OnStar

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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 ...

Delayed Locking
With this feature, you can delay the actual locking of the doors. When the power door lock switch is pressed when the key is not in the ignition and the driver door is opened, a chime will so ...

Rear Window Defogger
The rear window defogger uses a warming grid to remove fog from the rear window. (Rear Window Defogger): Press to turn the rear window defogger on or off. It automatically turns off after it has ...