1994 Chevrolet Blazer Owner's Manual - Page 315

13. TIRE AND WHEEL ROTATION AND INSPECTION For proper wear and maximum tire life, rotate tires at the first 6,000 miles (10 000 kilometers) for Schedule I or 7,500 miles (12 500 kilometers) for Schedule I1 and then every 15,000 miles (25 000 kilometers) thereafter. Follow the instructions and patterns shown in Section 6. Check tires for uneven wear or damage. If irregular or premature wear is apparent, check wheel alignment. Also, check for damaged wheels. See "Tires" in the Index for more information. 14. DRIVE AXLE SERVICE Check readfront axle fluid level and add as needed. Check constant velocity joints and axle seals forleaking. Locking Differential - Drain fluid at first oil change and refill. Check fluid level and add as needed at subsequent oil changes. In dusty areas or trailer towing applications, drain fluid at every 15,000 miles (24 135 kilometers) and refill.? Standard Differential - Check fluid level and add as needed at every oil change. In dusty areas or trailer towing applications, drain fluid every 15,000 miles (24 135 kilometers) and refill.? More frequent lubrication may be required for off-road use. 15. BRAKE SYSTEM INSPECTION When the engine oil is changed, inspect the lines and hoses for proper hookup, binding, leaks, cracks, chafing, etc. Check the parking brake adjustment, and the fluid level in the master cylinder. A low fluid level can indicate worn disc brake pads which may need to be serviced.? When the wheels are removed for rotation, inspect disc brake pads for wear and rotors for surface condition. Also inspect drum brake linings for wear and cracks. Inspect other brake parts, including drums, wheel cylinders, parking brake, etc. at the same time. Inspect brakes more often if driving habits or conditions result frequent braking. fluid loss in these systems may indicate a problem. Have them inspected and repaired at once. tA . L 7-9