2005 BUICK LACROSSE oil

(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 5-21 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.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 6-12.
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 5-15for 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.
6-8

Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-21for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank 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. SeeTires on page 5-52for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-68.
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 5-60.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-27if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench
®dealer for service.
6-9

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 5-15.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 5-21.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
Washer SolventGM Optikleen
®Washer Solvent.
Usage Fluid/Lubricant
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Automatic
TransaxleDEXRON
®-III Automatic
Transmission Fluid. Look for
“Approved for the H-Specication”
on the label.
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
ConditioningDielectric Silicone Grease
(GM Part No. U.S. 12345579, in
Canada 992887).
6-12

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 24508572 A1614C
Engine Oil Filter
3.6L V6
3.8L V812587552
25010792PF61
PF47
Passenger Compartment Air Filter 10340216 —
Spark Plugs
3.6L V6 Engine
3.8L V8 Engine12565996
1256838741-988
41-101
Windshield Wiper Assembly
22.0 inches (56.0 cm) 10350320—
6-13

Electrical System (cont.)
Power Windows and Other Power Options......5-88
Underhood Fuse Block.................................5-90
Windshield Wiper Fuses...............................5-87
Engine
Air Cleaner/Filter.........................................5-19
Battery.......................................................5-38
Change Engine Oil Light...............................3-43
Check and Service Engine Soon Light............3-39
Coolant......................................................5-21
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-38
Coolant Temperature Warning Light................3-38
Engine Compartment Overview......................5-12
Exhaust.....................................................2-30
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheated Protection Operating Mode...........5-26
Overheating................................................5-24
Reduced Power Light...................................3-44
Starting......................................................2-22
Entry Lighting.................................................3-16
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-30
Exterior Lamps...............................................3-13
Exterior Lighting Battery Saver..........................3-15F
Filter
Engine Air Cleaner......................................5-19
Finish Damage...............................................5-84
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-67
Flat Tire, Changing.........................................5-68
Flat Tire, Storing.............................................5-76
Fluid
Automatic Transmission................................5-21
Power Steering...........................................5-33
Windshield Washer......................................5-34
Fog Lamps............................................3-15, 5-48
Folding Rear Seat............................................ 1-8
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Check Gas Cap Light...................................3-46
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-46
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-6
Low Warning Light.......................................3-46
5

I
Ignition Positions.............................................2-21
Infants and Young Children, Restraints...............1-33
Ination -- Tire Pressure..................................5-58
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-31
Overview..................................................... 3-4
Interior Lamps................................................3-16
J
Jump Starting.................................................5-39
K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Labelling, Tire Sidewall....................................5-53
Lamps
Battery Run-Down Protection.........................3-18
Courtesy....................................................3-16
Exterior......................................................3-13Lamps (cont.)
Exterior Lighting Battery Saver......................3-15
Fog ...................................................3-15, 5-48
Interior.......................................................3-16
Overhead Console Reading..........................3-18
Rear Assist Handle Reading..........................3-18
LATCH System
Child Restraints...........................................1-43
Securing a Child Restraint Designed for the
LATCH System........................................1-45
Light
Airbag Readiness........................................3-33
Anti-Lock Brake System Warning...................3-37
Brake System Warning.................................3-36
Change Engine Oil......................................3-43
Charging System.........................................3-35
Check Gas Cap..........................................3-46
Cruise Control.............................................3-43
Door Ajar...................................................3-45
Engine Coolant Temperature Warning.............3-38
Headlamps Suggested.................................3-44
Highbeam On.............................................3-44
Low Coolant Warning...................................3-39
Low Fuel Warning.......................................3-46
Low Washer Fluid Warning...........................3-45
Malfunction Indicator....................................3-39
Oil Pressure...............................................3-42
Passenger Airbag Status Indicator..................3-34
7

Mirrors (cont.)
Outside Power Heated Mirrors.......................2-34
Outside Power Mirrors..................................2-33
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-21
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-32
Off-Road Recovery..........................................4-12
Oil
Change Engine Oil Light...............................3-43
Engine.......................................................5-15
Pressure Light.............................................3-42
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-31
Online Owner Center........................................ 7-3
OnStar
®System.............................................2-34
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-28
Outside
Convex Mirror.............................................2-34
Power Heated Mirrors..................................2-34
Power Mirrors.............................................2-33Overhead Console Reading Lamps....................3-18
Overheated Engine Protection
Operating Mode..........................................5-26
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Park Aid........................................................3-18
Park (P)
Shifting Into................................................2-28
Shifting Out of............................................2-29
Parking
Assist........................................................3-18
Brake........................................................2-27
Over Things That Burn.................................2-30
Passenger Airbag Status Indicator.....................3-34
Passenger Compartment Air Filter.....................3-28
Passenger Sensing System..............................1-60
Passing.........................................................4-12
PASS-Key
®III ................................................2-19
PASS-Key®III Operation..................................2-19
Perimeter Lighting...........................................3-18
Power
Accessory Outlets........................................3-20
Door Locks.................................................2-11
Electrical System.........................................5-88
9