1999 Chevrolet Express Van Owner's Manual - Page 324

yellowblue Short Trip/City Scheduled Maintenance -- Gasoline Engines 50,000 Miles (83 000 km) j Change automatic transmission fluid and filter if the vehicle's GVWR is over 8600 lbs. or if the vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90_F (32_C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. If you do not use your vehicle under any of these conditions, change the fluid and filter at 100,000 miles (166 000 km). DATE ACTUAL MILEAGE SERVICED BY: 51,000 Miles (85 000 km) j Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. j Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) j Check axle fluid level and add fluid as needed. (See footnote **.) DATE ACTUAL MILEAGE SERVICED BY: 54,000 Miles (90 000 km) j Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. DATE ACTUAL MILEAGE SERVICED BY: 7-16