Buick 2003 LeSabre Owner's Manual page 363

100,000 Miles (1 66 000 km)
0
Inspect spark plug wires. An Emission Control
0
Replace spark plugs. An Emission Control Service.
U
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
Service.
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.
Q 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.
150,000 Miles
(240
000 km)
0
Drain, flush and refill cooling system (or every
60 months since last service, whichever occurs first).
See Engine Coolant on page 5-24 for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test cooling system and
pressure cap. An Emission Control Service.
Control Service.
B Inspect engine accessory drive belt. An Emission
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
(1 66 000 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
6-11
and Part C: Periodic Maintenance Inspections on
page 6-2 1.
Footnotes
t
The 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.
6-1 2