30000 MI or 48000 KM
LubricateSteering and Suspension
Lubricate chassis components (or every 12 months whichever occurs first). Lubricate the front suspension, ball joints, steering linkage, transmission shift linkage, transfer case shift linkage, parking brake cable guides, rear driveline center splines. Ball joints should not be lubricated unless their temperature is -12 degrees C (10 degrees F) or higher or they could be damaged.
Inspect
Radiator Cooling Fan
If your engine has a thermostatically controlled cooling fan, inspect hoses and ducts for proper hook-up (or every 12 months, whichever occurs first). Be sure the valve works properly.
Heat Shield, Exhaust
Inspect shields and underhood insulation For damage or looseness. Adjust or replace as required.
Fluid - Differential
3500 HD models only; Change axle fluid if the vehicle is driven in extreme overload, trailer towing and or high speed (above 45 mph or 70 km/h) conditions for extended periods of time. Check front/rear axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking.
Air Cleaner Housing
Inspect the air intake system installation to assure that gaskets are 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 and the cover fits tightly. Tighten connections and fasteners or replace damaged parts as necessary. U.S. vehicles only.
Replace
Oil Filter, Engine
Or every 12 months, whichever occurs first.
Fuel Filter
Engine Oil
Or every 12 months, whichever occurs first.
Clean/Repack
Wheel Bearing
Clean and repack the front wheel bearings (or at each brake relining whichever occurs first).