I have a 2023 Sierra SLT that I just found out has the sealed tail lights. Surprised they would change the design but not fix the issue considering it is definitely something GM knows about. They WILL NOT do anything about it unless they get inundated with complaints (or somebody run somebody over backing up). I called customer service and opened a case. I recommend that everybody who has this issue do the same. Even folks that can change theirs easily enough, it's still not something you should have to do on a newer vehicle. My '81 380SL has brighter reverse lights than this truck does. When you call to complain, remind them that their liability cost is going to be a hell of a lot worse when somebody backs up over a kid. It is a safety issue.