WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Left Exhaust Manifold Heat Shield & Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the heat shield bolts (2).
Remove the heat shield (1) from the exhaust manifold.