45000 MI or 72000 KM

Lubricate
    Steering and Suspension
      Lubricate the front suspension, ball joints, kingpin bushings, steering linkage, transmission shift linkage, transfer case shift linkage, parking brake cable guides, rear driveline center splines, front axle propshaft splines and brake pedal springs. Kingpin and ball joint bushings 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. Be sure the valve works properly.
    Heat Shield, Exhaust
      Vehicles over 8,500 lbs. GVWR only. Inspect shields and underhood insulation For damage or looseness. Adjust or replace as required.
Replace
    Oil Filter, Engine
      Or every 3 months, whichever occurs first.
    Fluid - Differential
      Except 3500 HD models: If driving in dusty areas or towing a trailer, drain fluid and refill every 25 000 km (15,000 miles). More frequent lubrication may be required for heavy-duty or off-road use.
    Engine Oil
      Or every 3 months, whichever occurs first.
Clean/Repack
    Wheel Bearing
      Clean and repack the front wheel bearings (or at each brake relining whichever occurs first).