C
T
S
ENGINE
Fuel
Your CTS is equipped with an 18-
gallon fuel tank. When approximately
two gallons are remaining in the
tank, a low fuel warning light will
illuminate in the Driver Information
Center.
The fuel door is located on the right
side of the vehicle and can be
opened by pressing the forward
edge of the door with your fingers.
Coolant Heater (if equipped)
The engine coolant heater can make
starting the engine easier at
temperatures below 0°F (-18°C).
For best results, the coolant heater
should be plugged in at least four
hours before starting your vehicle.
TRANSMISSION
Automatic Overdrive
Automatic Overdrive is best used for
normal driving. To activate passing
gear when going less than 35 mph
(55 km/h), push the accelerator
about halfway down; when doing
more than 35 mph (55 km/h), push
the accelerator all the way down. For
further information regarding gear
selection for various driving
conditions, refer to your Owner
Manual.
Sport Mode (automatic only)
When Sport Mode is activated, your
CTS will provide increased and more
responsive performance parameters.
You will also feel firmer shift
characteristics.
1. The Sport Mode button is located
at the bottom of the shift
designation panel. Press the
button once to turn the Sport
Mode on or off. Sport Mode does
not turn off when the ignition is
turned off. An indicator light in the
instrument cluster will light when
Sport Mode is active.
Powertrain & Maintenance
IMPORTANT
The grade of gasoline you use can affect
the performance of your vehicle and
may even cause damage. Please refer to
your Owner Manual for complete
information regarding suggested octane
ratings for optimum performance.
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