See also:

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...

When to Change Engine Oil
This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, an ...

A missing ingredient?
In order to make the CTS Sport Wagon appealing price-wise, the base car is equipped with a 270-hp 3.0L V6, a 6-speed automatic gearbox and RWD. Price: $44,325. Moving up to AWD adds an extra $2,62 ...