Harness – GM (86563790)

Part 86563790 is the GM Genuine Parts Harness for the factory location it serves. The unit routes power and signal between the factory connectors it plugs into. Catalogue application notes: Regular cab, headliner & components, without auto dim mirror. Check the part number stamped or moulded on the original against 86563790 — a number that looks close can belong to a different circuit. GM Genuine Parts are the components installed during production or validated by General Motors for GM vehicles. Held in US stock for same-week dispatch.