How to remove black trim from roof seams to verify proper sealing.

[Mike 67]

Recently picked up a '19 Bighorn with just under 4k miles. Going over everything I found evidence of a water leak above the rear window. Also looks like there is a small stain on the headliner. I sealed the 3rd brake light and replaced the plastic washers on those screws with rubber washers.
I would also like to check under the black trim over the roof seams. Anyone remove them?
Thanks

 

[Whiskey_tango]

Have you seen this thread?
https://5thgenrams.com/community/threads/rear-window-surround-crack.8961/

 

[SD Rebel]

It's still covered under the bumper to bumper warranty. Sounds you are like me, a DIY person who rather do it himself, but I would have the dealer inspect it in case it's a much more expensive or involved issue.

 

[Mike 67]

Have you seen this thread?
https://5thgenrams.com/community/threads/rear-window-surround-crack.8961/

Thanks Whiskey_tango. I did see that thread. Mine isn't cracked though. Must be the mold lines that others mentioned.

 

[Mike 67]

Removed the 3rd brake light and found what looks like a dried rusty drip. Hoping that is where the water came in. I applied some dielectric grease around the gasket and also replaced the plastic washers for rubber ones under the 4 screws that hold the light assy on.
While the light was off I used a small shop mirror to check the shark fin antenna for any signs of leakage and or looseness. Looked perfect to me.
Hoping there's no more issues.