Chevrolet S10 Pickup 2003 Owner's Manual page 393

Replace fuel filter. An Emission Control Service.
(See footnote †.)
Replace engine air cleaner filter. See Engine Air
Cleaner/Filter on page 5-19 for more information.
An Emission Control Service.
Rotate tires. See Tire Inspection and Rotation on
page 5-64 for proper rotation pattern and additional
information. (See footnote +.)
97,500 Miles (162 500 km)
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 #.)
Check rear/front axle fluid level and add fluid as
needed. Check constant velocity joints and axle seals
for leaking. (See footnote **.)
Rotate tires. See Tire Inspection and Rotation on
page 5-64 for proper rotation pattern and additional
information. (See footnote +.)
100,000 Miles (166 000 km)
Inspect spark plug wires. An Emission Control
Service.
Replace spark plugs. An Emission Control Service.
If you haven't used your vehicle under severe service
conditions listed previously and, therefore, haven't
changed your automatic transmission fluid, change
both the fluid and filter. Manual transmission
fluid doesn't require change.
4.3L V6 Engine Only: Inspect Positive Crankcase
Ventilation (PCV) valve. An Emission Control
Service.
150,000 Miles (240 000 km)
Drain, flush and refill cooling system (or every
60 months since last service, whichever occurs first).
See Engine Coolant on page 5-27 for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap. An Emission Control Service.
Inspect engine accessory drive belt. An Emission
Control Service.
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