Why would the AC in your 1996 Tahoe make a loud humming noise?
Hey Kelli==You probably will find it if you simply remove the blower motor which is on the pass side of the engine compartment. There are about 6 screws that hold it on and that is it. GoodluckJoe
What would cause a consistent humming noise on a Saab 9-5 wagon It sounds like something is stuck like a cassette or antenna and is coming behind the center dash?
If this is around a 1996 model, next to the seat heater buttons on the right side is a button with a hole in it. This is where the noise is coming from. It is some kind of air monitor and is not needed on a used car. Pull panel on right side of center consol at bottom to access this sensor and disconnect it.