The A/C on my Camaro doesn't come out of main vents. It only comes out through the floor vents. I know this is vacuum operated, and I think I might have lost track of a hose that controls this when I replaced my intake manifold gasket. I've tried looking back behind the engine and I don't see any hose loose or hanging off. I can't find anything online regarding this. Any ideas? I need to do something quick as its starting to get hot around here.

 

Try obtaining a set of GM Factory Carline Series Shop Manuals for your car on eBay. Depending upon the years involved... you can usually find a set of these absolutely indipensible manuals for around $40-$50.00 and these are a must to trace down what looks here like a problem with the vacuum controller lines that actuate the various baffles and components within your in-dash air handler to solve the problem. It could be something as simple as a cracked vacuum hose or that one of the lines has pulled free from its connecting vacuum spout(s) on either the manual switch block or further down under the dash panel where the baffles are hidden to cycle either heat of a/c evap air.