Cadillac Repair: air cond 98 deville, air cond, simple test

Question
QUESTION: when i turn the the air cond. two vents blow cold two  hot ? the moter behind the glove box is working,Is there another vent control i should check?
         Thanks Stan

ANSWER: Which blow HOT and which blow COLD ?

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QUESTION: now there all blowing hot,and with everything off heat is comming out on the floor

Answer
IS or HAS the check engine light ever illuminated on the dash while driving the vehicle ?.

Sounds like you have a fault in the AC/HEATER PROGRAMMER (ACM) which will require several pictures and some simple test procedures to diagnose it. E-mail me at: onlineautohelp@msn.com