Heater Fan intermittent working..?

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Johnb21

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Feb 22, 2015
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Strange to me but probably not to others. I can get the hvac fan to work while the key is in ACC mode and after I change the flow (ex, from floor to dash). So while in ACC and the fan running, I start the truck and the fan shuts off once the key is cycled (makes sense) but doesn't come back on after the truck is running.
I was able to repeat this pattern 4-5 times, but can not get the fan to run while the engine is running.
Please help! Going to be below zero tonight.
Thanks all!
 
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