Chevrolet Corvette 2020–2025 — technical service bulletin
Bulletin 21-NA-192 · NHTSA communication 11010416 · issued Oct 2, 2024
Technical service bulletin
communication type
Structure
component
2020–2025
model years
6
vehicle entries
Official summary
This service bulletin provides repair information to correct a customer concern of Top Not Secure DIC Message, DTC B19E4 SYM64 May be Stored in History in Convertibles.
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.