Cadillac 2007 CTS Owner's Manual page 210

The outboard switch (A and B) controls the display
of information inside of the tachometer. The
upper button (C) on the inboard switch controls
the display of information inside of the
speedometer. The lower button (D) on the inboard
switch turns the traction control on or off. See
Traction Control System (TCS) (CTS) on page 295
or Traction Control System (TCS) (CTS-V) on
page 297 for more information.
210
These are the controls
for the message center.
They are located on
the left spoke of
the steering wheel.
Speedometer Display
This display will show information relating to
vehicle speed, odometer, and transmission status.
The information displayed can be changed by
pressing (C). Pressing this button cycles the
displayed information as follows: digital
speedometer only, odometer only, speedometer
and odometer, or blank display.
When the transmission is shifted into
REVERSE (R), an R will appear in the
upper right corner.
During slow speed maneuvers, the engine's
computer may command the transmission to
engage the Skip Shift feature. For more
information see Manual Transmission Operation
on page 122.