Freightliner Cascadia 2020 — technical service bulletin
Bulletin TechTalk566473K · NHTSA communication 10191862 · issued Apr 23, 2021
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
2020
model years
1
vehicle entries
Official summary
Tech Talk discussion on DT12 Countershaft Brake Learn Dynamic Values.
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.