30000 MI or 48000 KM

Check
    Brakes and Traction Control
Inspect
    Throttle Body
      Inspect throttle body bore and valve plates for deposits, open the throttle valve and inspect all surfaces. Clean as required.
    Air Filter Element
      Inspect the air cleaner filter if the vehicle is driven in dusty conditions. Replace the filter if necessary.
Replace
    Oil Filter, Engine
    Engine Oil
      Change engine oil and filter as indicated by the GM Oil Life System (or every 12 months, whichever occurs first). Reset the system.
Rotate
    Tires