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Originally Posted by shorod
The Dual Coolant Control Valve (DCCV) is located under the hood near the radiator. It has two valves in it which regulates the flow of coolant to the dual heater core elements inside the car. There is no valve for the coolant flow inside the car/under the dash. Hopefully the dealer technician that told you that will not be the one working on your car.
On older cars, the heater control valve did serve a very similar purpose to the DCCV, but was often vacuum actuated (DCCV is electronically actuated). Someone who's been in the business awhile may refer to the DCCV as a "heater control valve."
-Rod
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The techician who told me there were two isn't fixing my car. Do you have the part number?