OnStar Services

See also:

Reclining Seatbacks
WARNING! Sitting in a reclined position when the vehicle is in motion can be dangerous. Even when buckled up, the safety belts cannot do their job. The shoulder belt will not be against yo ...

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, ...

Steering Wheel Controls
Some audio steering wheel controls could differ depending on the vehicle's options. Controls that can be adjusted at the steering wheel may include: SRCE: Press to switch between AM, FM, o ...