Chevrolet 1998 C/K Full-Size Pickup Owner's Manual page 407

Long Tripmighway Maintenance Schedule
--
Gasoline Engines
0
Vehicles With GVWR Above 8,500 Ibs. Only: Inspect shields and underhood
insulation for damage or looseness. Adjust or replace as required.
This is a Noise Emission Control Service. Applicable only to velzicles
sold in the United States.
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
97,500 Miles (162 500 km)
0
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
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
(See footnote
#.)
velocity joints and axle seals for leaking. (See footnote
**.)
rotation pattern and additional information. (See footnote
+.)
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DATE
I
MILEAGE
7-37