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    Automatic Operation
    AUTO (Automatic): When automatic operation is active the system will control the inside temperature, the air delivery, and the fan speed. Use the steps below to place the entire system in automatic ...

    Refreshed design, inside and out
    With overall dimensions slightly increased, the new STS conveys more of the design flair that has become a Cadillac signature. Up front, the dual-textured, multi-faceted grille first seen on the S ...

    Fuel Additives
    To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control ...