TL;DR
- Google has kicked off a new Extended Repair Program for the Pixel 9 Pro and 9 Pro XL.
- The program covers a limited number of Pixel 9 Pro and Pro XL devices with vertical lines on the display or a screen flickering problem.
- Google is offering free display replacements for these phones for up to three years from the original retail purchase date.



There’s the support page. But, information is sparse and the display must flicker or have a vertical line from bottom to top. A line in any other direction can mean it may not be honored. Plus, liquid damage or any other physical damage.
https://support.google.com/pixelphone/answer/16737524