Freightliner Cascadia 2020 — technical service bulletin
Bulletin SF594 · NHTSA communication 10171560 · issued Feb 19, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
1
vehicle entries
Official summary
Field Service Campaign for Cascadia Fuel Water Separator Dash Wiring. On certain vehicles, the fuel water separator harness was not installed at the factory.
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.