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Heater control valve

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Old 03-25-2011, 10:49 PM
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Default Heater control valve
Its been a long time since I posted anything here, but this past weekend I picked up a 1998 2500 4x4 with a 5.9 gasser off of craigs list. Over all its a pretty decent pickup but I took it out for my first real drive and I notice I cant control the temp on the heater. The fan speed works and the position selection works but no temp control, just cold. My question is the heater control valve controlled with vacuum or electric or a cable? Where is the valve located? Any info on this would be great!

Jeff
 
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Old 03-25-2011, 10:56 PM
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It's a cable. Goes from selector to a blend door on the heater box. The blend door has a habit of breaking.
 
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Old 03-25-2011, 11:18 PM
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On a 98? What year did they do to the little servo motor on the bottom of the heater box?
 
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Old 03-25-2011, 11:25 PM
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2000 up . not sure about 99
 
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Old 03-28-2011, 05:22 AM
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Originally Posted by HeyYou
What year did they do to the little servo motor on the bottom of the heater box?
They changed to the electrical in 99. The 98 is still cable controlled.
 
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