1995 GMC Yukon Owner's Manual - Page 438

Maintenance Schedule I - Diesel Engines 0 Check the air intake system installation to assure that gaskets are properly sealed and that all hose connections, Fasteners and other re components are tight. Also check to be s ~ ~that the air cleaner housing is properly seated, the cover fits tightly and the wing nuts are tight. Tighten connections and fasteners or replace damaged parts as necessary. This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States. 0 If your engine has a thermostatically controlled cooling fan, inspect all hoses and ducts for proper hook-up (or every 12 months, whichever occurs first). Be sure the valve works properly. This is a Noise Emission Control Service. Applicable only to vehicles in the sold United States. 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. *'I' DATE ACTUAL MILEAGE SERVICED BY: 32,500 Mi/es (52000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). AI? Elnission Corltrol Ser-~~icx~. 0 Lubricate the front suspension, king pin bushings, steering linkage, transmission shift linkage, transfer case shift linkage, parking brake cable guides, rear driveline center splines, front axle propshaft splines, brake pedal springs and clutch pedal springs. Ball joints and king pin bushings should not be lubricated unless their temperature is 10" F (-12" C), or higher. When weather is cold, let the ball joints and king pin bushings warn1 LIPbefore lubrication or they could be damaged. Perform each of the listed lubrication service items at this mileage interval (or every 12 months, whichever occurs first). 7-70