Chevrolet Silverado EV 2024–2025 — technical service bulletin
Bulletin 652.20 · NHTSA communication 11022224 · issued Aug 5, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
4
vehicle entries
Official summary
This software update includes the following, if your vehicle is equipped: • Improvements to vehicle diagnostics • Fixes to preserve battery life and improve charging • Fixes to address issues with shifting • Fixes for vehicle airflow in icy conditions • Improvements to HVAC compressor performance During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
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.