Freightliner Cascadia 2013–2021 — technical service bulletin
Bulletin SB26-051 · NHTSA communication 10178943 · issued Aug 14, 2020
Technical service bulletin
communication type
Power Train
component
2013–2021
model years
9
vehicle entries
Official summary
Updated Service Bulletin for DT12 Transmission Cooler Retrofit. This bulletin replaces the version dated 09/18/2019. The part number for the oil control valve has been updated in the parts table.
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.