First Engine Oil Change After Every 240 000 km/150,000 Miles

• Engine cooling system drain, flush, and refill, cooling system and cap pressure check, and cleaning of outside of radiator and air conditioning condenser (or every 5 years, whichever occurs first). See Engine Coolant (4.6L Engine) or Engine Coolant (3.9L Engine). An Emission Control Service.

• Engine accessory drive belt inspection for fraying, excessive cracks, or obvious damage and replacement, if needed. An Emission Control Service.

    See also:

    Potential Issues
    Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...

    Limited-Slip Differential
    Vehicles with a limited-slip differential can give more traction on snow, mud, ice, sand, or gravel. It works like a standard differential most of the time, but when traction is low, this fea ...

    Tires
    Use a stiff brush with tire cleaner to clean the tires. Notice: Using petroleum-based tire dressing products on the vehicle may damage the paint finish and/or tires. When applying a tire dressing, al ...