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  2004 Cadillac DeVille DHS 8Cyl 4.6L

  the ac system comes on when it wants to, when it is on it works great.
  by bjkeatns on 5/31/2010 - Last updated: 1/8/2013 + follow
  Answer - 1/8/2013

  YOU NEED TO REPLACE YOUR REASTAT & MABEE YOUR BLOWER MOTER. iF YOUR FAN ... (view)