03 SLS excessive water leak from a/c
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 03 SLS excessive water leak from a/c in Past Cadillac Vehicle Discussion; At the end of last summer with the ac on i noticed water dripping from passenger side kick panel then ...
  1. #1
    stilltippin is offline Cadillac Owners Member
    Automobile(s): 2003 seville sls
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    03 SLS excessive water leak from a/c

    At the end of last summer with the ac on i noticed water dripping from passenger side kick panel then in the fall the sdm fried cause all the water from the ac leaked under the pass seat i checked the drain hole on fire wall wasn't clogged replaced sdm but its now winter here in Minnesota anything ideas what to look for before next spring that may have caused problem

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 03 SLS excessive water leak from a/c

    You need to get under the dash and see exactly where the water is dripping from. Sounds like maybe a crack in the HVAC housing of some sort. Water should flow to the drain tube.

  4. #3
    stilltippin is offline Cadillac Owners Member
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    Re: 03 SLS excessive water leak from a/c

    It was coming from behind the blower motor i think but also it sounded like there was water swishing around in the blower motor unfortunately i can't run the a/c cause its about 8 degrees in Minnesota right now where do you think it would crack at inside the area where the drAin tube goes out by the evaporatOr connection in the car?

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
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    Re: 03 SLS excessive water leak from a/c

    If you can hear water sloshing around in the HVAC stack when the A/C is running in humid weather and the drain fitting is dripping slowly, there's a clog in there. The HVAC will condense a rather impressive amount of water under some conditions (cool, humid days) - get the car up on a hoist and clean out the fitting using a large fuzzy pipe cleaner from a hobby/craft shop.

    If you hear water sloshing, it stands to reason that the bottom of the drain pan is not cracked --- but if the drain is restricted it will overflow and cause your observed damage.

  6. #5
    stilltippin is offline Cadillac Owners Member
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    Re: 03 SLS excessive water leak from a/c

    I had to replace the SDM when this issue happened is the anything that needs to be done as far as re learning any computer modules

  7. #6
    ThumperPup's Avatar
    ThumperPup is offline Cadillac Owners Master
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    Re: 03 SLS excessive water leak from a/c

    I have to replace my SDM it was due to the Drain plug being clogged
    the Insurance company paid for the damage done from it being clogged

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