Freightliner Cascadia 2017–2023 — technical service bulletin
Bulletin SB54-356 · NHTSA communication 10216933 · issued Jul 1, 2022
Technical service bulletin
communication type
Visibility
component
2017–2023
model years
7
vehicle entries
Official summary
Revised Freightliner Service Bulletin for HVAC Software Updates. Description of Revisions: This bulletin replaces the version dated 06/21/2022. Formatting errors have been corrected.
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.