Chevrolet 2009 Corvette Owner's Manual page 128

5. Lift upward on the front edge (A) of the convertible
top off of the windshield frame. Then lift upward on
the rear edge (B) of the convertible top so it is
vertical to the tonneau cover (C). The front edge (A)
and rear edge (B) should be straight up.
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6. Tilt the driver's seatback forward and press the
tonneau cover release button located on the
underside of the tonneau cover (C) behind the
driver's seat. Then raise the tonneau cover (C).
If the tonneau cover does not release and
three chimes are heard, check to make sure the
trunk lid is closed. Also, the cover will not release
if the vehicle alarm is armed.