Freightliner Cascadia 2017–2021 — technical service bulletin
Bulletin CALFTL-OILHUB · NHTSA communication 10179074 · issued Aug 27, 2020
Technical service bulletin
communication type
Steering
component
2017–2021
model years
5
vehicle entries
Official summary
Customer Advisory Letter for Visual Inspection For Oil Presence In Hub. Visual Inspection is necessary for the condition of the oil level in the steer axle hubs.
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.