Schematic Wiring 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: Automatic Transmission Schematic Icons Table

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Fig 2: Automatic Transmission Controls Schematics (Valve Controls And Brake Switch)

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Fig 3: Automatic Transmission Controls Schematics (Switch Inputs)

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Fig 4: Automatic Transmission Controls Schematics (Tow/Haul Switch And PNP Switch Inputs)

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Fig 5: Automatic Transmission Controls Schematics (Vehicle Speed Signal And 4WD Low Signal)

Courtesy of GENERAL MOTORS CORP.