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Home » Public Forums » GMCnet » [GMCnet] Is the 3/4 inch heater hose to the dash heater from the engine? And the 5/8 inch hose bach to the cooling system.
[GMCnet] Is the 3/4 inch heater hose to the dash heater from the engine? And the 5/8 inch hose bach to the cooling system. [message #319422] Wed, 21 June 2017 20:15 Go to previous message
BobDunahugh is currently offline  BobDunahugh   United States
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Registered: October 2010
Location: Cedar Rapids, IA
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The vacuum controlled 5/8 heater water valve is directional that's in the 5/8 inch return hose. Am I correct? Bob Dunahugh 78 Royale
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