HVAC Control Module – GM (86788378)

a HVAC Control Module from GM Genuine Parts, part 86788378, is a direct replacement for the unit fitted at the factory. The unit plugs into the factory harness and runs the system it was programmed for. Match 86788378 to the number on the failed component. Count the pins or check the connector keyway if two numbers look interchangeable. 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.