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: G101 Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: G103, G105, G107, G108 and G109 Schematic (3.6L)