HVAC Schematics

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power, Ground, Serial Data, and Front Blower Controls

Courtesy of GENERAL MOTORS CORP.

Fig 2: Sunload Sensor Inputs

Courtesy of GENERAL MOTORS CORP.

Fig 3: Front Left and Right Temperature Control

Courtesy of GENERAL MOTORS CORP.

Fig 4: Recirculation and Mode Door Controls

Courtesy of GENERAL MOTORS CORP.

Fig 5: Front Air Temperature Sensors

Courtesy of GENERAL MOTORS CORP.

Fig 6: A/C Compressor Controls

Courtesy of GENERAL MOTORS CORP.