Brightdrop Zevo 600 2021–2025 — technical service bulletin
Bulletin PIT6369A · NHTSA communication 11018429 · issued May 6, 2025
Technical service bulletin
communication type
Unknown / Other
component
2021–2025
model years
52
vehicle entries
Official summary
This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
Vehicles covered
- 2024 Brightdrop Zevo 600
- 2021 Buick Envision
- 2022 Buick Envision
- 2023 Buick Envision
- 2021 Cadillac CT4
- 2022 Cadillac CT4
- 2023 Cadillac CT4
- 2024 Cadillac CT4
- 2021 Cadillac CT5
- 2022 Cadillac CT5
- 2023 Cadillac CT5
- 2024 Cadillac CT5
- 2021 Cadillac Escalade
- 2022 Cadillac Escalade
- 2023 Cadillac Escalade
- 2024 Cadillac Escalade
- 2021 Cadillac Escalade Esv
- 2022 Cadillac Escalade Esv
- 2023 Cadillac Escalade Esv
- 2024 Cadillac Escalade Esv
- 2023 Chevrolet Corvette
- 2024 Chevrolet Corvette
- 2025 Chevrolet Corvette
- 2022 Chevrolet Silverado 1500
- 2023 Chevrolet Silverado 1500
- 2022 Chevrolet Silverado 2500
- 2023 Chevrolet Silverado 2500
- 2022 Chevrolet Silverado 3500
- 2023 Chevrolet Silverado 3500
- 2022 Chevrolet Suburban
- 2023 Chevrolet Suburban
- 2024 Chevrolet Suburban
- 2022 Chevrolet Tahoe
- 2023 Chevrolet Tahoe
- 2024 Chevrolet Tahoe
- 2025 Chevrolet Tahoe
- 2022 GMC Hummer EV Pickup
- 2023 GMC Hummer EV Pickup
- 2024 GMC Hummer EV Pickup
- 2025 GMC Hummer EV Pickup
- 2022 GMC Sierra 1500
- 2023 GMC Sierra 1500
- 2022 GMC Sierra 2500
- 2023 GMC Sierra 2500
- 2022 GMC Sierra 3500
- 2023 GMC Sierra 3500
- 2022 GMC Yukon
- 2023 GMC Yukon
- 2024 GMC Yukon
- 2022 GMC Yukon XL
- 2023 GMC Yukon XL
- 2024 GMC Yukon XL
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.