Freightliner Cascadia 2012–2022 — technical service bulletin
Bulletin ICI22-017 · NHTSA communication 10210548 · issued Apr 13, 2022
Technical service bulletin
communication type
Power Train
component
2012–2022
model years
35
vehicle entries
Official summary
Important Campaign Information Letter for DDC D21M1 Termination Date Extended. This letter is to inform you that a revised bulletin for Detroit Diesel Field Service Campaign D21M1, DT12 Transmission Drive Shaft Cover Plug Reseal has been EXTENDED for an additional three months. Please use the extended termination date for all work under D21M1 from this point forward. REVISION: D21M1 termination date extended to July 1, 2022.
Vehicles covered
- 2012 Freightliner Cascadia
- 2013 Freightliner Cascadia
- 2014 Freightliner Cascadia
- 2015 Freightliner Cascadia
- 2016 Freightliner Cascadia
- 2017 Freightliner Cascadia
- 2018 Freightliner Cascadia
- 2019 Freightliner Cascadia
- 2020 Freightliner Cascadia
- 2021 Freightliner Cascadia
- 2022 Freightliner Cascadia
- 2012 Western Star 4900
- 2013 Western Star 4900
- 2014 Western Star 4900
- 2015 Western Star 4900
- 2016 Western Star 4900
- 2017 Western Star 4900
- 2018 Western Star 4900
- 2019 Western Star 4900
- 2020 Western Star 4900
- 2021 Western Star 4900
- 2022 Western Star 4900
- 2021 Western Star 49X
- 2022 Western Star 49X
- 2012 Western Star 5700
- 2013 Western Star 5700
- 2014 Western Star 5700
- 2015 Western Star 5700
- 2016 Western Star 5700
- 2017 Western Star 5700
- 2018 Western Star 5700
- 2019 Western Star 5700
- 2020 Western Star 5700
- 2021 Western Star 5700
- 2022 Western Star 5700
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.