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Service bulletin 20CSA-01

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10170855
Published by NHTSA2020-02-01
Manufacturer's number20CSA-01
Manufacturer's date2020-01-31
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING

NHTSA's summary

Customer Service Announcement for a policy change regarding Detroit Service Information Bulletins (SIBs) will now have a 60-day expiration, starting on the release day of the bulletin. The intent of a SIB is to notify the service network of a major change to one or more service procedures. Do not save SIBs nor reference them for repairs, as they are uncontrolled and never updated.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories, Labels and manuals

Vehicles listed
FCCC S2G2015 to 2017
FCCC S2G2019 to 2020
FCCC XCM2015 to 2020
FCCC XCP2015 to 2019
FCCC XCR2015 to 2020
FCCC redundant S2G2018
FREIGHTLINER 108SD2015, 2016, 2017, 2018, 2019, 2020
FREIGHTLINER 114SD2015, 2016, 2017, 2018, 2019, 2020
FREIGHTLINER 122SD2015 to 2020
FREIGHTLINER BUSINESS CLASS M22015 to 2020
FREIGHTLINER CASCADIA2015, 2016, 2017, 2018, 2019, 2020
FREIGHTLINER COLUMBIA2016, 2017, 2018, 2019, 2020
FREIGHTLINER CORONADO2015, 2016, 2017, 2018, 2019, 2020
THOMAS BUILT BUSES SAF-T-LINER C22015 to 2020
WESTERN STAR 47002015, 2016, 2017, 2018, 2019, 2020
WESTERN STAR 48002015, 2016, 2017, 2018, 2019, 2020
WESTERN STAR 49002015, 2016, 2017, 2018, 2019, 2020
WESTERN STAR 57002015, 2016, 2017, 2018, 2019, 2020
WESTERN STAR 69002015, 2016, 2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
22V3380002022-05-16. EQUIPMENT:OTHER:LABELS
20V6340002020-10-14. EQUIPMENT:OTHER:LABELS; TIRES
20204082020-09-01. Engine
20V5270002020-09-01. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING
20V2110002020-04-10. EQUIPMENT:OTHER:LABELS
20201552020-04-09. Label
18V5810002018-08-30. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
20176362017-12-18. Accessories
17V8100002017-12-15. EQUIPMENT
17V4520002017-07-17. EQUIPMENT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
FleetCom_Heater Core2026-01-08. Other. Fleet Communications for Heater Core Plugging
FleetCom_SS 3163-FTL2025-12-06. Other. Fleet Communications for Power Steering Reservoir Fill Cap Venting
FleetCom_Low Coolant2025-12-05. Other. Fleet Communications for Low Coolant Sensor
CXA_10_25_Low Coolant2025-11-05. Other. CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CXA_10_25_Conmet Oil Pan2025-11-05. Other. CX Advocate for ConMet Oil Pan Insert Additional Issues
CXA 3_25_NOx2025-04-02. Other. CX Advocate for NOx conversion low faults
CXA 2_25_Turbo Oil Drain2025-03-04. Other. CX Advocate for turbo oil drain cracking
CXA 2_25_NOx2025-03-04. Other. CX Advocate for NOx conversion low faults
MYCOM_02102025-12025-03-04. Other. My Communications for Variable Speed Coolant Pump for DD13 Engines - Cascadia/57X Only
TSB01-001-DDC2025-03-04. Service bulletin. Technical Service Bulletin for GHG17 and Newer DD Platform Heavy Duty Oil Pan Drain Plug Inserts