1995 GMC Yukon Owner's Manual - Page 435

I Maintenance Schedule I - Diesel Engines 0 Check the air intake system installation to assure that gaskets are I properly sealed and that all hose connections, fasteners and other components are tight. Also check to be sure 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 a l l 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 vehicles sold in the to United States. 0 Check redfront axle fluid level and add tluid as needed. Check constant velocity joints and axle seals for leaking. 9:'1: DATE SERVICED MILEAGE ACTUAL BY: 22,500 Miles ( 6 000 km) 3 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emissimz Control Sc~rvicc~. 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 warm up before lubrication o r they could be damaged. Perform each of the listed lubrication service items at this mileage interval (or every 12 months, whichever occurs first). 0 Rotate tires. See "Tire Inspection and Rotation" i n the Iqdex for proper rotation pattern and additional information. See "'Tires" in the Index. I DATE I ACTUALMILEAGE I SERVICED BY: I 7-67