Thread: heating vents
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Old 01-28-2009, 09:18 PM
rpreburn rpreburn is offline
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first of all what year is your truck. if it is vacummed controlled most likely when you replaced the heater core you pinched the vacuum line that comes through the fire wall when you put it back together or cut it. the line goes from the control head through the fire wall to the engine pull your a/c control head and remove the vacuum harness from the back and see if you can feel any suction if you dont thats your problem just have to trace the line
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