1995 GMC Yukon Owner's Manual - Page 395

Maintenance Schedule I Light Duty Emissions (Continued) - Gasoline Engines With 0 Inspect spark plug wires . An Emission Control Service. ? 0 Replace air cleaner filter. Replace filter moreoften under dusty conditions. A n E m i s s i o n Control Service. 0 Inspect fuel tank, cap and lines for damage orleaks . Inspect fuel cap gasket for any damage. Replace parts as needed. An Emission Control Service. -i- I DATE I ACTUALMILEAGE I SERVICED BY: I I Maintenance Schedule II - Gasoline Engines With Light Duty Emissions The services shown in this schedule up to 60,000 miles ( 100 000 km) should be performed after 60,000 miles ( 100 000 km) at the same intervals. Footnotes -1The California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of vehicle useful life. We, however. urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. .!, .,. 's.*z- Drive axle service: Locking Differential - Drain fluid and refill at first engine oil change. At subsequent oil changes, check fluid level and add fluid as needed. If driving i n dusty areas o r towing a trailer. drain fluid and refill every 15,000 miles ( 2 5 000 km). Standard Differential - Check fluid lcvel and add fluid as needed at every engine o i l change. If driving i n dusty areas or towing a trailer. drain fluid and refill every 15,000 miles (25 000 km). 0 More frequent lubrication may be required for heavy-duty or off-road use. 7-27