3rd brake light gasket replacement

[LakesAZ]

That’s good to hear, thanks for the update!

 

[Chrisburgess72]

Yup. That’s what I used. I applied it over the factory seal. Just tighten all four screws gently and u should be fine.

So you did not remove the “foam” seal? And where where you leaking before applying the marine seal? I’m leaking at the top corner. Please let me know.

 

[Chrisburgess72]

Same here, scraped off the old foam gasket then used Goo Gone to clean it up. Like others have said it takes some time but its worth doing it right.

Where were you getting your leak before changed the gasket?

 

[Aseras]

Just get a roll of butyl tape and forget it ever leaking forever. Remove the light, throw away the gaskets and lay a strip around the perimeter. put the light fixture back on and tighten it down until it just smooshes all around. Use a plastic putty knife and cut the excess by pressing. not like cutting a steak, do not drag.

https://www.amazon.com/Dicor-BT-1834-1-Butyl-Seal-Tape/dp/B001FCB4JS

 

[2022GraniteCrystalCummins]

Has anyone taken pictures of the brake light, I just bought a 2022 and it seems pretty secure and sealed to me. It has probably been redesigned.

 

[Aseras]

Gasket is new and much better and you have metal clips for the screws. Mine are plastic. My gasket was a sad single layer of flat foam crap.

 

[JayBee2019]

Just buy a roll of Butyl Tape. throw the gaskets away.

That’s what I did! No leaks since!

 

[TTFD753]

Just get a roll of butyl tape and forget it ever leaking forever. Remove the light, throw away the gaskets and lay a strip around the perimeter. put the light fixture back on and tighten it down until it just smooshes all around. Use a plastic putty knife and cut the excess by pressing. not like cutting a steak, do not drag.

https://www.amazon.com/Dicor-BT-1834-1-Butyl-Seal-Tape/dp/B001FCB4JS

Butyl tape for the win!
I found some on Amazon with 3/8 thickness and width. Fit into the channel perfect. Product link: Amazon.com: Butyl Sealant Tape,PROMOTOR Sealants Butyl Rubber Tape for Installing Car Part,Windows,Doors and Windshield etc, : Industrial & Scientific

I didnt have any leaks but it was amazing how spongy and saturated the original gasket was with water. Replaced the halogens with LasFit LEDs. Scraped the old gasket off with a screwdriver. Took all of 20 minutes to remove, scrape, replace lights, add butyl, and reinsert.

 

[wallyuwl]

Has anyone taken pictures of the brake light, I just bought a 2022 and it seems pretty secure and sealed to me. It has probably been redesigned.

Is that gasket spongy like it would absorb water? Looks like it only goes around the top of the housing?

 

[mikeru82]

Has anyone taken pictures of the brake light, I just bought a 2022 and it seems pretty secure and sealed to me. It has probably been redesigned.

Looks like they added a secondary gasket which runs over the top half of the main gasket. Wonder when they did that? I don't want to remove the CHMSL on my '21 to see if has that second gasket too. It's not leaking now, and I'm concerned that if might start leaking if I "break the factory seal".

 

[Jako]

Looks like they added a secondary gasket which runs over the top half of the main gasket. Wonder when they did that? I don't want to remove the CHMSL on my '21 to see if has that second gasket too. It's not leaking now, and I'm concerned that if might start leaking if I "break the factory seal".

I purchased the "new" version on April 2, 2021. I believe that I was an early adopter. Best I can do as far as time line.

 

[Igneousigloo]

I replaced the very thin, water-laden factory seal with the weather stripping from Lowe's/Home Depot. Worked like a charm! Thanks to those of you who paved the way!

 

[2022GraniteCrystalCummins]

Is that gasket spongy like it would absorb water? Looks like it only goes around the top of the housing?

The upper seal is soft and spongy but looks to be water tight on the sides like a closed cell foam

 

[Ollie2023]

Just get a roll of butyl tape and forget it ever leaking forever. Remove the light, throw away the gaskets and lay a strip around the perimeter. put the light fixture back on and tighten it down until it just smooshes all around. Use a plastic putty knife and cut the excess by pressing. not like cutting a steak, do not drag.

https://www.amazon.com/Dicor-BT-1834-1-Butyl-Seal-Tape/dp/B001FCB4JS

I’m about to try this. It sounds like the seam doesn’t cause a problem, I’m going to put the seam where the two ends meet at the bottom. Your using the putty knife to cut it to length so the seam has a clean cut I assume?

 

[6of36]

I’m about to try this. It sounds like the seam doesn’t cause a problem, I’m going to put the seam where the two ends meet at the bottom. Your using the putty knife to cut it to length so the seam has a clean cut I assume?

What year is your truck? The gasket was redesigned, and the ones that weren't now have an extended warranty. This is an old thread, from people with the old design. You may have the new design, but if not it's a covered repair.

 

[Ollie2023]

What year is your truck? The gasket was redesigned, and the ones that weren't now have an extended warranty. This is an old thread, from people with the old design. You may have the new design, but if not it's a covered repair.

2019 so pretty sure I don’t have the new design. Thanks for the info I will call the dealership. Been dry for months in Texas and then we got 5” in 2 days. A little bit of water coming down near the sliding window.

 

[Ollie2023]

What year is your truck? The gasket was redesigned, and the ones that weren't now have an extended warranty. This is an old thread, from people with the old design. You may have the new design, but if not it's a covered repa

What year is your truck? The gasket was redesigned, and the ones that weren't now have an extended warranty. This is an old thread, from people with the old design. You may have the new design, but if not it's a covered repair.

I did some research and everything I found did from truck owners did say there is a warranty but a lot of them mention in Canada. I’ll try and track it down on Mopars site. Either way I will call them.

 

[HSKR R/T]

I did some research and everything I found did from truck owners did say there is a warranty but a lot of them mention in Canada. I’ll try and track it down on Mopars site. Either way I will call them.

Stelantis issues a TSB with extended warranty for 19-20 Rams on the third brake light and rear window for water leaks. Your dealer should be able to look it up. There is a whole thread on here specifically about the extended warranty.

 

[HSKR R/T]

I did some research and everything I found did from truck owners did say there is a warranty but a lot of them mention in Canada. I’ll try and track it down on Mopars site. Either way I will call them.

https://5thgenrams.com/community/threads/backlite-back-glass-extended-warranty.53544/

 

[Slutzk]

2 days of rain. No leaks so far.

been a few years, how its holding up?