Chevrolet Silverado EV 2024–2025 — technical service bulletin
Bulletin 661.40 · NHTSA communication 11031823 · issued Apr 28, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
4
vehicle entries
Official summary
• Fixes to help ensure successful vehicle software updates • Fixes to help protect battery life • Improvements to provide more accurate speed limit detection on the driver’s display • Improvements to the availability of driver assistance features and fewer notifications or warnings • Fixes to help ensure driver assistance features remain functional when the windshield freezes
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.