Anyone else have this problem

[JE25]

I have a 19 bighorn and when I got ready for work this afternoon I noticed that the headliner in the back had water stains on it. It rained about an inch in my area last night.
Has anyone had any problems with something leaking towards the back of the cab?

 

[grimreefer]

Rear window surround crack.​

Get ready for a long read...

 

[ElkoNV]

Welcome to the forum! Sorry, you got the dreaded leak, there is another thread here as well:

Rear window leak (Not the center high mounted light)

I have a 2019 Laramie with 25K and have noticed water leaking into the cab near the top corner of the back window on the passenger side. A search of the forums lead me to look at the center high mounted light. I eliminated that as the cause when I was able to take a squirt bottle and spray...

5thgenrams.com

 

[mikeru82]

Could also be the 3rd brake light leaking. Have you recently removed the 3rd brake light?

 

[SD Rebel]

Based on the photo, I don't see any cracks, likely a 3rd brake light leak. Easy to fix with better seal you can buy at home depot.

 

[JE25]

Thank y’all for the info. No I haven’t done anything to the 3rd brake light. I noticed some very small water stains the last time it rained but honestly never gave it much thought. Today was a different story!
Do y’all think I could use some silicone around the light cover?

 

[SD Rebel]

Thank y’all for the info. No I haven’t done anything to the 3rd brake light. I noticed some very small water stains the last time it rained but honestly never gave it much thought. Today was a different story!
Do y’all think I could use some silicone around the light cover?

The oem seal is puny, gets smaller and harder as rubber does over time which leads to the leak. This is a common leak on many trucks. Remove the lens and you can see what kind of seal you need, then go to Home Depot and buy some, preferably slightly thicker. Get the seal that already has a single side of adhesive tape, which you will trim for fit and install on the 3rd brake light.

If you add sealant, make sure to add it to just on the seal where it makes contact with the body. I wouldn't try to "seal in" the light itself, just the rubber seal.

Here is a good vid on how to do it, it's on the previous gen, but similar:

 

[JE25]

The oem seal is puny, gets smaller and harder as rubber does over time which leads to the leak. This is a common leak on many trucks. Remove the lens and you can see what kind of seal you need, then go to Home Depot and buy some, preferably slightly thicker. Get the seal that already has a single side of adhesive tape, which you will trim for fit and install on the 3rd brake light.

If you add sealant, make sure to add it to just on the seal where it makes contact with the body. I wouldn't try to "seal in" the light itself, just the rubber seal.

Here is a good vid on how to do it, it's on the previous gen, but similar:

Awesome, thanks again, I appreciate it

 

[Ramman_666]

Just had same issue. We have a full 90 page thread in it call dealer ASAP get fixed. 3rd break light and see if you have any cracks in the sides of the plastic top window frame next to the center window.

 

[c3k]

Call the dealer.