Chevrolet Bolt EV 2019–2020 — technical service bulletin
Bulletin 20NA119 · NHTSA communication 10191203 · issued Mar 31, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
2
vehicle entries
Official summary
This service bulletin provides information on Radio Software Version 34.9.2 and 46.1.6 update to correct software issues.
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.