1996 Seville SLS, Duel Zone A/C - cold/hot
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Electrical Technical Information Discussion, 1996 Seville SLS, Duel Zone A/C - cold/hot in Item Specific Cadillac Discussion; Hi Guys! I hope that someone can help. With A/c on, drivers side vents (and rear seat), blow cold, the ...
  1. #1
    bolvey.1's Avatar
    bolvey.1 is offline Cadillac Owners Member
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    1996 Seville SLS, Duel Zone A/C - cold/hot

    Hi Guys!
    I hope that someone can help.
    With A/c on, drivers side vents (and rear seat), blow cold, the passenger side vents blow HOT.
    I pulled the passenger under dash pannel off and looked for anything obvious.
    I cycled the system from A/C to heat and rotated vent positions to check for vent door movements and to indicate a vacuum leak.

    All seems to check out OK.

    What controls the duel zone system?

    Can anyone help?

    PS the car sat for 2 years. I bought it in April from the estate of an elderly women with 36000 miles on it.

    Low refrigerant light was on, Compressor would not run. I added 2 lbs of refrigerant (via gravity feed), disconnected the battery to clear the code, and the A/C compressor took off.

    Now, constant heat from passenger vents.
    I appreciate your help.
    Mark

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 1996 Seville SLS, Duel Zone A/C - cold/hot

    I have the same (though intermitent) problem with my '97 Deville. I have not been able to find a cause but I have found a simple fix. I simply run the temp up to 90 then back down to 72 or whatever and it opperates normally from then on. Hope this helps.

  4. #3
    bolvey.1's Avatar
    bolvey.1 is offline Cadillac Owners Member
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    Red face Re: 1996 Seville SLS, Duel Zone A/C - cold/hot

    Thank you!
    I'll try it and let you know if it works for me.
    Mark

  5. #4
    bolvey.1's Avatar
    bolvey.1 is offline Cadillac Owners Member
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    Re: 1996 Seville SLS, Duel Zone A/C - cold/hot

    Hi Ranger,

    I tried your suggestion with no luck.
    Any other ideas?
    Thanks,
    Mark

  6. #5
    cruzajc1's Avatar
    cruzajc1 is offline Cadillac Owners Enthusiast
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    Re: 1996 Seville SLS, Duel Zone A/C - cold/hot

    Either a short or the Temparture Door Actuator Motor under the glove box needs to be replaced. Your lucky, if it was the driver side, it would be big $$$ Hope this helps.


    Gus

    cruzajc1@aol.com

  7. #6
    bolvey.1's Avatar
    bolvey.1 is offline Cadillac Owners Member
    Automobile(s): 2000 catera
    Join Date
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    Re: 1996 Seville SLS, Duel Zone A/C - cold/hot

    I broke down and took it to the dealer.

    Temp door Actuator and the compressor was bad.

    Thank God for extended warranties!

    $1500 for ice cold air!

    Mark

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