OnStar

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Powertrain
The DTS is equipped with the technologically advanced Northstar 4.6L V-8 engine and mated to the Hydra-Matic 4T80-E four-speed automatic transmission - a proven combination that assures powerful, ...

Language
Select the Language menu and the following will be displayed: - English - French - Spanish Turn the MENU/SELECT knob to select the language. Press the knob to confirm and go back to the last ...

ALL WHEEL DRIVE OFF
If the vehicle has the All-Wheel Drive (AWD) system, this message displays when there is a temporary condition making the AWD system unavailable. The vehicle will run in 2WD. This could be c ...