1995 Chevrolet Suburban Owner's Manual - Page 435

I Maintenance Schedule I - Diesel Engines I 40,000 Miles (64000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 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 or they could be damaged. Perform each of the listed lubrication service items at this mileage interval (or every 12 months, whichever occurs first). 0 Inspect shields and underhood insulation for damage or looseness. Adjust or replaceas required. This is a Noise Emission Control Service. Applicable only to vehicles sold in the United States. 0 Check the air intake system installation to assure that gaskets are properly sealed and that all hose connections, fastenersand other components are tight. Also check to be sure that the air cleanerhousing is properly seated, the cover fits tightly and the wing nuts are tight. Tighten connectionsand 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 sold in the United States. 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle sealsfor leaking. *#' DATE ACTUAL MILEAGE SERVICED BY: 7-72