after reading this tread I decided to clean the roof for the first time this year. I don't have an air compressor so I went to staples and bought a can of compressed air that you would use to clean your PC, you know the ones with the straw. I first cleaned all the dirt/debris out of the entire opening with a few cleaning wipes, you would be surprised how much **** is really in there. Then I hit the front drain openings with the can. Seemed to work as there was no back spray coming out, just noticed some frost while shooting. Then poured some water in both sides of the sunroof drains and to my relief it poured out from behind both front wheels. Now I couldn't get to the rear holes, but figuring the truck sits kinda forward that most water would run to the front anyways.

 

Blow your drains out using a drinking straw. It may take several good blows, but that's how I cleared mine today.

 

Just curious, has anyone ever tried using liquid drain cleaners to unclog the sunroof drain tubes. Mine are clogged about 2-3 feet in and alread tried compressed air and wire inserted. Now wondering if the drain cleaner would pose any kind of risk to the hose itself.

 

Try the compressed air or wire from the grommet end in the firewall. You can detach it from under the dash for easier access. This may dislodge the obstruction. Remove the X-shaped flaps from the grommet while you have it out to keep it from clogging in the future.

Liquid drain cleaner is extremely caustic. I'd avoid that idea.

 

This issue took all the enjoyment out of owning this truck for me. I got tired of sucking up to a gallon or more of water out of the carpets along with that nasty odor that wet carpet produces. I was able to get 15K for the truck at a Chevy Dealership. I'm done! It just shouldn't be that hard. Those drains are a legitimate DESIGN FLAW. I figure I needed to be driving a grown man's car anyway, so I replaced it with a Mercedes S-Class.

 

Do a search on here on how to remove the drain plugs. I did it and it only took a hour or so. Just went through a hurricane here and no leaks....Well wroth it!!

 

Sorry to hear a leak drove you to bail on the H3. It's a simple half hour job to remove the flaw in the factory grommets which would have eliminated all of the problems you had with the leaks and resulting cleanup.

As far as your 'grown man's car' comment....sounds like sour grapes. A 'grown man' would have fixed the problem from the get-go rather than let it ruin his vehicle and experience.

 

LOL !!!! true true..... Just wait til that "grown mans car" needs simple service and its issues come around..... He thinks the GM dealer was bad...

 

Where are you located

 

I don't have my truck anymore, but here's what I did. Remember that with compressed air you run the risk of compacting the debris even more by forcing it in the same direction it has settled in the tube. I used my ShopVac, and attached a regular McDonalds type drinking straw to the end of the hole with duct tape. The straw fits into the hole pretty good, and the suction was very concentrated. I could hear the trash coming up through it. Granted, the way those drains are made this will become a routine process. I just hated that I didn't know they were clogged until I'd have a gallon of water in my carpet. Sometimes blowing the debris through the tube the same way it went in just makes the clog worse.