engine BUICK LESABRE 2002 Owner's Manual

Long Trip/Highway Scheduled Maintenance
7-23
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A CHANGE ENGINE OIL SOON message
will come on. Change your oil as soon as possible
within the next two times you stop for fuel. It is possible
that, if you are driving under the best conditions, the oil
life system may not indicate that an oil change is
necessary for over a year. However, your engine oil and
filter must be changed at least once a year and at this
time the system must be reset. It is also important to
check your oil regularly and keep it at the proper level.If the system is ever reset accidentally, you must change
your oil at 3,000 miles (5 000 km) since your last oil
change. Remember to reset the oil life system whenever
the oil is changed. See ªOil Life Systemº in the Index
for information on resetting the system.
@ Whenever the tires are rotated, the Check Tire
Pressure System (if equipped) must be reset.
+ A good time to check your brakes is during tire
rotation. See ªBrake System Inspectionº under
ªPeriodic Maintenance Inspectionsº in Part C of
this schedule.

Long Trip/Highway Scheduled Maintenance
7-24
7,500 Miles (12 500 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
15,000 Miles (25 000 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

If Equipped: Replace passenger compartment air filter.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
22,500 Miles (37 500 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
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Long Trip/Highway Scheduled Maintenance
7-25
30,000 Miles (50 000 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

If Equipped: Replace passenger compartment air filter.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)

Replace engine air cleaner filter.
An Emission Control Service.
37,500 Miles (62 500 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
45,000 Miles (75 000 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

If Equipped: Replace passenger compartment air filter.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
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DATE
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Long Trip/Highway Scheduled Maintenance
7-26
50,000 Miles (83 000 km)

Change automatic transaxle fluid and filter 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.
If you do not use your vehicle under any of these conditions, change the fluid
and filter at 100,000 miles (166 000 km).
52,500 Miles (87 500 km)
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
ACTUAL
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DATE
ACTUAL
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DATE

Long Trip/Highway Scheduled Maintenance
7-27
60,000 Miles (100 000 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

If Equipped: Replace passenger compartment air filter.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)

Inspect engine accessory drive belt.
An Emission Control Service.

Replace engine air cleaner filter.
An Emission Control Service.
67,500 Miles (112 500 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
ACTUAL
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DATE
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DATE

Long Trip/Highway Scheduled Maintenance
7-28
75,000 Miles (125 000 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

If Equipped: Replace passenger compartment air filter.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
82,500 Miles (137 500 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
90,000 Miles (150 000 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

If Equipped: Replace passenger compartment air filter.

Replace engine air cleaner filter.
An Emission Control Service.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
ACTUAL
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DATE
ACTUAL
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DATE
ACTUAL
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DATE

Long Trip/Highway Scheduled Maintenance
7-29
97,500 Miles (162 500 km)

Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. (See footnote *.)

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper rotation
pattern and additional information. (See footnote @.) (See footnote +.)
100,000 Miles (166 000 km)

Inspect spark plug wires.
An Emission Control Service.

Replace spark plugs.
An Emission Control Service.

Change automatic transaxle fluid and filter 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.
If you haven't used your vehicle under severe service conditions listed
previously and, therefore, haven't changed your automatic transaxle fluid,
change both the fluid and filter.
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Long Trip/Highway Scheduled Maintenance
7-30
150,000 Miles (240 000 km)

Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service. ACTUAL
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7-31
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. See ªEngine Oilº in the Index for
further details.
Engine Coolant Level Check
Check the engine coolant level and add DEX
-COOL

coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the
Index for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
Don't forget to check your spare tire. See ªTiresº
in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.

7-33
Starter Switch Check
CAUTION:
When you are doing this check, the vehicle could
move suddenly. If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. See ªParking Brakeº in the Index if 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, your
vehicle needs service.Automatic Transaxle Shift Lock Control
System Check
CAUTION:
When you are doing this check, the vehicle could
move suddenly. If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough
room around the vehicle. It should be parked on
a level surface.
2. Firmly apply the parking brake. See ªParking Brakeº
in the Index if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but don't start the engine. Without applying
the regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), your vehicle needs service.