See also:

Maintenance Schedule
Owner Checks and Services At Each Fuel Stop . Check the engine oil level. See Engine Oil  . Once a Month . Check the tire inflation pressures. See Tire Pressure  . . Inspect the tires f ...

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 ...

Automatic Door Locks
The vehicle may have an automatic lock/unlock feature. This feature can be programmed using the Driver Information Center (DIC). See Vehicle Personalization   for more information on DIC ...