1999 Chevrolet Blazer Owner's Manual - Page 393
1999 Chevrolet Blazer Manual
Page 393 highlights
yellowblue Long Trip/Highway Scheduled Maintenance 100,000 Miles (166 000 km) j Inspect spark plug wires. An Emission Control Service. j Replace spark plugs. An Emission Control Service. j If you haven't used your vehicle under severe service conditions listed j DATE ACTUAL MILEAGE SERVICED BY: previously and, therefore, haven't changed your automatic transmission fluid, change both the fluid and filter. Manual transmission fluid doesn't require change. Inspect Positive Crankcase Ventilation (PCV) valve. An Emission Control Service. DATE ACTUAL MILEAGE 150,000 Miles (240 000 km) j Drain, flush and refill cooling system (or every 60 months since last service, whichever occurs first). See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. SERVICED BY: 7-39