Chevrolet Silverado 2500 2020–2021 — technical service bulletin
Bulletin 22-NA-201 · NHTSA communication 10225608 · issued Oct 17, 2022
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
8
vehicle entries
Official summary
This technical bulletin provides repair information to correct a customer concern of MIL L5P ECM/TCM Update with DTCs Set.
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.