[Nebula1701]

As of today around 62% of Bolt battery packs from 2017 to 2019 Model year vehicles have been replaced.

62% Of 2017 To 2019 Chevrolet Bolts Have Had Their Battery Replaced

The information comes from an NHTSA document that shows replacement rates among newer Bolts are far lower, though.

insideevs.com

 

[Nebula1701]

Q3 Update.

https://static.nhtsa.gov/odi/rcl/2021/RCLQRT-21V560-1925.PDF Model year 2017-19 76% complete
https://static.nhtsa.gov/odi/rcl/2021/RCLQRT-21V650-5368.PDF Model year 2020+ 11% complete

 

[Nebula1701]

Q4 Update:

https://static.nhtsa.gov/odi/rcl/2021/RCLQRT-21V560-9638.PDF (81% of 2017 - 2019 Bolts Completed)
https://static.nhtsa.gov/odi/rcl/2021/RCLQRT-21V650-9798.PDF (28% of 2020 - 2022 completed)