Chevrolet 2000 Express Van Owner's Manual page 359

Long Trip/Highway Scheduled Maintenance
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Diesel Engine Only: Check the air intake system installation to assure that
gaskets are properly sealed and that all hose connections, fasteners and other
components are tight. Also check to be sure that the air cleaner housing is
properly seated and the cover fits tightly. Tighten connections and fasteners or
replace damaged parts as necessary. This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
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Diesel Engine Only: If your engine has a thermostatically controlled cooling fan,
inspect hoses and ducts for proper hook
first). Be sure the valve works properly. This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
22,500 Miles (37 500 km)
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Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
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Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #.)
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Check axle fluid level and add fluid as needed. (See footnote **.)
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Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
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up (or every 12 months, whichever occurs
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DATE
ACTUAL
SERVICED BY:
MILEAGE
7-35