Freightliner Cascadia 2017–2020 — technical service bulletin
Bulletin SB35-034 · NHTSA communication 10165415 · issued Sep 27, 2019
Technical service bulletin
communication type
Power Train
component
2017–2020
model years
4
vehicle entries
Official summary
Service Bulletin for Hub Oil Level in Final Drive (NFD) Top Performance Axles on Decked Vehicles
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.