driven under one or more of these
c.onditions:
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.
(With some models, you shouldn’t
ever tow
a
trailer. See
Towing a
Trailer
in
the
Index.)
Uses such as.found in taxi, police
car or delivery service.
If-you do not use your vehicle under
any
of these conditions, change both
the fluid and filter every
100,000
miles
(166
000
km)
.
Replace spark plugs with the proper
type. See
Replacement-Parts
in the
Index.
9.
Spark
Plug
Wire Inspection*T
-
Inspect for burns, .cracks or other
damage. Check the boot fit at the
coils and at the spark plugs. Replace
wires as needed.
8.
Spark PIug~Replacement*
-
-10.
Exhaust Gas Recirculation (EGR)
System Inspection
(3.4L
Code
X
engine
only)*?
-
Conduct the
EGR system service-as described in
the service manual.
To
purchase
a
service manual, see
Service
Publications
in the
Index.
1
1.
Air
Cleaner Filter Replacementgc
-
Replace every
30,000
miles
(50
000
lun)
or more often under
dusty conditions. Ask your dealer
for the proper replacement intervals
for your driving conditions.
12.
Fuel Tank, Cap and Lines
Inspectiong‘t
-
Inspect fuel tank,
cap and lines (including fuel rails
and injection assembly). for damage
or leaks. Inspect fuel cap gasket for
an
even filler neck imprint or
any
damage. Replace parts as needed.
Periodic replacement of the fuel
filter is not required.
NOTE:
To
determine
your
engine’s
displacement and code, see
Engine
Identification
in the
Index.
*
=
An
Emission
Control
Service.
f
=
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
vehicle
useful
life. General Motors,
however, urges that all recommended
maintenance services be performed at the
indicated intervals and the maintenance
be recorded in “Section
E:
Maintenance
Record.”
243
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