Flash Procedure
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Flash Procedure in Past Cadillac Vehicle Discussion; Hello I have had a new A/C compressor installed in my 93 Eldorado Touring Coupe and now find out that ...
  1. #1
    Coachman is offline Cadillac Owners Member
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    Flash Procedure

    Hello I have had a new A/C compressor installed in my 93 Eldorado Touring Coupe and now find out that the cpu need to be flashed to keep the blower motor from running and running down the battery. Any suggestion on how to do this?

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  3. #2
    Harry Yarnell is offline Cadillac Owners Connoisseur
    Automobile(s): 2001 eldorado,2008 DTS,2005 XLR, '96 eldo,'95 eldo,' 89 eldo,'78 eldo,'11CTS-V
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    Re: Flash Procedure

    No flashing needed.
    You have a failed blower motor control module.
    Sits on top of the A/C plenum in the engine bay.

  4. #3
    Coachman is offline Cadillac Owners Member
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    Thread Starter

    Re: Flash Procedure

    Thanks Harry but I failed to mention that the blower comes on when the key is off. It does it at odd times during the night. Is that still the problem?

  5. #4
    Harry Yarnell is offline Cadillac Owners Connoisseur
    Automobile(s): 2001 eldorado,2008 DTS,2005 XLR, '96 eldo,'95 eldo,' 89 eldo,'78 eldo,'11CTS-V
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    Re: Flash Procedure

    yup. usually the failure is permanent, not intermittent.

  6. #5
    Coachman is offline Cadillac Owners Member
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    Thread Starter

    Re: Flash Procedure

    Thanks Harry, I'll give it a shot.

  7. #6
    sefiro's Avatar
    sefiro is online now Cadillac Owners Enthusiast
    Automobile(s): 92 Fleetwood 2dr cpe - FWD, 96 Seville SLS, 02 Seville
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    Re: Flash Procedure

    Yep, failed control module. Had same issue with 92 Fleetwood.

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