Air works great?
Have a vibrating noise comming from ac seems like when compressor kicks on . on 2004 GMC Yukon XL 1500
could be a blockage and compressor may be going out. i rec getting it ck'd before it causes more damage
Check for an A/C hose or line "grounding out", meaning it is rubbing against something that it should not. Also I have seen a dirty cabin air filter cause a blower motor noise.