Brightdrop 600 Elcv 2023–2027 — technical service bulletin
Bulletin PIC6540K · NHTSA communication 11038132 · issued Sep 28, 2026
Technical service bulletin
communication type
Unknown / Other
component
2023–2027
model years
60
vehicle entries
Official summary
This Preliminary information communicates to dealers a procedure to reset the radio.
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
- 2027 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
- 2027 Buick Encore GX
- 2023 Buick Envision
- 2024 Buick Envision
- 2025 Buick Envision
- 2026 Buick Envision
- 2024 Buick Envista
- 2025 Buick Envista
- 2026 Buick Envista
- 2024 Cadillac Celestiq
- 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
- 2027 Cadillac Escalade IQ
- 2026 Cadillac Escalade Iql
- 2027 Cadillac Escalade Iql
- 2023 Cadillac Lyriq
- 2024 Cadillac Lyriq
- 2025 Cadillac Lyriq
- 2026 Cadillac Lyriq
- 2027 Cadillac Lyriq
- 2025 Cadillac Optiq
- 2026 Cadillac Optiq
- 2027 Cadillac Optiq
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.