1999 Chevrolet Express Van Owner's Manual - Page 341

yellowblue Long Trip/Highway Scheduled Maintenance -- Gasoline Engines j Replace fuel filter. j j j j j An Emission Control Service. (See footnote[.) Replace air cleaner filter. An Emission Control Service. Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket for any damage. Replace parts as needed. An Emission Control Service. (See footnote[.) Vehicles With GVWR Above 10,000 lbs. Only: Inspect shields for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States. Inspect Exhaust Gas Recirculation (EGR) system as described in the service manual. An Emission Control Service. (See footnote[.) Inspect Evaporative Control System. Check all fuel and vapor lines and hoses for proper hook-up, routing and condition. Check that the purge valve works properly, if equipped. Replace as needed. An Emission Control Service. (See footnote[.) DATE ACTUAL MILEAGE 67,500 Miles (112 500 km) An Emission Control Service. j Change engine oil and filter (or every 12 months, whichever occurs first). (Continued) SERVICED BY: 7-33