Freightliner Cascadia 2017–2020 — technical service bulletin
Bulletin SB32-040 · NHTSA communication 10168039 · issued Nov 19, 2019
Technical service bulletin
communication type
Suspension
component
2017–2020
model years
4
vehicle entries
Official summary
Service Bulletin for troubleshooting Airliner suspension air-spring bag misalignment. This version updates applicability to New Cascadia.
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.