Chevrolet 1998 Tracker Owner's Manual page 317

Short Trip/City Maintenance Schedule
30,000 Miles
(50
000 km) (Continued)
0
CI
0
0
Change automatic transmission 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
- In hilly or mountainous terrain.
-
When doing frequent trailer towing.
-
Uses such as found in taxi, police or delivery service.
I f you do not use your vehicle under any of these conditions, change the fluid
and filter every 100,000 miles (166 000 km).
Rotate tires. See "Tire Inspection and Rotation" in
the
Index for proper
rotation pattern and additional information. (See footnote +.)
Change manual transmission fluid.
Change transfer case fluid.
Change differential fluid.
Inspect the valve lash and adjust if necessary.
An Emission Control Service.
Replace fuel filter (or every 30 months, whichever occurs first, or sooner
if
filter is clogged).
An Emission Control Service. (See footnote
"f
)
Check engine idle speed and adjust it to underhood label specifications.
An Emission Control Service. (See footnote?.)
90°F (32°C) or higher.
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