OnStar

See also:

Safety
Standard safety items include four-wheel-disc, antilock brakes and a StabiliTrak electronic stability system. The system has rollover mitigation technology that senses imminent rollovers and appli ...

Engine & Transmission
The CTS comes standard with a 3.0-liter V-6 engine, but our test car's optional 3.6-liter V-6 and six-speed automatic transmission are a special pair among drivetrains. The transmission's shifts a ...

Anti-theft Alarm System Message
SERVICE THEFT DETERRENT SYSTEM This message displays when there is a problem with the theft-deterrent system. The vehicle may or may not restart so you may want to take the vehicle to your dealer ...