Engine Oil Additives/Engine Oil Flushes

Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.

Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.

    See also:

    Finding a Program Type (PTY) Station(RDS and XM™)
    To select and find a desired PTY perform the following: 1. Press the TYPE button to activate program type select mode. P-TYPE and the last selected PTY displays. 2. Turn the TYPE knob or press ...

    How OnStar Service Works
    : This blue button connects you to a specially trained OnStar advisor to verify your account information and to answer questions. : Push this red emergency button to get priority help fro ...

    Passenger Sensing System
    The passenger sensing system turns off the front outboard passenger frontal airbag and knee airbag under certain conditions. No other airbag is affected by the passenger sensing system. See Pass ...