Quote:
Originally Posted by 0311Chevy8152
What is this, I've never seen it before. Instead of a handle to open and close the vent, this thing is in front of it and attached to it. It is the passenger side floor vent.
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All trucks have a direct manual operation driver's inet air vent.
On non-A/C trucks there is a matching direct manual operation passenger inlet air vent.
However on A/C trucks like yours, was, this became the air recirculation door. It is vacuum motor operated to allow interior air to be sucked into the A/C inlet plenum when the outside/fresh air door (also vacuum motor operated) is closed.
Might be best to review the factory service manual on the A/C system if the picture does not clear this up for you.
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