Oldsmobile/Buick Repair: Buick Rendezvous 2003, buick rendezvous, vacuum leak

Question
There is a hissing/rubbing noise coming from behind the instrument panel. It sounds somewhat like a vacuum leak. Any ideas?

Answer
Does the noise occur when the vehicle is STOPPED  or when it is being driven ?.

What on the vehicle does NOT work properly ?.


What mechanical work or ANY kind of work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made as a vacuum line may have been knocked loose or a wire connection came loose, Look around in the area where work was performed.


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