Yesterday, I tested a fan speed relay pack in my caddy prior to sending it out to another member. I discovered that everything on my climate control works still except the blend door for the defroster. I get a little air out of the dash top and alot of air out the floor. I tried my fan speed relay pack (a fairly new AC delco) and it did the exact same thing. Playing with the controls and switching between dash, floor, and defrost seemed to make a little more air come out the dash top, but not alot more.
Anyone have any suggestions? Bad vaccum line? Debris in the way? (Anything is possible since I haven't used the climate control in years).
Also, my fan squeaks. I have 5 or so spares on hand, but I'd rather just fix mine if that is possible.