How to Replace a Heater Control Valve

How-to » Body & Interior » Interior, Heating & A/C » How to Replace a Heater Control Valve

Note: This is a general guide for all vehicles.

Parts

Tools

Difficulty

Moderate

Steps

so my heating core is on bypass. And I see the 2 tubes to hook up . But why is there 3 connections.? What is the middle one for ? Please help

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