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Discuss 1989 Cadillac Coupe Deville Heater Motor in the alt.autos.gm forum at Car Dealer Forums; I have read the various posts regarding what to look for. Can someone tell me ...
  1. #1
    Petrajn
    Guest

    Default 1989 Cadillac Coupe Deville Heater Motor

    I have read the various posts regarding what to look for. Can someone
    tell me if this is possible...My son just purchased the car. Previous
    owner stated he changed the compressor and since the system was low on
    freon the blower motor will not work. Not on heat or AC. Are we still
    looking at the power module/ blower or is it a relationship to freon
    level ?


  2. #2
    Shep
    Guest

    Default Re: 1989 Cadillac Coupe Deville Heater Motor

    Freon level has no bearing on blower operation.
    "Petrajn" <Jpetrachkoff@neo.rr.com> wrote in message
    news:1156810845.373395.18210@i42g2000cwa.googlegro ups.com...
    >I have read the various posts regarding what to look for. Can someone
    > tell me if this is possible...My son just purchased the car. Previous
    > owner stated he changed the compressor and since the system was low on
    > freon the blower motor will not work. Not on heat or AC. Are we still
    > looking at the power module/ blower or is it a relationship to freon
    > level ?
    >




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  3. #3
    putt@webtv.net
    Guest

    Default Re: 1989 Cadillac Coupe Deville Heater Motor

    >the blower motor will not work. Not on
    > heat or AC. Are we still looking at the
    > power module/ blower


    The blower motor is controlled by BCM (body control module)and the
    control panel setting. Depending on circumstances a signal is sent from
    the BCM to the power module which is then configured to the speed called
    for in the motor. If the motor isn't working, it may be faulty/faulty
    control module/bad or corroded connections/wiring. Check for trouble
    codes in the BCM (F codes) for a possible clue. It's pretty-much a
    detective job with something like this.

    Dave S(Texas)


  4. #4
    Petrajn
    Guest

    Default Re: 1989 Cadillac Coupe Deville Heater Motor

    Thank you guys for confirming my suspicions about the freon level...
    We will put on the Dick Tracy hat and do some checking. Sure wish I had
    my 70 Chevelle again !!


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