30000 MI or 48000 KM

Inspect
    Fluid - Transfer Case
    Brake Hose/Line
Replace
    Spark Plug
      Replace the top row of spark plugs on 4.7L engines.
    Oil Filter, Engine
    Engine Oil
    Air Filter Element
      Replace the air filter element if not using your vehicle for any of the following: Dusty or off-road conditions.
Rotate
    Tires