check engine BUICK PARK AVENUE 2003 Service Manual

30,000 Miles (50 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qReplace passenger compartment air ®lter.
qReplace engine air cleaner ®lter. See
Engine Air
Cleaner/Filter on page 5-20for more information.An Emission Control Service.
qFor supercharged engine only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
33,000 Miles (55 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
36,000 Miles (60 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
39,000 Miles (65 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
42,000 Miles (70 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-9

57,000 Miles (95 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
60,000 Miles (100 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qReplace passenger compartment air ®lter.
qReplace engine air cleaner ®lter. See
Engine Air
Cleaner/Filter on page 5-20for more information.An Emission Control Service.
qFor supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
63,000 Miles (105 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
66,000 Miles (110 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
69,000 Miles (115 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
72,000 Miles (120 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-11

75,000 Miles (125 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qInspect engine air cleaner ®lter. If necessary, replace
the ®lter. If vehicle is driven in dusty/dirty conditions,
inspect ®lter at every engine oil change. See
Engine Air Cleaner/Filter on page 5-20for more
information.An Emission Control Service. (See
footnote ².)
qReplace passenger compartment air ®lter.
78,000 Miles (130 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
81,000 Miles (135 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
84,000 Miles (140 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
87,000 Miles (145 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
90,000 Miles (150 000 km)
qChange engine oil and ®lter (or every 3 months,
whichever occurs ®rst).An Emission Control Service.
(See footnote *.)
qReplace passenger compartment air ®lter.
qReplace engine air cleaner ®lter. See
Engine Air
Cleaner/Filter on page 5-20for more information.An Emission Control Service.
qFor supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-12

Long Trip/Highway Scheduled
Maintenance
The services shown in this schedule up to 100,000 miles
(166 000 km) should be repeated after 100,000 miles
(166 000 km) at the same intervals for the life of
this vehicle. The services shown at 150,000 miles
(240 000 km) should be repeated at the same interval
after 150,000 miles (240 000 km) for the life of this
vehicle.
See
Part B: Owner Checks and Services on page 6-19andPart C: Periodic MaintenanceInspections on
page 6-23.
Footnotes
²The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle's useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
*If your vehicle has the GM Oil Life System, a computer
system lets you know when to change the engine oil
and ®lter. This is based on engine revolutions and
engine temperature, and not on mileage. Basedon driving conditions, the mileage at which an oil
change will be indicated can vary considerably. For the
oil life system to work properly, you must reset the
system every time the oil is changed.
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
®lter 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 Engine Oil on
page 5-14
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 Brake System Inspection on page 6-24.
6-14

7,500 Miles (12 500 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
15,000 Miles (25 000 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qInspect engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.An
Emission Control Service. (See footnote ².)
qReplace passenger compartment air ®lter.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
22,500 Miles (37 500 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
30,000 Miles (50 000 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qReplace passenger compartment air ®lter.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
qReplace engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.An Emission Control Service.
qFor supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote ².)
37,500 Miles (62 500 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-15

45,000 Miles (75 000 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qInspect engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.An
Emission Control Service. (See footnote ².)
qReplace passenger compartment air ®lter.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
50,000 Miles (83 000 km)
qChange automatic transaxle ¯uid and ®lter if the
vehicle is mainly driven under one or more of
these conditions:
þ In heavy city traffic where the outside
temperature regularly reaches 90ÉF (32ÉC) or
higher.
þ In hilly or mountainous terrain.
þ When doing frequent trailer towing.
þ 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)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
60,000 Miles (100 000 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qReplace passenger compartment air ®lter.
qFor supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
qReplace 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)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
75,000 Miles (125 000 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qInspect engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-20for more information.An
Emission Control Service. (See footnote ².)
qReplace passenger compartment air ®lter.
qRotate tires. See
Tire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
82,500 Miles (137 500 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
90,000 Miles (150 000 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qReplace passenger compartment air ®lter.
qReplace engine air cleaner ®lter. See
Engine Air
Cleaner/Filter on page 5-20for more information.An Emission Control Service.
qFor supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs ®rst). See
Part D: Recommended
Fluids and Lubricants on page 6-25.An Emission
Control Service. (See footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
97,500 Miles (162 500 km)
qChange engine oil and ®lter (or every 12 months,
whichever occurs ®rst).An Emission Control
Service. (See footnote *.)
qRotate tires. SeeTire Inspection and Rotation on
page 5-62for proper rotation pattern and additional
information.(See footnote .) (See footnote +.)
6-17

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals speci®ed 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-COOLž
coolant mixture if necessary. SeeEngine Coolant
on page 5-24for 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.
See
Windshield Washer Fluid on page 5-38for further
details.
At Least Once a Month
Tire In¯ation Check
Visually inspect your tires and make sure tires are
in¯ated to the correct pressures. Don't forget to check
your spare tire. See
Tires on page 5-59for 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 3-51for further details.
6-19

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
Parking 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, 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
Parking Brake
on page 2-27if 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