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How to Discover Leaks in the Cadillac CTS Sunroof

Model: Cadillac Cts MK 3 - Years: 2014, 2015, 2016, 2017, 2018, 2019

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Video tutorial

Let's see how the issue of the leaking sunroof in the Cadillac CTS, which wets the car's carpet, is not a problem, but simply a clogged nipple that prevents water from passing through the drain tube, causing it to leak into the carpet instead of draining into the fender.

With a simple test, pouring water from the roof into a bottle that responded in the carpet, he discovered that the problem was all in that small dirty piece, which couldn't allow all the water to pass through the drain.

He had to remove the door pillar, but it was certainly worth it. In forums, this problem was reported with repair costs exceeding one thousand dollars.


Updated on 29 July 2026 by ScegliAuto


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by ScegliAuto

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