Horn
Press 
on the steering wheel pad to sound the horn.
See also:
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use
and displays the CHANGE ENGINE OIL SOON message when it is time to change the
engine oil and filter.
The oil life system ...
Up-Shift Light
The vehicle may have an up-shift
light. It indicates when to shift to
the next higher gear for best fuel
economy.
See Manual Transmission for more information.
For the CTS-V, the tracer ligh ...
Convenience Net (Sedan and Coupe)
The vehicle may have a
convenience net in the rear.
Put small loads behind the net.
It can also be positioned into an
envelope style to hold smaller items.
The net is not for heavier loads.
St ...