Sunroof rear drain tubing exit
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Sunroof rear drain tubing exit in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I have read alot about clearing the sunroof drain holes. Alot of people including myself had a hard time finding ...
  1. #1
    krusty_tc is online now Cadillac Owners Member
    Automobile(s): 2003 CTS Luxury Sport
    Join Date
    Apr 2013
    Age
    49
    Posts
    50

    Sunroof rear drain tubing exit

    I have read alot about clearing the sunroof drain holes. Alot of people including myself had a hard time finding the distal (exit) end of the rear drain hose. What I have read was to find it in the rear fender well. Just so people know, you have to remove the inner plastic fender well to see it. The problem with mine was the hose was not pushed through the grommet enough to allow the water to drain (this was mentioned by another forum member). If it is not pushed through the grommet enough, the gromment causes a closed end to your tube so water will back up. You must pull back the inner trunk formed carpet sides to be able to push the hose further through the grommet. Sorry I didn't take pics.

    Dave

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  3. #2
    Firewalker is offline Cadillac Owners Fanatic
    Automobile(s): 2006 CTS 3.6l
    Join Date
    Jan 2012
    Location
    Beavercreek, Ohio
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    141

    Re: Sunroof rear drain tubing exit

    Just as Dave said! I had a musty car smell after getting it back from a collision repair. I looked everywhere but couldn't find anything wet. I pulled the rear trunk apart and found the entire spare tire wheel well full! I drilled a hole in the bottom, dried it out and went to work on the trunk carpet. Having dealt with wet padding from a basement, I know that it is really hard, almost impossible to get the smell of an old leak out of it. I simply tore the jute padding off of the carpet back. Other than perhaps some insulation value (sound) it serves no purpose. The carpet dried easily without the padding and the hole drained the leak. The culprit was just as he described. They (dealership) had failed to push the sun roof drain hose fully into the fender grommet, allowing it to back up into the trunk every time it rained.

    The problem is fixed, thanks to this forum and a little searching!

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