50000 MI or 80000 KM

Lubricate
    Steering and Suspension
      Lubricate the front suspension, ball joints, steering linkage, transmission shift linkage, transfer case shift linkage, parking brake cable guides, and brake front axle. Ball joints should not be lubricated unless their temperature is -12 degrees C (10 degrees F) or higher or they could be damaged.
Adjust
    Clutch, M/T
Replace
    Oil Filter, Engine
    Fluid Filter - A/T
      Only if the vehicle's GVWR is over 8600 lbs.
    Fluid - Transfer Case
    Fluid - A/T
      Only if the vehicle's GVWR is over 8600 lbs.
    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.