Brightdrop Zevo 400 2023–2026 — technical service bulletin
Bulletin PIT6215B · NHTSA communication 11018430 · issued May 6, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2023–2026
model years
29
vehicle entries
Official summary
This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.
Vehicles covered
- 2024 Brightdrop Zevo 400
- 2023 Brightdrop Zevo 600
- 2024 Brightdrop Zevo 600
- 2025 Cadillac Escalade
- 2025 Cadillac Escalade IQ
- 2023 Cadillac Lyriq
- 2024 Cadillac Lyriq
- 2025 Cadillac Lyriq
- 2025 Cadillac Optiq
- 2026 Cadillac Vistiq
- 2024 Cadillac XT4
- 2024 Chevrolet Blazer EV
- 2023 Chevrolet Colorado
- 2026 Chevrolet Equinox
- 2024 Chevrolet Equinox EV
- 2025 Chevrolet Equinox EV
- 2024 Chevrolet Silverado EV
- 2025 Chevrolet Silverado EV
- 2025 Chevrolet Suburban 1500
- 2025 Chevrolet Tahoe
- 2023 GMC Canyon
- 2023 GMC Hummer EV Pickup
- 2024 GMC Hummer EV Pickup
- 2025 GMC Hummer EV Pickup
- 2024 GMC Sierra EV
- 2025 GMC Sierra EV
- 2026 GMC Terrain
- 2025 GMC Yukon
- 2025 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.