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"sealing the wire harness and it's entry point into the door panel" Seal with what? And is this the wrapped bundle of wires that you see between the door and the door frame of the driver's side door? Thanks
yes I've been scratching my head on this reply for years, of course my problem is back now even when it snows the engine must get hot and melt the snow and then cause those droplets to hit the GEM module and connections still curious what you used to seal it off. Was it that E 6000 electrical clearcoat spray? Did you just use black flexseal spray? Rubberized black rubber undercoating spray? I do see inside the door frame jam but it doesn't seem like water should come in there it's got the rubber boot and what not but you are not specific where are you sealed it off at. I was wondering maybe water comes in that way that we just can't see like through the A pillar I've heard even a small rusted spot around the roof and the top of the window can be enough for a even minute amount of water to drip down. It seems to happen faster if you're driving. so dangerous not to have proper lights in a storm, and so embarrassing when you walk away from the vehicle with the keys off it tries to start up. Sometimes even tries to start when it started that sound is horrible there goes the starter and hopefully not flywheel damage. I also believe that a lot of the windshield guys don't want to replace the windshield it's huge and heavy. I had Safelite come to the house and they wouldn't touch it just by looking at it and trying to tell me there's a leak already. They must have already known the guy was old and senior. I don't even believe he brought the windshield he couldn't wait to get off the property lol. I wonder if just zip tying a bag around the fuse box and gem module in the back would help? Then there's those other keyless entry modules and alarm system modules up on the back Fire wall gotta make sure they don't get wet either. Well for now I just drive it when it's not nasty weather
There could be a leak on the windshield and they just won't care or say there is
Originally Posted by mike190
my problem as well. wet GEM module. (2002 f150)
windshield guy says no need to replace orig windshield.
water appears left side wall under dash. eventually dries out and then things are fine... go figure
I know it is a common problem but have never seen a final solution in forums.
I don't think they can see if there's a leak or not until they pull the window. basically they don't want to do the job. That's my belief. Spraying the entire firewall underneath the windshield wiper cowl grill doesn't do anything. It's got to be through the holes the wires go through, the water must be following the wires
my 1998 f150 done same kinda thing it was gem but its not the windshield you will probably find your problem if you open hood and the plastic that catches windshield water run off is loose instead of water running onto it and down the side it is slightly raised and the waster running down windshield is actually running under black plastic it has sticky foam under it the foam can rot away and the water will run right down the firewall and right to your wire harness plugs right into the fuse box and gem hope this helps
I totally agree with this possibility. So more than one thing can be happening a leaky windshield or the windshield wiper vent cowl. I wonder if car stereo dynamat material would work ? Or where do you get that kind of automotive sticky foam that's that size and is it cut to fit? Suggestions?
OK Final solution. (you tube: alfredo's auto glass) The water (on my 02 Lightning), enters at the top of w/shield molding, goes over the headliner and then to the pillar and goes down towards the floor and onto the GEM module. Alfredo fixed mine. The area behind the top w/shield molding becomes rotted and the ensuing holes allow the water to enter. He sealed the holes, coated the areas and reapplied the molding.
No problem 1 year later.
OK Final solution. (you tube: alfredo's auto glass) The water (on my 02 Lightning), enters at the top of w/shield molding, goes over the headliner and then to the pillar and goes down towards the floor and onto the GEM module. Alfredo fixed mine. The area behind the top w/shield molding becomes rotted and the ensuing holes allow the water to enter. He sealed the holes, coated the areas and reapplied the molding.
No problem 1 year later.
wow! Thank you thank you. I know what I have to do now. Getting pummeled by six more inches of snow it's Super Bowl Sunday 2025. For now to keep the battery from dying I'll just pull that GEM fuse#20 right?. I'm sure I'll lose all the computer engine data I believe. But it's better than buying batteries.
You may not have to go that far (pull battery). When my windshield was leaking, it was the AC blower and overhead console staying on. Turn both off. Voila! Your experience may vary.
Jan 26, 2015, 06:42 PM
