30000 MI or 48000 KM

Lubricate
    Axle Pivot Bushing
      Heavy Duty Service
    Axle Joint
      Heavy Duty Service
Inspect/Adjust
    Ignition Timing
Check
    Fluid - A/T
      Light Duty Cycle
    EFE Valve
      Check and lubricate if equipped.
Inspect
    Wheel Bearing
      Clean, inspect and repack front wheel bearings when replacing front brake pads and lubricate whenever rear axles are removed.
    Air Injection
      Inspect air injection system.
Replace
    Spark Plug
      Models with catalytic converters.
    Positive Crankcase Ventilation Valve
    Ignition Rotor
    Ignition Cable
    Fuel Filter
    Evaporative Emissions System
      Replace vacuum controlled emission components.
    Engine Oil
      If your mileage is less the 7,500 miles a yearly, replace the engine oil filter at each oil change.
    EGR Valve
      Replace EGR Valve and clean passages.
    Distributor Cap