1995 Chevrolet Suburban Owner's Manual - Page 432

I Maintenance Schedule I - Diesel Engines 30,000 Miles (48 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. I 0 Lubricate the front suspension, kingpin 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). Drain, flush and refill the cooling system with new coolant (or every 24 months, whichever occurs first). See"Engine Coolant" in the Index for what to use. A n Emission Control Service. Also inspect the hoses and replace them if they are cracked, swollen or deteriorated. Tighten all hose clamps (except constanttension clamps). Remove debris and clean the outside of the radiator and air conditioning condenser.Wash the radiator neck. To ensure proper operation, pressuretest the radiator and cap. 0 Replace air cleaner filter. Replace filter more often under dusty conditions. An Emission Control Service. 'k 0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). 0 Replace fuel filter. Replace filter sooner if it is clogged.? 0 Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This isa Noise Emission Control Service. Applicable onlyto vehicles sold in the UnitedStates. (Continued) 7-69