WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing/Installing Rear Compartment Lid Lock Striker
Courtesy of GENERAL MOTORS CORP.
Mark around the striker with a grease pen to retain the position of the lock striker.
Remove the lock striker bolts (1).
Remove the lock striker from the rear compartment.