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Labor Day Putting down your wrenches or time for
MORE wrenching? 
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2011 Posts: 118 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 118 | install new rubber and glass in back window of my 48 gmc,it is raining and is leaking around bottom of rubber, pretty much the whole bottom... | | | | | Joined: Apr 2008 Posts: 899 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 899 | Could be leaking under the top of seal and then traveling down and coming out on the bottom. Recommend going to you local auto glass shop and have them seal it. I have used an asphalt sealer in a caulking gun with success in the past. Rainfall here is light, not like Glens Falls, so you may be best served letting the pros do it.
Ed
| | | | | Joined: Oct 2011 Posts: 118 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2011 Posts: 118 | that is what I was thinking, I will get some silicone and try it myself first, doesn't work, I will leave it up to the pros...thanks forty9 for info... | | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | 696969 Be careful what sealer you use,especially if you plan any paintwork around that area in the future,I would try and avoid silicon based sealers. Your best bet is to find a butyl based compound it's non setting and non aggressive (it wont hurt your paint) I'm not sure if it's available your side of the pond but I use a product called Arbomast ,it's designed specifically for the problems you describe. Failing that,talk to your local auto glass shop,they might be able to suggest a suitable alternative.
Last edited by jockbolter50; 05/20/2013 6:02 PM.
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Jun 2009 Posts: 1,596 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 1,596 | Get some urethane from a glass shop to seal it. | | | | | Joined: Feb 2011 Posts: 1,362 'Bolter | | 'Bolter Joined: Feb 2011 Posts: 1,362 | the urethane is for more modern stuff. I'd go with the buytl type or similar. For the rear window I'd pull the lock strip out,(if its the same as TF) and then use a plastic type tool to pull or pry the seal up some to inject the sealer behind it. If its fairly new paint maybe some tape around the whole area where your prying etc.
The so called experts aren't always so expert, so watch out if its something you care about and don't want ruined some how.
I have a brother with a good story about having the experts work on his car.
Kicking self for selling off my Taskforce trucks.
Still looking for an LCF or conventional big bolt in decent shape.
As of 10-26-2022, A 55.2 Taskforce long bed now the work begins
| | | | | Joined: Sep 2010 Posts: 698 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 698 | X2
you need to get the sealant UNDER the rubber not just along the edges or it will leak later and start rusting in there.
My Fleet: 19411953195919651966 1953 Willy's Pickup John Vegetarian- old Indian word for bad hunter
| | | | | Joined: Jun 2009 Posts: 1,596 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 1,596 | I'm not sure why it matters that urethane is for newer stuff? Assuming you're putting in a new rubber anyways, it will probably seal much better and it's made specifically for sealing metal to rubber to glass connections. | | | | | Joined: Sep 2010 Posts: 698 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 698 | I'm not sure why it matters that urethane is for newer stuff? urethanes set hard and the butyls set soft. If you use a urethane it will be a bear to replace in the future.
My Fleet: 19411953195919651966 1953 Willy's Pickup John Vegetarian- old Indian word for bad hunter
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