Chevrolet 2002 Corvette Owner's Manual page 106

Increasing Speed While Using Cruise Control
There are two ways to go to a higher speed:
D
Use the accelerator pedal to get to the higher speed.
The speed will not begin to increase until sufficient
pedal travel is achieved. Press the SET button at
the end of the lever, then release the button and
the accelerator pedal. You'll now cruise at the
higher speed.
D
Move the cruise switch to R/A. Hold it there until
you get up to the speed you want, then release
the switch. (To increase your speed in very small
amounts, move the switch to R/A briefly, then
release it. Each time you do this, the vehicle will
go about 1 mph (1.6 km/h) faster.)
The Driver Information Center (DIC) will display the
cruise set speed.
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Reducing Speed While Using Cruise Control
There are two ways to reduce speed while using
cruise control:
D
Press in the SET button at the end of the lever
until you reach the lower speed you want, then
release it.
D
To slow down in very small amounts, press the
SET button briefly. Each time you do this,
you'll go about 1 mph (1.6 km/h) slower.
The Driver Information Center (DIC) will display the
cruise set speed.
Passing Another Vehicle While Using Cruise Control
Use the accelerator pedal to increase speed. When you
take your foot off the pedal, the vehicle will slow down
to the cruise control speed you set earlier.