About a year ago the blower valve broke and it stayed stuck in "Bi-lev" meaning half of the air blows through the dash vents and half through the floor vents. It never was that much of an inconvenience so I just put it off. So this afternoon I pulled off the glove box and then took out the plastic duct to expose the valve. The plate was full of rust (naturally) and the part that was broken was the plastic peice that connects the metal rod to the plate. Now I'm not talking about the metal rod on top of the duct that is connected to the spring, but the one inside of the duct. Now what I don't understand is what rod opens and closes the valve when you change the AC selector to a different position, the one inside or on top of the duct? Becuase whenever I changed the AC selector to a different level, neither of the rods moved. Does the truck need to be running for the AC selector to open and close the valve? Also, where can I get a replacement plastic peice that connects the metal rod to the valve plate. Does LMC sell them? Or do I need to go to the dealer?