Freightliner Cascadia 2020–2025 — technical service bulletin
Bulletin TSB-26-057-FTL · NHTSA communication 11033103 · issued May 8, 2026
Technical service bulletin
communication type
Power Train
component
2020–2025
model years
6
vehicle entries
Official summary
Revised Technical Service Bulletin for DT12 OVX Transmission Refresh
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.