heater control valve
CF Junior Member
Joined: Sep 2007
Posts: 84
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RE: heater control valve
Most GM vehicles use a vacuum controled valve located in the heater hose. The valve may screw right into the block or be independent and supported by the hose.
Look for the heater hose and a vacuum hose going to the same valve.
Look for the heater hose and a vacuum hose going to the same valve.
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