Cadillac 2006 XLR - Manual (Page 102)

7. Move the rear tonneau rearward and up to the
stored position. Pull from the center of the tonneau
to keep pressure even. The rubber bumper on
each corner will fit against the underside of the
trunk decklid.
8. Push both sides of the rear tonneau over-center link
up until they stop to lock the linkage.
9. Close the hydraulic pump valve by turning it
clockwise with your hand until it stops.
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