Water leaking into cab....couple possibilities

[Igorsgonemadd]

Ok so I just got my truck back from the paint shop and I'm getting it put back together. I went out sunday and monday and got my dash together, put all my sound deadner down and installed my front carpet. It has been raining all day today, so I go out tonight after the rain to work on the carpet a little more and its wet by the kicks and the doors. So first off, I know my stupid roof lights are leaking cause I could stick my fingers in the sun visor hole and feel moisture. They are screwed right into the roof, there are no clips, and the screws dont really catch like they are suppose to. Also there are no washers under the screw heads. So thats leaking for sure. So are those suppose to have the clips the sandwich the metal that the screw threads in to? I might just see if I can get a body shop to shave them, I dont like the way they look anyway.
The second thing I'm wondering is, since I dont have any door panels in the truck right now, could rain have gotten in the truck through the doors. Do the door panels act as a moisture barrier. I would think while it was sitting still rain would just go straight through the door, I dont see how it could be diverted to flow inside the truck and and yes my drain holes in the door are all clear. Any help would be greatly appreciated. Thanks!!

[kody]

mine did the same thing.the windshield gasket was leaking,hope this helps.

[Igorsgonemadd]

Well, it never leaked before paint though. But I'll check this evening, I'm gonna have my wife hit it with a hose while I am inside.
Posted via Mobile Device

[old Rusty C10]

most times its the windshield gasket.. a lot of times the vents themselves leak due to junk that gets into the cowl

[dieseldawg142]

had water leaking in mine, turned out the factory sealer on the heater box under the hood rotted out

[kody]

i was replacing my dash pad when i found mine,it had rained hard the nite before,i had to end up replacing carpet also.

[rs72z]

If you can stick your finger through the sunvisor hole and feel moisture i would say it's coming from the cab lights.

I thought there was jclips or maybe plastic inserts that went into the roof where the screws thread in.


You might need to use a skim coat of clear silicone on the bottom of the lights also to stop the leak.

I have a parts truck with cab lights that i could take one off of and check if need be.

[zook]

did the body shop remove your cab lights? as in earlier post some silicone could be your fix. you did say however the screws were not fitting correct? tight screws and silicone could be your fix. good luck on the hunt for h2o comin in.

[mrolds88]

Originally Posted by rs72z

If you can stick your finger through the sunvisor hole and feel moisture i would say it's coming from the cab lights.

I thought there was jclips or maybe plastic inserts that went into the roof where the screws thread in.


You might need to use a skim coat of clear silicone on the bottom of the lights also to stop the leak.

I have a parts truck with cab lights that i could take one off of and check if need be.

My cab lights are the problem on my crew cab. My solution is to drill out the holes in there and install rivnuts. Then replace the hardware with stainless machine screws. I used some socket head stainless cap screws. No worries about stripping them out. I think they are 6-32 thread.

[Telecasterjoey]

Water was leaking into mine through the kick panel vents, because I didn't put the hood hinge gaskets on. Put them on fixed the problem.....
Posted via Mobile Device

[burb1085]

I just had a windsheild replaced on my Suburban and it is wet in the exact same spot (the carpet by the door and kick panel). They said my gasket was still good. Apparently not. When you had it painted was the windshield removed?

[homemade87]

Don't forget about the door gaskets. When the water drains from the top of the door down the front of the seal it will leak into the floor as well. Has rotted many floors out. Lucky I found mine before it was too late.

[Greenlee]

I have had two trucks that leaked under the cowl on the seam under where the wiper linkage is. This causes the seam on the firewall under the hood to rust.
Posted via Mobile Device

[kikkegek]

Originally Posted by Greenlee

I have had two trucks that leaked under the cowl on the seam under where the wiper linkage is. This causes the seam on the firewall under the hood to rust.
Posted via Mobile Device

I think I am having the same problem. Do you have any pics of that seem? or can you point me out where it is?

I have a waterleak at the left (driverside) bottom of my front window.

At first I thought it was at the #1 spot. I then put some silicone into the square hole, thinking I had solved it. But water keep coming down under de dash...just a very small stream , but enough to get the hole floor wet over night.

I then opened up my dashboard, removed the vent channel and looked up with a light and saw water seeping in through a seam that is under #2.

Is that the seam you are talking about? Can I reseal that from the outside?

[Greenlee]

Take off the windshield wipers and remove the metal cowl. Under the cowl there is a plastic cover that snaps in. Remove the plastic cover. Under the wiper linkage there is a seam with seam sealer from the factory that is most likely cracked and deteriorating. Clean it up best you can and take care of any rust. Coat it with new seam sealer. Don't use silicone; use automotive seam sealer. I don't have any pictures handy. Hope this helps.

[kikkegek]

Originally Posted by kikkegek

I think I am having the same problem. Do you have any pics of that seem? or can you point me out where it is?

I have a waterleak at the left (driverside) bottom of my front window.

At first I thought it was at the #1 spot. I then put some silicone into the square hole, thinking I had solved it. But water keep coming down under de dash...just a very small stream , but enough to get the hole floor wet over night.

I then opened up my dashboard, removed the vent channel and looked up with a light and saw water seeping in through a seam that is under #2.

Is that the seam you are talking about? Can I reseal that from the outside?

here is the photo I should have posted with this message



I have a 74 GMC Suburban and the cowl is in the hood with these model .I took of the plastic mesh and checked the area around the wiper linkage. It is rusted, but dry, while it was pooring rain outside...



photo from driver to passenger side:


photo from passenger to driver side:


So I dont think its coming in through here? Or am I looking in the wrong place?

[motornut]

Originally Posted by homemade87

Don't forget about the door gaskets. When the water drains from the top of the door down the front of the seal it will leak into the floor as well. Has rotted many floors out. Lucky I found mine before it was too late.

I've had leaks from top of door when on a slope sideways...
but also a small one at the top of winshield

[Palf70Step]

Mine leaks because of the doors not being aligned right yet. The top is not snug against the seals yet. Besides windshield, I would say the door alignment/seals is the next big issue on a freshly painted truck.

[Igorsgonemadd]

Thanks rs72z, that would be awesome. I'm the one that removed the cab lights and I just can't remember about the clips. The front and rear glass were not removed. All the side glass was as well as the vent windows removed and new seals put in them, which leads me to a discovery last night. Me and the wife went out last night and I got in the truck while she poured water over different areas and the the new bent window seals are leaking pretty good on the passenger side. It was like 30 degrees outside, so we just checked that side. I'm going to turn the hose on it tonight and see what else I get to leak. I'm pretty sure that the cab lights are leaking to. Thanks for all the help guys, I'll keep updated on what I figure out.
Posted via Mobile Device

[Sterling]

Well you did have it painted
Most good body shops remove the windshield before paint
And most use their windshield "caulk" to seal the thing back on, instead of a factory like gasket

If you can, pull your dash pad off, its really only a few screws around the bottom, and a few for the dash bezel. It slips right off. Check by the bottom of the windshield for water.

When they were peeling off the old weatherstripping, they could've opened up a few rust holes, or just rusty spots. Either way, they did a bad job of sealing it from what it sounds like.

Prep is key for a seal. You can get a windshield suction cup for a few bucks at Advance Auto, and the gasket is sold from LMC and other suppliers.

I know Macco really screwed up the gasket on my friends cavalier. It looks like a big splatter around the whole rim of the windshield

[Your41Plague12]

My truck is leaking water as well. This is a freshly painted cab that I am putting back together. There is water running from somewhere down the firewall and down the crease on the driver's side of the transmission hump. My truck does have clearance lights, but they were sealed with a heavy amount of silicone. I also sealed the seam in the cowl above the wiper linkage with clear silicone. There are no visible holes in the firewall. Is there something stupid that I am missing, or anything else I should check? Or should I suck it up and buy a windshield gasket? My windshield WAS removed before paint, and reinstalled after. I do not recall puncturing the gasket. My old cab was completely rotted out everywhere, including the floors, so I do not know if the gasket was even good to begin with.

[motornut]

I was looking at the truck to see the window leak
couldn't see it but did see the seam sealer coming out top of the A pillar
wondered if it could wick in there
or how bad is your firewall,that you don't see

[Your41Plague12]

My old cab looks just like that. It has miscellaneous rotted holes everywhere, including the big ones where the screws went through for the fender-to-cab insulation. I will not be installing that on my new cab, I'll live with the noise.

[kikkegek]

found this on another forum. there are weep holes that can cause leaks if they are not open.

check this out. they are on the bottom edges on both sides of the windshield

[motornut]

how about here?AC cab