Freightliner Cascadia 2020–2025 — technical service bulletin
Bulletin TSB26-055-FTL · NHTSA communication 11014780 · issued Feb 4, 2025
Technical service bulletin
communication type
Power Train
component
2020–2025
model years
6
vehicle entries
Official summary
Technical Service Bulletin for DT12 Excessive Wear
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.