noise on 1993 Cadillac DeVille

my air conditioner and heater have stopped working and it makes a loud noise when they are turned on and when you first start the car can you help me diagnose this problem

by in Ardmore, OK on April 28, 2009
2 answers
ANSWER by on April 30, 2009
Where is the loud noise coming from?
ANSWER by on April 19, 2010
my ass is where the noise is coming from.
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