GMC 1998 Jimmy Owner's Manual page 366

Long TripBighway Maintenance Schedule
37,500 Miles (62 500 km)
0
Change engine oil and filter (or every I2 months, whichever occurs first).
0
Lubricate chassis components (or every 12 months, whichever occurs first).
0
Check readfront axle fluid level and add fluid as needed. Check constant
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
A H Emission Control S e n k x .
(See footnote #.)
velocity joints and axle seals for leaking. (See footnote **.)
rotation pattern and additional information. (See footnote
+.)
45,000 Miles (75 000 km)
0
0
0
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #. j
Check redfront axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking. (See footnote
*'$.)
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 90°F
-
In hilly or mountainous terrain.
(32°C) or higher.
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