18000 MI or 28800 KM

Lubricate
    Steering and Suspension
      Heavy Duty Emissions Only; Lubricate the front suspension (or every 12 months, whichever occurs first). Lubricate 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. Ball joints and kingpin bushings should not be lubricated unless their temperature is -12 degrees C (10 degrees F) or higher or they could be damaged.
Inspect
    Fluid - Differential
      Heavy Duty Emissions Only; Inspect front/rear axle fluid level and add fluid as needed. Inspect constant velocity joints and axle seals for leaking.
    Brakes and Traction Control
      Heavy Duty Emissions Only.
Replace
    Oil Filter, Engine
      Heavy Duty Emissions Only; Or every 12 months.
    Engine Oil
      Heavy Duty Emissions Only; Or every 12 months.
Rotate
    Tires
      Heavy Duty Emissions Only.