Chevrolet Silverado EV 2024 — technical service bulletin
Bulletin 662.20 · NHTSA communication 11035384 · issued Jul 8, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2024
model years
2
vehicle entries
Official summary
• Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system • This update contains a required software change to help improve the overall software update and diagnostics process
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.