resetting the automatic climate control on 02 deville
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, resetting the automatic climate control on 02 deville in Past Cadillac Vehicle Discussion; For starters, I apologize in advance if this issue has been covered, but I swear I have no luck with ...
  1. #1
    cosmictrucker's Avatar
    cosmictrucker is offline Cadillac Owners Member
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    resetting the automatic climate control on 02 deville

    For starters, I apologize in advance if this issue has been covered, but I swear I have no luck with using this forums search engine. (it sucks) or I'm missing something. I've tried every phrase I could think of.

    02 DeVille base:


    After living with a screwed up blend door motor for the past few years, I finally fixed the issue.

    I'm experiencing a problem with the "Automatic" climate control before and after the blend door fix. No fan but I can hear the a/c compressor cycle on and off with "Automatic" selected.

    If I hit the fan speed manually, everything seems to work fine. Only the automatic feature isn't working.

    I remember reading somewhere on here about resetting the computer for the automatic climate control, but I failed to turn up anything with this forums search.

    I disconnected the battery for a few minutes, but that didn't fix the problem.

    Any help or suggestions is appreciated.

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  3. #2
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
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    Re: resetting the automatic climate control on 02 deville

    Have you pulled the codes (DTCs) from the dash?
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
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  4. #3
    00 Deville's Avatar
    00 Deville is offline Cadillac Owners Connoisseur
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    Re: resetting the automatic climate control on 02 deville

    Quote Originally Posted by cosmictrucker View Post

    I remember reading somewhere on here about resetting the computer for the automatic climate control, but I failed to turn up anything with this forums search.

    I disconnected the battery for a few minutes, but that didn't fix the problem.
    The reset involves pulling a fuse in the engine compartment fuse block for 20-30 seconds. Pulling the battery cable does the same thing as pulling the fuse. Both will cause all HVAC actuators to go thru full range to calibrate the system on initial power up.

    Pull the codes as Chris suggested above.

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: resetting the automatic climate control on 02 deville

    Quote Originally Posted by cosmictrucker View Post
    For starters, I apologize in advance if this issue has been covered, but I swear I have no luck with using this forums search engine. (it sucks) or I'm missing something. I've tried every phrase I could think of.
    This search engine DOES suck. For future searches try Google. eg. climatecontrol>cadillacforums

    P.S.
    Be sure to use cadillacforums as opposed to cadillacforum

  6. #5
    cosmictrucker's Avatar
    cosmictrucker is offline Cadillac Owners Member
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    Thread Starter

    Re: resetting the automatic climate control on 02 deville

    Quote Originally Posted by RippyPartsDept View Post
    Have you pulled the codes (DTCs) from the dash?

    Yeap, BO249 is still set as a current code.

    I still have the blend door motor clocked wrong. At least the main vents are getting air now, but not so much for defrost. I'm going to wait until cooler weather before I dig back into this.

    Thanks for the help.

  7. #6
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
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    Re: resetting the automatic climate control on 02 deville

    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
    Rippy is a Cadillac, Hummer, Saturn & Saab dealership & Official Saab Service Center
    ~~ Family owned and operated in Wilmington, NC since 1946 ~~
    We offer all forum members discounts on parts and freight
    phone: 800-RIPPY-22
    <-- insert standard boilerplate about posts not necessarily representing my employer, etc -->

  8. #7
    basscatt's Avatar
    basscatt is online now Cadillac Owners 10000+ Posts
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    Re: resetting the automatic climate control on 02 deville

    this might be useful -
    read the rest of it starting on page 3-11 in the Owners Manual -

    Climate Control Personalization

    This feature allows two different drivers to store and
    recall their own climate control settings.
    These settings include the set temperatures
    for the driver and front passenger,
    the air conditioning, the airflow mode and
    the fan speed. (This feature does not recall recirculation
    or defrost).


    in other words -
    you might have the fan speed set very low in the AUTO mode -
    in your PERSONALIZED Memory settings -

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