Cadillac 2006 XLR - Manual (Page 104)

12. Manually move the front tonneau to the open
position. Once the front tonneau is open, fold
the side wings in by gently pressing them in. Do not
force the wings. If they are hard to move, make
sure the front tonneau is open all the way.
13. Reach in from the side of the vehicle and under the
top to remove the headliner plug. The plug will be
located in the center of the top near the front.
14. Insert the wrench into the bolt beneath the plug
location. Turn the wrench about one-quarter turn
counterclockwise until it stops while gently pulling up
on the center of the top to release it.
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