HVAC Schematics

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Schematics (Power, Ground, Serial Data & Front Blower Controls)

Courtesy of GENERAL MOTORS CORP.

Fig 2: HVAC Schematics (Sun Load & Ambient Light Sensors)

Courtesy of GENERAL MOTORS CORP.

Fig 3: HVAC Schematics (Front & Right Temperature Control)

Courtesy of GENERAL MOTORS CORP.

Fig 4: HVAC Schematics (Recirculation & Mode Door Controls)

Courtesy of GENERAL MOTORS CORP.

Fig 5: HVAC Schematics (Front Air Temperature Sensors)

Courtesy of GENERAL MOTORS CORP.

Fig 6: HVAC Schematics (A/C Compressor Controls)

Courtesy of GENERAL MOTORS CORP.