No Response From TCM (Transmission Control Module) - 8HP45/8HP70: Notes
WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article
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Fig 1: Electronic Shift Module/Transmission Control Module Circuit Diagram