Chevrolet Blazer EV 2025 — technical service bulletin
Bulletin 661.20 · NHTSA communication 11033769 · issued Jun 2, 2026
Technical service bulletin
communication type
Unknown / Other
component
2025
model years
1
vehicle entries
Official summary
• Fixes to help ensure successful vehicle software updates.
Vehicles covered
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.