My ac only blows out defrost vents. I was told to check vacuum resavoir. I can not locate this on my truck. Please help.
Sep 3, 2010 at 3:37 AM
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JACOBANDNICKOLAS
✓Experienced Mechanic
110,248 POSTS
You are dealing with a vacuum leak. Check the hoses under the dash for damage or leaks. If you are lucky, you may hear a hissing from the leak with the engine running.