Chevrolet Blazer EV 2025 — technical service bulletin
Bulletin 652.20 · NHTSA communication 11024671 · issued Oct 27, 2025
Technical service bulletin
communication type
Unknown / Other
component
2025
model years
1
vehicle entries
Official summary
This software update includes the following, if your vehicle is equipped: •Improves Super Cruise and parking assist behavior •Reduces false alerts and feature interruptions •Fixes to help ensure accurate braking when a vehicle is detected. •Fixes to address erroneous braking. •Improvements to vehicle acceleration response in heavy traffic. •Improvements to braking responsiveness. 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.