Airbag Readiness..................................... 182
Anti-Lock Brake System Warning............. 187
Brake System Warning............................. 186
Change Engine Oil................................... 195
Charging System..................................... 185
Check Gas Cap....................................... 199
Cruise Control.......................................... 195
504

Light (cont.)
Door Ajar................................................. 197
Engine Coolant Temperature Warning....... 188
Headlamps Suggested............................. 196
Highbeam On.......................................... 196
Low Coolant Warning............................... 189
Low Fuel Warning.................................... 198
Low Washer Fluid Warning...................... 197
Malfunction Indicator................................ 190
Oil Pressure............................................. 194
Passenger Airbag Status Indicator............ 183
Passenger Safety Belt Reminder.............. 182
Reduced Engine Power............................ 196
Safety Belt Reminder............................... 181
Security................................................... 195
Service Vehicle Soon............................... 197
TCS Warning Light.................................. 187
Tire Pressure........................................... 190
Traction Control System (TCS) Warning ... 187
Trunk Ajar................................................ 197
Lighting
Delayed Entry.......................................... 162
Delayed Exit............................................ 162
Entry........................................................ 161
Perimeter................................................. 163
Theater Dimming..................................... 162
Loading Your Vehicle................................... 319Lockout Protection......................................... 99
Locks
Automatic Door Lock................................. 98
Delayed Locking........................................ 97
Door.......................................................... 96
Lockout Protection..................................... 99
Power Door............................................... 97
Programmable Automatic Door Unlock....... 98
Rear Door Security Locks.......................... 98
Loss of Control........................................... 302
Low Coolant Warning Light.......................... 189
Low Fuel Warning Light............................... 198
Low Washer Fluid Warning Light................. 197
Lumbar
Power Controls.......................................... 10
M
Maintenance Schedule
Additional Required Services.................... 464
At Each Fuel Fill...................................... 467
At Least Once a Month............................ 467
At Least Once a Year .............................. 468
Introduction.............................................. 458
Maintenance Footnotes............................ 465
Maintenance Record................................ 473
Maintenance Requirements...................... 458
505