Freightliner Cascadia 2020–2026 — technical service bulletin
Bulletin TSB-26-055-FTL · NHTSA communication 11028073 · issued Jan 26, 2026
Technical service bulletin
communication type
Power Train
component
2020–2026
model years
7
vehicle entries
Official summary
Revised 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.