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HVAC Schematics

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Module Power, Ground, Serial Data and Blower Controls
GM1915390Courtesy of GENERAL MOTORS CORP.
Fig 2: Mode and Temperature Controls
GM1915392Courtesy of GENERAL MOTORS CORP.
Fig 3: A/C Compressor Controls C67
GM1915397Courtesy of GENERAL MOTORS CORP.
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