Chevrolet 2007 Corvette Owner's Manual page 150

1. Open the tonneau cover by pulling the
emergency release cable.
The tonneau cover emergency release cable
is located behind the passenger's seat
head restraint, on the underside forward edge
of the tonneau cover. Also, see Hatch/Trunk
on page 82 for information on the emergency
trunk release handle.
Be careful when opening the tonneau cover
by hand. If the tonneau cover is opened
quickly, damage can occur to the hinging
mechanism, which can prevent proper
operation of the convertible top.
150
2. Locate the pressure release bolt on the front
side of the hydraulic pump.
3. Use the wrench, located in the console,
and turn the pressure release bolt
counterclockwise one revolution, to relieve
pressure to the hydraulic pump. This will allow
you to manually raise the convertible top.
4. Then follow the steps under raising the
manual convertible top. See "Convertible Top
(Manual)" under Convertible Top (Manual)
on page 139 or Convertible Top (Power)
on page 146