Sun roof drains

[Jack_M]

So I am working in Columbus Indiana, and it has been raining a lot here lately. The other day I noticed my remote not working unless I was two feet from the body control computer figured it was the batteries and swapped them out still not go. Then I noticed the floor was soaked and I mean swamped!! I took the kick panel off and every thing was soaked! I read up on the sunroof drains and decided to investigate. came to find out my passenger side tube came off at the sunroof and poured down the headliner to the Body control computer hopefully it dries out and I don't need to replace it but it did toast the blower motor resister or at least it decided to blow at the same time. Anyways I would like to thank everyone on here for posting what they have over the years. I would not have found the issue if it were not for this site! Thank you everyone!!

 

[Happy Hummer]

Yes, it is a shame that GM didn't put a bit more thought into the placement of the BCM. And yes this site is indispensable.

 

[H3TDave]

Had mine clog up shortly after I bought mine. Took it back to the dealer and water doctors blew them out. Started looking up other people's stories and realized it's gonna be some thing to keep an eye on when it pours.

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[HillaryNoRelationHummer]

I'm having the extreme leaking on my driver side floor right now... For temporary purposes I've been parking on a hill when it rains in my driveway. No issues with anything not working... Just the lake at my feet! Think it might be the same issue?

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[H3TDave]

It's not a good time to open the sunroof but if u open it and look inside and see if its pooling up and running down the A pillar. BEWARE if it is u will get a lap full of water.

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[HillaryNoRelationHummer]

It's not a good time to open the sunroof but if u open it and look inside and see if its pooling up and running down the A pillar. BEWARE if it is u will get a lap full of water.

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Good to know LOL... I've opened it up a few times this past week and no pooling up of water fortunately. Maybe a hose issue?

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[Happy Hummer]

I've actually seen the boot, gromet for hose pull out of bulk head fire wall. But I'd make certain my drains were open. There is a really good video online.

 

[HillaryNoRelationHummer]

I've actually seen the boot, gromet for hose pull out of bulk head fire wall. But I'd make certain my drains were open. There is a really good video online.

Awesome. Thanks for the suggestions. I'll check out the video. [emoji4]

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[alrock]

Glad the forum could help. The irony is that I've cleaned out the drains and eliminated those dirt trapping fingers in the end, and yet I've still got a DS blockage. Argh.

 

[Ordieh]

With every oil change, pour CLEAN SHOWER in the tray. This will keep the drams flowing. It may seem crazy, but even clogged drains will open and start to flow if the tray is filled with the liquid. My H3 buddies and I have had 100% success doing this.

 

[Ordieh]

Sorry about misspelled DRAINS.......in my previous reply.

 

[4speedfunk]

I used the weed eater line and cut the "x"'s out of the grommets. No issues since.

The carpet pad takes forever to dry.


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[Jack_M]

Yeah I saw your post on it! Actually that Idea with the weed eater line was what lead me to believe there was an issue at the sunroof. When I stuck the weed eater line in I could only get it to go about six inches in and then it would stop. Once I got it reconnected and ran the line through from the fire wall side it went through OK. Since I had it apart that far I cut the 'X"s out of the grommet to make sure!! I will do the drivers side when I get home actually your post on the subject really helped me a LOT!!! It is nice to be able to pour a sixteen ounce bottle of water down the drain and see the ground get wet not my carpet and my body control computer. Hopefully when it dries out all the way the remote will unlock the doors from more that two feet from the body control computer. I am trying to find out if there is an antenna lead for that so I can try and get it dried up but after looking over the wiring diagrams a few times I don't see a reference to it.

 

[CaddyStrophic]

I've had terrible sunroof drain issues, so I drilled out one sides grommet. (Will do the other side when i have time.)

But, I drilled it and still had leaks, majorly! I had to drop the headliner and I found out that the hose had disconnected from the drain hole up top at the sunroof. I put it back and cranked a ziptie on it to try and keep it in place, but I need to get back up in there and glue it or put a hose clamp on it.

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[HillaryNoRelationHummer]

Use silicone. That's what I used on the one of mine and it's held up got awhile now.

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[Happy Hummer]

They sell line clamps which would work beautifully​. Like the kind used at lawn mower gas tank and carb connections.