Sun roof drains/leak Please Read

[PbSandman]

I have read tons and tons of threads about these trucks leaking and didn't really find the answer that I needed. If there are ANY suggestions or pointers I'd appreciate them.
Fortunately I have pin pointed the leak to a few areas.
1. Right rear drivers door seal - just replace it I assume
2. Sun roof drainage system. - totally confused

My question is for the sunroof drains. I pulled my headliner down and can see clearly that it isn't draining properly. I blew out the tubes as hard as I could with my lungs to start with. They seem to have a little dirt in them but not much.
I appears to be backing up and overflowing out of the housing assembly when it rains hard and especially when I put a hose to it to test the leak.

My driveway is slightly inclined so it looks as if it overflows quickly because of the angle and then poors out the lowest point on the drain....which ends up running down my headliner and forming a pool behind the seat.

What can be done here? Any ways to increase the draining?
Should I just park on a flat surface which seems rediculous.

Are there other drains to check and clear because I'd hate to have to seal off my sunroof completely to stop the drainage.

Any thoughts and opinions would be much appreciated here.

[Taquache]

the sun roof drains down the a pillars, take it to the dealer and they will clean it out :thumbsup

[PbSandman]

The sun roof actually drains out in 4 different places on a Mega cab. 2 in the front and 2 in the rear. When you pull the headliner down you can see them clear as day, basically 1 on each corner of the cab

I also thought to possibly put larger drain tubes on for the rear... bad idea?
It seems so easy to fab up some larger drain tubes, this way if it backs up it will have more area inside to fill itself. What do yal think?

BTW: The dealer isn't going to do crap beside take an air hose to it. I'd rather do it myself for free and know its being fixed correctly. I'm not the type to go running to the dealership when faced with a problem like this, unless its major mechanical.

[Taquache]

oh, well I'd say go for it and build bigger drain tubes. The dealer cleaned mine out for free, infact I was 1200 miles from where I bought the truck. I havent personally pulled my headliner so I dont know what it looks like under there but if you can fab up and fit bigger drains go for it Also the lift, if it leveled the truck may oppose gravitational drain of the sunroof since the truck is engineered with a rake

[PbSandman]

That's kind of what I was thinking. It seems stupid to "have" to have it on a level surface but I thought it might help...? Since it isn't overflowing elsewhere and where it is draining is the lowest point to leak from, seems logical. It's F**kin bull to have to do this on such an expensive truck like this but I guess I'll fab up some larger drain tubes.
From a lot of reading, I've found that this is one of the few of their flaws...

If anybody else is having the problem, I'd suggest making some larger drains as well.

Any other opinions or suggestions?

[Taquache]

I agree on it being bull. I havent had any problems with mine since getting it cleaned out almost a year ago and the truck has never been inside a garage since then. I have found that in drive through carwashes, the brushless kind, the water pressure and ammount sometimes over loads the system and it leaks a little, but if I keep the cover open it dosent affect anything. Mine also used to leak at the grab handle bolt holes but since the cleaning no problems The dealer may have replaced some drains for bigger ones. i dont really remember

[king nothing]

Originally Posted by Taquache

the sun roof drains down the a pillars, take it to the dealer and they will clean it out :thumbsup

Would this explain why I occasionally have water dripping from the bolt holes for the handles in my A-Pillar?

[Taquache]

exactly, mine did the same thing

[king nothing]

Originally Posted by Taquache

exactly, mine did the same thing

Thanks. After I posted I saw that you had answered the question already

[PbSandman]

I think mine would be dripping from the same place but I park on an uphill slope so it just runs back and down behind my seat.

I did do a thorough analysis on this drainage system and after looking at it, it is obvious to why it backs up....

After water flows into the drainage path the first point to drain is a tiny hole, maybe 1/4 in. in diameter, then it opens up to about a 1/2 in. rubber adapter fitting that connects another small... maybe 1/4 in. tube to drain. It's no wonder it backs up so quickly... its a bottle neck system.

So I am in the process of making that first hole that is 1/4 in... into a slightly larger hole atleast 3/8 maybe larger to elminate some cloggage into a straight 1/2 tube that will run aaaallll the waaaay out the rear of the cab causing no backing up of any kind.

Cross my fingers that this does the trick!

In theory.... it should.

[turborep]

Originally Posted by PbSandman

I think mine would be dripping from the same place but I park on an uphill slope so it just runs back and down behind my seat.

I did do a thorough analysis on this drainage system and after looking at it, it is obvious to why it backs up....

After water flows into the drainage path the first point to drain is a tiny hole, maybe 1/4 in. in diameter, then it opens up to about a 1/2 in. rubber adapter fitting that connects another small... maybe 1/4 in. tube to drain. It's no wonder it backs up so quickly... its a bottle neck system.

So I am in the process of making that first hole that is 1/4 in... into a slightly larger hole atleast 3/8 maybe larger to elminate some cloggage into a straight 1/2 tube that will run aaaallll the waaaay out the rear of the cab causing no backing up of any kind.

Cross my fingers that this does the trick!

In theory.... it should.

Where are you talking about? Right by the sunroof? I haven't pulled my headliner yet to investigate but mine leaks at the right front of the headliner and it runs down the A-pillar cover, leaking from the bolt hole, and down to the right floor area. Started all of a sudden at 60K. Is it hard to pull the headliner?

[PbSandman]

Mine was actually overflowing in the right passenger rear portion of the sunroof. Each corner of the sunroof has a drain tube. The drainage system is very poorly made with small drain holes. I assumed mine was partially clogged, and when the rain would poor it would overflow and come out the headliner behind the seat.

Yours front tubes could be clogged which would cause it to overflow.

Do you have clearance lights? If so that would be the first area I would check for leakage. Those lights don't seal that well to the roof and leak all of the time.

Take them off, apply a bead of silicone underneath and in the bolt holes, then re apply them.
The headliner is pretty simple to remove, just time consuming. I'd reseal your clearance lights first if you have them.