Question about 2001 Cadillac Sts

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Problem with AC, dual climate zones

The AC on my Cadillac STS only blows cold air on the passenger side. The driver side is still blowing hot. I recently added some new freon. >? Temperature sensor ?

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  • c2craig May 23, 2008

    I think more freon fixed the problem. Its blowing ice cold now. I just hope there isnt a leak

  • Anonymous Mar 21, 2014

    why does my driver side vents blow heat while the passenger side will blow cold when the ac is on?

  • Anonymous Mar 21, 2014

    driver side blows hot while passenger side blows cold when ac is on 2001 deville

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  • 119 Answers

The temperature blend door on the driver's side might be broken or stuck. Also, if this vehicle does not have the correct amount of refrigerant, it will do what you are describing.

Posted on May 22, 2008

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