Brightdrop Zevo 400 2022–2026 — technical service bulletin
Bulletin PIT6404 · NHTSA communication 11019983 · issued Jun 30, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2022–2026
model years
43
vehicle entries
Official summary
This Preliminary Information communicates the DTC's setting in the SDGM are false, steps to resolve and not to replace the module.
Vehicles covered
- 2024 Brightdrop Zevo 400
- 2023 Brightdrop Zevo 600
- 2024 Brightdrop Zevo 600
- 2024 Buick Envision
- 2025 Buick Envision
- 2025 Cadillac Celestiq
- 2025 Cadillac Escalade
- 2025 Cadillac Escalade Esv
- 2025 Cadillac Escalade IQ
- 2024 Cadillac Lyriq
- 2025 Cadillac Lyriq
- 2025 Cadillac Optiq
- 2026 Cadillac Vistiq
- 2024 Cadillac XT4
- 2025 Cadillac XT4
- 2024 Cadillac XT5
- 2025 Cadillac XT5
- 2025 Chevrolet Blazer EV
- 2025 Chevrolet Brightdrop 600
- 2023 Chevrolet Colorado
- 2024 Chevrolet Colorado
- 2025 Chevrolet Colorado
- 2024 Chevrolet Corvette
- 2025 Chevrolet Equinox
- 2026 Chevrolet Equinox
- 2024 Chevrolet Equinox EV
- 2025 Chevrolet Equinox EV
- 2024 Chevrolet Silverado EV
- 2025 Chevrolet Silverado EV
- 2026 Chevrolet Silverado EV
- 2025 Chevrolet Suburban 1500
- 2025 Chevrolet Tahoe
- 2023 GMC Canyon
- 2024 GMC Canyon
- 2025 GMC Canyon
- 2022 GMC Hummer EV Pickup
- 2024 GMC Sierra EV
- 2025 GMC Sierra EV
- 2026 GMC Sierra EV
- 2025 GMC Terrain
- 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.