I had a '08 Cadillac CTS, and now have a '13. Both leak water into the car after heavy rains. I have learned it is because the sunroof drain lines get clogged. Both my husband and I have had other cars of other makes with sunroofs and never had this problem. Is this endemic only to Cadillac's?


Asked by Feb 11, 2016 at 05:22 PM about the 2013 Cadillac CTS 3.0L

Question type: Maintenance & Repair

6 Answers


No this happens on a lot of cars. Pretty common.


Sorry that you're having problems. We had a 2006 CTS and now have a 2011 CTS and a 2012 CTS-V and haven't had any issues and all three have sun/moon roofs. Our 2006 Mustang GT will leak at the cabin filter area if it's not kept clean.


This can happen with any vehicle that has a sunroof. The problem occurs when the vehicle is parked under a tree or somewhere that allows debris to enter around the roof and clog the drains. The solution is to locate the drains opening with the sunroof open, then you should locate the drain discharge, typically around the front of the front door opening. Then use compressed air to blow out the debris, using rotating finger pressure on discharge hose to allow the debris to exit. If that doesn't work, then you must take it to the dealer to have them remove the panels and clear the debris.

Richard Karlsson

Unfortunately it is a weep hole drain that tends to clog, you need to get an air tool that can blow the drain clear


If the air doesn't work what I used on my 03 CTS was heavy weedeater line just pushed it through the holes got all the debris out no more wet interior.


All good answers...

Your Answer

Add photo

Related Questions


Looking for a Used CTS in your area?

CarGurus has 13,039 nationwide CTS listings starting at $1,000.


Search Cadillac CTS Questions

Cadillac CTS Experts

#1 Gaetano Viesti
Gaetano Viesti
Reputation 940
#2 Brandon Foster
Brandon Foster
Reputation 840
#3 RushIII
Reputation 660
View All

Related Models For Sale

Used Cadillac CTS-V"
10 Great Deals out of 487 listings starting at $8,900
Used Cadillac ATS"
301 Great Deals out of 8,849 listings starting at $10,995
Used Cadillac CTS Coupe"
71 Great Deals out of 1,228 listings starting at $13,900
Used Cadillac SRX"
657 Great Deals out of 10,180 listings starting at $1,995
Used Chrysler 300"
565 Great Deals out of 21,106 listings starting at $1,490
Used Cadillac XTS"
263 Great Deals out of 7,209 listings starting at $10,995
Used Dodge Charger"
647 Great Deals out of 30,067 listings starting at $1,995
Used Cadillac Escalade"
376 Great Deals out of 11,252 listings starting at $2,999
Used Chevrolet Camaro"
796 Great Deals out of 38,874 listings starting at $2,650
Used BMW 3 Series"
1,621 Great Deals out of 39,575 listings starting at $888
Used Ford Mustang"
720 Great Deals out of 41,405 listings starting at $900
Used BMW 5 Series"
673 Great Deals out of 18,878 listings starting at $1,500
Used Chevrolet Impala"
932 Great Deals out of 35,806 listings starting at $700

Used Cars For Sale

2017 Cadillac CTS For Sale
1,770 listings starting at $45,410
2016 Cadillac CTS For Sale
30 Great Deals out of 2,631 listings starting at $31,200
2015 Cadillac CTS For Sale
38 Great Deals out of 877 listings starting at $21,000
2014 Cadillac CTS For Sale
35 Great Deals out of 867 listings starting at $19,599
2013 Cadillac CTS For Sale
83 Great Deals out of 1,036 listings starting at $10,995