Chevrolet 2006 Corvette Owner's Manual page 80

Express-Down Window
This feature is on both power windows. Press the front
of the switch to the second position to activate the
express-down feature. If you want to stop the window
as it is lowering, press the switch again.
Window Indexing
This feature automatically lowers the window a small
amount when the door is opened. Then, when the door
is closed, the window will raise to its full up position.
If either window does not index properly, it could be due
to loss of power. Before returning to your dealer for
service, perform the power window initialize procedure
following.
2-18
Power Window Initialize
After a power reconnect such as battery replacement, the
window index-up feature will not function until the system
is initialized. Once power is restored, do the following:
1. Close the door.
2. Raise the window by pulling up the switch.
3. Hold the up switch for three seconds after the
window is closed. Release the switch.
4. Hold the up switch again for three seconds and
release.