Be careful not to use too much pressure if you're going to blow some air through the drain holes. Not sure about the rear but the front ones will come undone under the headliner with the use of too much pressure as they are not clamped

 

Check out this thread. Airborne227 has a great illustration too.
https://www.hummerforums.com/forum/h...urprise-24259/

 

Thanks to you guys that have tried to help. I only have a fairly basic tire compressor and I did give it a try, but I was not able to get a good seal with the plastic nozzle (I don't have a rubber nozzle). Tomorrow I will try a trick I found in one of the threads posted above, which said to create a crude seal by wrapping plastic around the tire compressor needle. If that doesn't work, I will buy a can of compressed air to try, some people have had that work. If that doesn't work, I'm out of DIY ideas unless anyone has a trick I haven't read about yet.

Mark

 

I think you should get some sleep.... if it is NOT leaking in your H3 and causing damage... then it can wait until your dealer agreed to look at it....

I know that is a tall order.... and I know I am a hypocrite for saying to drink a beer and wait until after your vacation....

(there is no way I could do that)

but I think it's best at this point.....


Agree?

 

Muddy, I did let it go for last night and got some sleep. But, this morning I got a can of compressed air and I alternated doing that and feeding bicycle brake cable wire down the front drains (the cable is firmer than weedeater line, but soft enough that it gives and wouldn't dislodge the drain connection). Anyways, the passenger side drain flows pretty well now and the driver's side drain flows 50-75% as well as the passenger side one. I will now leave it alone and hope that works well enough in the rain, but will still keep my appointment with the dealer to see if they can do a better fix.

Mark

 

cool... and your dealer should appreciate the fact that you helped make their job a little easier...