Chevrolet 2004 Corvette Owner's Manual page 217

This knob is located on the center console. Turn it to
select the suspension of your choice.
TOUR: Use for normal city and highway driving.
This setting provides a smooth, soft ride.
SPORT: Use where road conditions or personal
preference demand more control. This setting provides
more "feel", or response to the road conditions.
You can select a setting at any time. Based on road
conditions, steering wheel angle and your vehicle speed,
the system automatically adjusts to provide the best
ride and handling. Select a new setting whenever driving
conditions change.
There are three Driver Information Center (DIC)
messages that are displayed when a malfunction occurs
with the Selective Ride Control system. Refer to DIC
Warnings and Messages on page 3-58.
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