Chevrolet 1998 C/K Full-Size Pickup Owner's Manual page 382

Short TripKity Maintenance Schedule
--
Gasoline Engines
15,000 Miles (25
000 km) (Continued)
0
Check readfront axle fluid level and add fluid as needed. Check constant
0
For Two-Wheel-Drive vehicles only: Clean and repack the front wheel
0
Vehicles With GVWR Above 8,500 lbs. Only: Inspect shields and underhood
velocity joints and axle seals for leaking. (See footnote
**.)
bearings (or
at each
brake relining, whichever occurs first).
insulation for damage or looseness. Adjust or replace as required.
This is a Noise Emission Control Service. Applicable only to vehicles
sold in the United States.
18,000 Miles (30 000 km)
0
Change engine oil and filter (or every 3 months, whichever occurs first).
Lubricate chassis components (or every 3 months, whichever occurs first).
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
An Emission Control Service.
(See footnote
#.)
velocity joints and axle seals for leaking. (See footnote
**.)
rotation pattern and additional information. (See footnote +.)
21,000 Miles (35 000 km)
0
Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
MILEAGE
7-12