Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Have you replaced your cabin air filter?
Sorry, it doesnt have one. But if you can hear the blend doors moving you and your blower is working you must have some sort of blockage. How long ago did it work correctly?
It is a fairly simple system. Here is a diagram. I would say that if you can see the blend door moving, then it is probably the intake that is clogged.