Cobalt Sunroof Drain Tubes - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 1 (permalink) Old 05-26-2017, 06:43 PM Thread Starter
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Cobalt Sunroof Drain Tubes

**Just realized I should have posted this in the Problems section - Sorry! **

A few years ago I cleaned out what I thought were the only drain tubes for the sunroof of my daughter's 2005 Cobalt (front ones). However, the other day she complained about a musty smell. I did some checking and found the battery compartment and surrounding areas of the trunk with about 1"-2" of standing water. I realized there were two more tubes that ran down from the back of the sunroof into the trunk area. I got them cleaned out just fine. I went to check on the front ones and found standing water in the channel of the floorboard immediately under plastic floor panel that sits directly below the door when shut (passenger side). I vacuumed it dry and ran water into the drain hole only to find water once again filling up that channel. I traced the drain tube from the sunroof, across the edge of the ceiling, down the window post (where I lost site of it behind the dash) and found it under the dash going into a quarter-sized hole in the metal next to where a passenger's right foot would be near. The tube apparently wasn't attached to anything and I was able to very easily pull it out of that hole. I suspect it was connected to a tube behind that metal, but there's no way to see and I can't find where there might be a hole under the vehicle. Numerous searches on the Internet tell me zip about where that tube should be draining out. I can't imagine it just drains into that trough/channel because there's a wire bundle there (it was underwater when I pulled the kick panel off and pulled the carpet back).

Sorry for all the rambling, but I felt details would help. So...HELP! Where does that stupid tube connect to?? Right now my only solutions are to either plug that drain hole up and let the three remaining tubes carry the load, or add about 12" of tube to the end of the existing tube and drill a hole of its own.

Last edited by ric6420; 05-26-2017 at 06:55 PM. Reason: Posted in wrong spot!
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