Chevrolet Volt 2016–2019 — technical service bulletin
Bulletin 21-NA-204 · NHTSA communication 10245198 · issued Oct 16, 2023
Technical service bulletin
communication type
Power Train
component
2016–2019
model years
4
vehicle entries
Official summary
This service bulletin provides Diagnostic Aid information for Speed Limited Message or Reduced Propulsion Power Message With no DTCs.
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.