Cadillac 2000 Catera Owner's Manual page 89

Upshifting and downshifting of the transmission is
automatically modified to prevent undesired shifting
when your vehicle is towing a trailer or when you
are driving in hilly or mountainous terrain. This is
also normal.
Sport Mode Button
Press the "S" button once to select the sport feature.
Press it again to return to the normal driving mode.
2-24
For a firmer shift and
increased performance,
you may choose the sport
mode. This button lets
you change from a normal
driving mode to a sport
driving mode. It is located
on the shift lever handle.
When you start the engine, your vehicle will be in
normal mode. For general driving conditions, use the
normal mode. It will remain in normal unless you select
the sport feature.
If this light begins flashing while you are driving, there
may be a fault in the automatic transmission. Have your
vehicle serviced.
This light on the instrument
panel cluster will come
on when the sport mode
is selected.