2012 Tundra rear window leaking

I know this has came up before. Just joined to see if I could get some feedback.
I have a 2012 Tundra TRD Road Warrior with 157,000 miles! Best truck I’ve ever owned. Started noticing a small water leak last winter and just started to notice it’s became much worse. I went to all the pain of pulling that damn third break light and replacing the gasket. Still leaking! So then I sealed up well with clear silicone chalk... still leaking! I have an appointment to have my entire rear window replaced tomorrow morning. It’s the only place I can think it must be leaking. I have the small manual sliding rear window and I’m guessing there’s an issue with the seal. What a bummer. Anyone else had the rear window replaced to solve the problem? I just replaced all the lower window seal rubbers on all 4 windows as the rubber was starting to fall apart. Easy install and looks like new. Thinking maybe the rubber is bad around that rear window also? Happy New Year all!

 

Same thing happening with me. I sealed up my 3rd brake light which helped but still getting a leak from somewhere, can only assume its the upper rear window seal. Did you get yours replaced and did it help? Other odd thing I noticed was after I sealed the 3rd brake light my cab started fogging up a lot more than before siliconed it.