2004 Chevrolet Blazer Owner's Manual - Page 401

96,000 Miles (160 000 km) ❑ Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. ❑ Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) ❑ Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) ❑ Rotate tires. See Tire Inspection and Rotation on page 5-70 for proper rotation pattern and additional information. (See footnote +.) 100,000 Miles (166 000 km) ❑ Inspect spark plug wires. An Emission Control Service. ❑ Replace spark plugs. An Emission Control Service. ❑ If you have not used your vehicle under severe service conditions listed previously and, therefore, have not changed your automatic transmission fluid, change both the fluid and filter. Manual transmission fluid does not require change. ❑ Automatic Transfer Case Only: Change transfer case fluid. ❑ Inspect Positive Crankcase Ventilation (PCV) valve. An Emission Control Service. 99,000 Miles (165 000 km) ❑ Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. ❑ Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) ❑ Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) 150,000 Miles (240 000 km) ❑ Drain, flush and refill cooling system (or every 60 months since last service, whichever occurs first). See Engine Coolant on page 5-24 for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test cooling system and pressure cap. An Emission Control Service. ❑ Inspect engine accessory drive belt. An Emission Control Service. 6-17