2004 BUICK PARK AVENUE Owner's Manual

7,500 Miles (12 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
15,000 Miles (25 000 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Inspect engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.
An Emission Control Service. (See footnote †.)
❑Replace passenger compartment air lter.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
22,500 Miles (37 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
30,000 Miles (50 000 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Replace passenger compartment air lter.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
❑Replace engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.
An Emission Control Service.
❑For supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs rst). SeePart D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote †.)
37,500 Miles (62 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-15

45,000 Miles (75 000 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Inspect engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.
An Emission Control Service. (See footnote †.)
❑Replace passenger compartment air lter.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
50,000 Miles (83 000 km)
❑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.
If you do not use your vehicle under any of these
conditions, change the uid and lter at 100,000 miles
(166 000 km).
52,500 Miles (87 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
60,000 Miles (100 000 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Replace passenger compartment air lter.
❑For supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs rst). SeePart D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote †.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
❑Replace engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.
An Emission Control Service.
6-16

67,500 Miles (112 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
75,000 Miles (125 000 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Inspect engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.
An Emission Control Service. (See footnote †.)
❑Replace passenger compartment air lter.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
82,500 Miles (137 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
90,000 Miles (150 000 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Replace passenger compartment air lter.
❑Replace engine air cleaner lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.
An Emission Control Service.
❑For supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs rst). SeePart D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote †.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
97,500 Miles (162 500 km)
❑Change engine oil and lter (or every 12 months,
whichever occurs rst).An Emission Control
Service. (See footnote *.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-72for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-17

100,000 Miles (166 000 km)
❑Inspect spark plug wires.An Emission Control
Service.
❑Replace spark plugs.An Emission Control Service.
❑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.
❑If you haven’t used your vehicle under severe service
conditions listed previously and, therefore, haven’t
changed your automatic transaxle uid, change both
the uid and lter.
150,000 Miles (240 000 km)
❑Drain, ush and rell cooling system (or every
60 months since last service, whichever occurs rst).
SeeEngine Coolant on page 5-25for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.An Emission Control Service.
❑Inspect engine accessory drive belt.An Emission
Control Service.
6-18

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals specied to
help ensure the safety, dependability and emission
control performance of your vehicle.
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
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 ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-14for further
details.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 5-25for 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.
SeeWindshield Washer Fluid on page 5-39for
further details.
At Least Once a Month
Tire Ination Check
Visually inspect your tires and make sure tires are inated
to the correct pressures. Don’t forget to check your spare
tire. SeeTires on page 5-62for further details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-57for further details.
6-19

At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all your belts,
buckles, latch plates, retractors and anchorages are
working properly. Look for any other loose or damaged
safety belt system parts. If you see anything that might
keep a safety belt system from doing its job, have it
repaired. Have any torn or frayed safety belts replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag
system does not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or that
streak or miss areas of the windshield. Also see
“Windshield Wiper and Wiper Blades” underCleaning
the Outside of Your Vehicle on page 5-93.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them
last longer, seal better, and not stick or squeak.
Apply silicone grease with a clean cloth. During very
cold, damp weather more frequent application may be
required. SeePart D: Recommended Fluids and
Lubricants on page 6-25.
Automatic Transaxle Check
Check the transaxle uid level; add if needed. See
Automatic Transaxle Fluid on page 5-23. A uid loss
may indicate a problem. Check the system and repair
if needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specied in Part D.
Body Lubrication Service
Lubricate all body door hinges. Also lubricate all hinges
and latches, including those for the hood, glove box
door and console door. Part D tells you what to
use. More frequent lubrication may be required when
exposed to a corrosive environment.
6-20

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 2-29if
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 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. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-29if 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.
6-21

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the
shift lever is in PARK (P).
The key should come out only in LOCK.
Parking Brake and Automatic Transaxle
Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged.
Make sure there is room in front of your
vehicle in case it begins to roll. Be ready to
apply the regular brake at once should the
vehicle begin to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake,
set the parking brake.
To check the parking brake’s holding ability:
With the engine running and transaxle in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-22