Freightliner 122SD 2008–2021 — technical service bulletin
Bulletin 20TS-09 · NHTSA communication 10183733 · issued Dec 6, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2008–2021
model years
59
vehicle entries
Official summary
Technical Service Letter for SPN 3711 FMI 31 on GHG17 DD15 Trucks.
Vehicles covered
- 2014 Freightliner 122SD
- 2015 Freightliner 122SD
- 2016 Freightliner 122SD
- 2017 Freightliner 122SD
- 2018 Freightliner 122SD
- 2019 Freightliner 122SD
- 2020 Freightliner 122SD
- 2021 Freightliner 122SD
- 2008 Freightliner Cascadia
- 2009 Freightliner Cascadia
- 2010 Freightliner Cascadia
- 2011 Freightliner Cascadia
- 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
- 2009 Freightliner Century
- 2010 Freightliner Century
- 2009 Freightliner Columbia
- 2010 Freightliner Columbia
- 2011 Freightliner Columbia
- 2010 Freightliner Coronado
- 2011 Freightliner Coronado
- 2012 Freightliner Coronado
- 2013 Freightliner Coronado
- 2008 Sterling 9500
- 2009 Sterling 9500
- 2010 Sterling 9500
- 2008 Sterling LT9500
- 2009 Western Star 4900
- 2010 Western Star 4900
- 2011 Western Star 4900
- 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
- 2021 Western Star 49X
- 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
- 2011 Western Star 6900
- 2012 Western Star 6900
- 2015 Western Star 6900
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.