Blower Motor issue
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Blower Motor issue in Past Cadillac Vehicle Discussion; Hi everyone, Been driving the 86 cdv on a more constant basis an issue has come up that i have ...
  1. #1
    tallpat's Avatar
    tallpat is offline Cadillac Owners Fanatic
    Automobile(s): 1986 Coupe Deville
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    Oct 2006
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    Columbia, Maryland, United Sta
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    Blower Motor issue

    Hi everyone, Been driving the 86 cdv on a more constant basis an issue has come up that i have heard is a common problem with these cars.My blower motor will not shut down after turning the key off. I discovered this when I came out the next morning to start the car the battery was stone dead
    Did the relay fail? or did the blower motor fail? Is this a difficult repair?

    Thanks for your help in advance.

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: Blower Motor issue

    I would suspect #12. MODULE. AIR CONDITIONING (A/C) Electric Temperature and Motor Control

    http://parts.nalleygmc.com/showAssem...rimLevel=14344

  4. #3
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
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    Re: Blower Motor issue

    Ranger is most likely correct. The power module fails. 30 minute replacement.

  5. #4
    tallpat's Avatar
    tallpat is offline Cadillac Owners Fanatic
    Automobile(s): 1986 Coupe Deville
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    Thread Starter

    Re: Blower Motor issue

    Ranger, Thanks I do have question these connectors are origina,l there are 2 gray plastic locking pins on either side of the connector I cant budge them without breaking them. Is that ok? I want to temporarly disconnect the power to the motor control module so I wont have to keep disconnecting the battery everytime i go to start the car.

  6. #5
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
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    Re: Blower Motor issue

    They do slide out but yes you can cut them, Then unlock the normal terminal locks and remove.

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