Freightliner Cascadia 2017–2022 — technical service bulletin
Bulletin SB26-054 · NHTSA communication 10209463 · issued Mar 28, 2022
Technical service bulletin
communication type
Power Train
component
2017–2022
model years
6
vehicle entries
Official summary
Revised Freightliner Service Bulletin for DT12 Transmission Control Harness Chafing the Transmission Control Module
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.