GMC 2002 Savana Van Owner's Manual page 368

Short Trip/City Scheduled Maintenance
90,000 Miles (150 000 km)
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Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
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Lubricate chassis components (or every 3 months, whichever occurs first).
(See footnote #.)
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Check axle fluid level and add fluid as needed. 2500 and 3500 Series Only:
If driving in dusty areas or when towing a trailer, drain fluid and refill every
15,000 miles (25 000 km).
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Clean and repack the front wheel bearings (or at each brake relining,
whichever occurs first).
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Replace fuel filter.
An Emission Control Service. (See footnote
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Diesel Engine Only: Replace engine air cleaner filter.
An Emission Control Service.
Gasoline Engine Only: See "Engine Air Cleaner Filter Restriction Indicator
Check" in the Index.
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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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(Continued)
DATE
ACTUAL
SERVICED BY:
MILEAGE
7-29