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Wiring Diagrams

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Transmission Electronic Control System Wiring Diagram (2001-02 Sierra, Sierra HD, Silverado & Silverado HD - 6.6L)
Fig 2: Transmission Electronic Control System Wiring Diagram (2001-02 Sierra, Sierra HD, Silverado & Silverado HD - 8.1L)