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Re: Drivers Side Cab Vent
Its the kick panel vent. They are manually operated, pull the knob aft to open. On A/C trucks the right vent is used for outside air introduction during blend operation. If it is sticking/stiff it might be rusty from non-use or there could be a lot of debris down inside blocking it. Either way take a look and lube the moving parts then see what happens. Might have to pull it apart to make it work. If you don't have one it would be a good idea to buy a driver's handbook (owners manual) in addition to the factory service manuals.
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