HVAC Schematics

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 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

Courtesy of GENERAL MOTORS CORP.

Fig 2: Mode and Temperature Controls

Courtesy of GENERAL MOTORS CORP.

Fig 3: A/C Compressor Controls (C67)

Courtesy of GENERAL MOTORS CORP.