Chevrolet 2004 Corvette Owner's Manual page 108

3. Unlock the front of the convertible top by lowering
the latch handles and turning them inward. Push
the latch handles back to the up position.
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4. 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 to be
vertical off the storage compartment lid (C). The
front edge (A) and rear edge (B) should be straight
up and down.