A/c won't blow inside care, only through defrost. Where do I cnnect hose to blow on 1994 Cadillac DeVille

Need to know where to connect host to get a/c to blow inside.

by in Miami, FL on July 25, 2011
3 answers
ANSWER by on July 25, 2011
There probably is a vacuum leak causing the air to blow defrost only. The leak is usually under the hood and is a small hose.
ANSWER by on July 28, 2011
I had the same problem on a 97 STS. The system on my car works with 2 small rubber vacuum hoses connected near the air conditioner receiver/dryer to hard plastic tubes. The rubber vacuum hoses had dry rotted and were leaking. The 2 short rubber vacuum hoses go near the firewall and connect to a small diameter hard plastic tube that runs through the firewall to the control unit inside the dash... I replaced the 2 short rubber vacuum hoses and the air flows correctly.
ANSWER by on July 30, 2011
make sure that you have vacum suplie from the engine to the hose that going in the a/c if not you may have a broking hose