Rear Window Leak and GM warranty warning

[Danny Vee]

I have a 2021, with only 31K miles and I have a leak. Date of purchase was April of 21 so I'm 4 month past the warranty date. This truck is still basically new and because it is four month past the warranty date they won't even look at it, but when I told them what the issue was they were well aware of the problem. Just said I had to go to a window shop. Com'on Chevy, you can do better then that.

[Z714Mike]

Agreed. I have a 2020 and had the same issue last year.  Chevy said a faulty silicone job at the factory but would not take responsibility.

SOL I guess. Good luck. 

[mrjulian416]

My 2021 developed the leak at around 40k miles.

 

I ended up sealing it on my own using butyl rope on the fasteners and some 3m 08367 black urethane seam sealer in the channel, following the DIY thread on here.  The job wasn't as bad I expected it to be, taking my time with dropping the rear half of the headliner and releasing the clips on the spoiler... didn't break anything.

 

Took my time cleaning the channel with soapy water, denatured alcohol, compressed air.

 

Two months and 2k miles later (and plenty of rain) so far so good.  I guess if it starts leaking again I'll go with a fixed window.

 

Hard to believe they haven't solved this problem.

[PESandoval]

I have a 2020 GMC Sierra SLT Crew cab its out of warranty and the back window is leaking on both sides of the window