Chevrolet 2001 Corvette Owner's Manual page 161

Remember, you must reset the OIL LIFE yourself after
each oil change. It will not reset itself. Also, be careful
not to reset the OIL LIFE accidentally at any time other
than when the oil has just been changed. It can't be reset
accurately until the next oil change.
To reset the system, see "How to Reset the Change Oil
Soon Message" in the Index.
Also, see "Engine Oil, When to Change" and
"Maintenance Schedule" in the Index.
4 OPTIONS
This button allows you to choose personal options that
may be available on your vehicle, depending on the
options your vehicle is equipped with. Some of these
functions work along with the remote keyless
entry transmitter.
When returning to the options menu, the first item of the
options list will always be displayed, not the one you
were last in when you changed buttons.
The following are the options listed under the
OPTIONS button:
Twilight (Optional, Standard in Canada)
Press the OPTIONS button until TWILIGHT
appears on the display, then use the RESET button to
page through the following selections:
D
-
TWILIGHT ON
D
-
TWILIGHT OFF
-
OFF
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