FCCC XBP 2016–2021 — technical service bulletin

Bulletin 21TS-01 · NHTSA communication 10185931 · issued Jan 25, 2021

Technical service bulletin

communication type

Engine and Engine Cooling

component

2016–2021

model years

vehicle entries

Official summary

Technical Service Letter for Detroit Bearing Failures - Standard Diagnostic Times. DTNA is increasing repair strategies for determining the root cause of Detroit DD heavy duty lower end bearing failures. To support this strategy change, Detroit now has two (2) Standard Diagnostic Times (SDTs), easy and difficult, which can be applied to repair orders.

Vehicles covered

2016 FCCC XBP
2018 FCCC XBP
2016 Freightliner 114SD
2017 Freightliner 114SD
2018 Freightliner 114SD
2019 Freightliner 114SD
2016 Freightliner 122SD
2017 Freightliner 122SD
2018 Freightliner 122SD
2019 Freightliner 122SD
2021 Freightliner 122SD
2016 Freightliner Argosy
2017 Freightliner Argosy
2018 Freightliner Argosy
2019 Freightliner Argosy
2016 Freightliner Business Class M2
2017 Freightliner Business Class M2
2018 Freightliner Business Class M2
2019 Freightliner Business Class M2
2016 Freightliner Cascadia
2017 Freightliner Cascadia
2018 Freightliner Cascadia
2019 Freightliner Cascadia
2021 Freightliner Cascadia
2016 Freightliner Columbia
2017 Freightliner Columbia
2018 Freightliner Columbia
2019 Freightliner Columbia
2016 Western Star 4700
2017 Western Star 4700
2018 Western Star 4700
2019 Western Star 4700
2016 Western Star 4900
2017 Western Star 4900
2018 Western Star 4900
2019 Western Star 4900
2021 Western Star 4900
2021 Western Star 49X
2016 Western Star 5700
2017 Western Star 5700
2018 Western Star 5700
2019 Western Star 5700
2021 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.