Schematic and Routing Diagrams

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Schematics (Power, Ground, Class 2, And Front Blower Controls)

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Courtesy of GENERAL MOTORS CORP.

Fig 2: HVAC Schematics - Sunload And Ambient Light Sensors

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Courtesy of GENERAL MOTORS CORP.

Fig 3: HVAC Schematics - Front Left And Right Temperature Control

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Courtesy of GENERAL MOTORS CORP.

Fig 4: HVAC Schematics - Recirculation And Mode Door Controls

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Courtesy of GENERAL MOTORS CORP.

Fig 5: HVAC Schematics - Front Air Temperature Sensors

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Courtesy of GENERAL MOTORS CORP.

Fig 6: HVAC Schematics - Auxiliary HVAC Controls - 1 Of 3

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Courtesy of GENERAL MOTORS CORP.

Fig 7: HVAC Schematics - Auxiliary HVAC Controls - 2 Of 3

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Courtesy of GENERAL MOTORS CORP.

Fig 8: HVAC Schematics - Auxiliary HVAC Controls - 3 Of 3

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Courtesy of GENERAL MOTORS CORP.

Fig 9: HVAC Schematics - Auxiliary Temperature Sensors

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Courtesy of GENERAL MOTORS CORP.

Fig 10: HVAC Schematics - A/C Compressor Controls

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Courtesy of GENERAL MOTORS CORP.