Thanks for these post! I followed the vacuum line from manifold all the way under the battery tray and sure enough the hose had a huge split in it. I had some 1/4 inch hose already in my tool box, replace it and the air is blowing again through the front vents and any other vents the climate control is turned too. Saved a couple hundred bucks and my cost was FREE!!!! I now hope my college son appreciates my labor.