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M1009 leaks when raining.

helobravo

Member
Steel Soldiers Supporter
66
1
8
Location
south east louisiana
Just picked up the truck today and noticed a leak coming from under the dash, along the right kick panel when it rained.
What gasket would need replacement?
 

CARNAC

The Envelope Please.
Supporting Vendor
8,281
646
113
Location
Corpus Christi, TX
Is there rust in the wheel well area. Also, are you sure it is rainwater? That area could also be the heater hose and/or core.
 

edpdx

Active member
794
75
28
Location
Oregon
The windshield gasket is probably bad and you might have rust.
+1 on the nuts diagnosis. If there is a leak in the windshield gasket, it will most likely be rotting the window frame (rust). Rain will get in and present itself as it drips from inside the front pillar. Get in there with a headlamp and look for water residue. The real giveaway is if there is a crack in the window at the edge on the side where it leaks. The weakening frame no longer supports the glass in that spot and it will eventually crack.

To check, the damage it is an easy task to pull the rubbery locking bead from the center of the windshield gasket. HOT TIP before you do: take a sharpie that will not be absorbed by the rubber and mark every 6 inches across the rope and the gasket, and also where the ends began and end. When you put it back in the marks will help you replace it without stretching it or running out before you reseat the bead.

CARNAC says it could be heater core related- yes, on that one too. Also check to see if anyone (the PO) has installed lights or antennas and left holes open on the roof. :(

Either way stop the rain from getting in NOW! Check under the floor mats to see how long this has been a problem. Air/tear it out if the pad is soaked. Treat it with your choice of sealant and lay new pads in. Don't let the leak get away from you.
 

cucvrus

Well-known member
11,465
10,398
113
Location
Jonestown Pennsylvania
My resolution is to find the leak fix it and have the entire inside Line X ed. It is worth the money and ends the worries about a wet floor. And then annually just go under the vehicle and spot repair, clean and spot recoat the underside. Have a nice day. And this is only my resolution. It may differ from yours. But it works and makes a lot less work and worry. It cleans out with a hose or a dust brush after use. A hose with heavy off roading and dust brush with normal use. Have a nice day.
 
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