Question about 1996 Buick Park Avenue

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I just purchased 96 Park Ave. Owner told me that original owner (his father in law) had mechanic disable mid vents (AC) because they always blew cool even when unit wasn't on. I have searched this problem and find several instances. The solution usually says to check vacuum line. I can't find the vac line coming through firewall, and not sure what is needed to access under dash since it seems totally covered. Car will cool using defrost vents, but not very effective and tends to fog windshield. Any suggestions? Can someone explain simply how to get under dash access if needed, or tell me exactly where I would find the vac line under hood? Many thanks. Car is pristine and I don't want to screw anything up.

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The best thing I could suggest is to go on-line and buy a alldata subscription for your car it will show you a picture diagram of the parts and where the screws are and where the vacuum motors are located that control the vents. To try to tackle this without seeing it first would be your first mistake, and the time needed to type out the answer and giving you all the pictures you would need is just not that easy, with all data you can type in the diagram for AC Vacuum motors and it will show you detailed diagrams and locations of everything. So go to and select your year and look at the information you will have a year to access the data and all the information to fix this yourself or help you make the decision weather you want to do it or you want to take it to a shop. Twenty five dollars is cheep to see if you can fix it yourself. I hope this helps you make the right decision on your fix. Once you have looked at the information and you want more help then come back and ask for help.

Posted on May 28, 2010


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