Chevrolet 1995 Astro Cargo Owner's Manual page 318

Part E: Maintenance Record
After the scheduled services are performed, record the date, odometer
reading and who performed the service in the boxes provided after the
maintenance interval. Any additional information from "Owner Checks and
Services" or "Periodic Maintenance" can be added on the following record
pages. Also, you should retain all maintenance receipts. Your owner
information portfolio is a convenient place to store them.
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