Interior

Five occupants get to enjoy soft all-leather seats. Offerings include heated and ventilated seating and a heated steering wheel. The STS features genuine eucalyptus wood and aluminum trim.

Eight-way power front seats include four-way power lumbar adjustment, and a memory feature is optional. Trunk space totals 13.8 cubic feet.

Options include Bose 5.1 Studio Surround Sound and a DVD/CD changer that can play DVD audio discs as well as MP3 CDs. A DVD-based navigation system is available. General Motors' OnStar communication system includes automatic crash notification.

    See also:

    Removing the Spare Tire and Tools
    The equipment needed to change a flat tire is stored under the storage tray, located on the driver side trim panel, over the rear wheelhouse. Regular Wheelbase Shown, Extended Wheelbase Similar. ...

    Radio(s)
    VOL/ : Press to turn the system on and off. Turn to increase or decrease the volume. FM/AM: Press to select between FM or AM. : Press to select XM™, if equipped. TUNE/TONE: Turn to select ...

    How to Add Coolant to the Coolant Surge Tank
    Notice: This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged. If no problem is found, check to see if co ...