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:

    Using the Store Command
    The store command allows a phone number to be stored without entering the digits individually. 1. Press . ► For vehicles without a navigation system, the system responds “Ready,” followed ...

    Receiving a Call
    When an incoming call is received, the audio system mutes and a ring tone is heard in the vehicle. • Press and begin speaking to answer the call. • Press to ignore a call. ...

    How OnStar® Service Works
    In order to provide you with OnStar® services, your vehicle’s OnStar® system has the capability of recording and transmitting vehicle information. This information is automatically sent to an ...