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Old 11-12-2018, 07:43 PM   #2
Dead Parrot
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Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,809
Re: 1985 C10, Dash vents not blowing at all

I think this one has what you need: http://67-72chevytrucks.com/vboard/s...d.php?t=460942

On my 75, there are 3 actuators. The one by the passenger kick panel does the AC recirculate. One on the bottom switches between heat and defrost. The hidden one in back is the one that switches between heat/def and AC side vents.

Good time to replace the heater core if you don't know how old it is.
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