Brightdrop 600 Elcv 2023–2026 — technical service bulletin
Bulletin PIT6457 · NHTSA communication 11026062 · issued Nov 25, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2023–2026
model years
60
vehicle entries
Official summary
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
Vehicles covered
- 2023 Brightdrop 600 Elcv
- 2024 Brightdrop 600 Elcv
- 2024 Brightdrop Zevo 400
- 2023 Brightdrop Zevo 600
- 2024 Brightdrop Zevo 600
- 2023 Buick Enclave
- 2024 Buick Enclave
- 2025 Buick Enclave
- 2026 Buick Enclave
- 2023 Buick Encore
- 2024 Buick Encore
- 2025 Buick Encore
- 2026 Buick Encore
- 2023 Buick Encore GX
- 2024 Buick Encore GX
- 2025 Buick Encore GX
- 2026 Buick Encore GX
- 2023 Buick Envision
- 2024 Buick Envision
- 2025 Buick Envision
- 2026 Buick Envision
- 2024 Buick Envista
- 2025 Buick Envista
- 2026 Buick Envista
- 2025 Cadillac Celestiq
- 2026 Cadillac Celestiq
- 2023 Cadillac CT4
- 2024 Cadillac CT4
- 2025 Cadillac CT4
- 2026 Cadillac CT4
- 2023 Cadillac CT5
- 2024 Cadillac CT5
- 2025 Cadillac CT5
- 2026 Cadillac CT5
- 2023 Cadillac Escalade
- 2024 Cadillac Escalade
- 2025 Cadillac Escalade
- 2026 Cadillac Escalade
- 2023 Cadillac Escalade Esv
- 2024 Cadillac Escalade Esv
- 2025 Cadillac Escalade Esv
- 2026 Cadillac Escalade Esv
- 2026 Cadillac Escalade Esv IQ
- 2026 Cadillac Escalade Esv Iql
- 2025 Cadillac Escalade IQ
- 2026 Cadillac Escalade IQ
- 2026 Cadillac Escalade Iql
- 2023 Cadillac Lyriq
- 2024 Cadillac Lyriq
- 2025 Cadillac Lyriq
- 2026 Cadillac Lyriq
- 2025 Cadillac Optiq
- 2026 Cadillac Optiq
- 2026 Cadillac Vistiq
- 2023 Cadillac XT4
- 2024 Cadillac XT4
- 2025 Cadillac XT4
- 2026 Cadillac XT4
- 2023 Cadillac XT5
- 2024 Cadillac XT5
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.