Freightliner Cascadia 2017–2023 — technical service bulletin
Bulletin SB54-356 · NHTSA communication 10214904 · issued Jun 20, 2022
Technical service bulletin
communication type
Visibility
component
2017–2023
model years
7
vehicle entries
Official summary
Freightliner Service Bulletin for HVAC Software Updates
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.