WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power, Ground and Blower Motor Controls - Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 2: Compressor Controls - Schematic
Courtesy of GENERAL MOTORS CORP.
Fig 3: Air Temperature and Mode Controls - Schematic